Amlodipine And CBD Oil

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Pharmacist’s Guide to CBD Oil ABSTRACT: Cannabidiol (CBD) is becoming more prevalent, and pharmacists must be knowledgeable about these products in order to counsel patients effectively. CBD CBD, or cannabidiol, is a chemical compound just like any other substance on our beautiful planet. Just like any other compound, it has the potential to interact with other compounds, such as medications that metabolize in the same part of the body. What drugs should not be taken with CBD? We know that drugs interact inside your body with supplements if you take them at the same time. What about CBD?

Pharmacist’s Guide to CBD Oil

ABSTRACT: Cannabidiol (CBD) is becoming more prevalent, and pharmacists must be knowledgeable about these products in order to counsel patients effectively. CBD laws and regulations are determined at the state level in the United States. Non–FDA-approved CBD products are not regulated and may contain harmful chemicals. Pharmacists must counsel patients on where and how to obtain products and to check the amount of CBD and delta-9-tetrahydrocannabinol in the product. CBD has numerous drug interactions that should be evaluated by a pharmacist. CBD is most promising for treatment-resistant seizures, and more research is necessary to evaluate its use for other indications. Sativex is currently being investigated in the U.S. for treatment of spasticity associated with multiple sclerosis and schizophrenia. In general, more studies of CBD are needed.

Cannabidiol (CBD) is gaining popularity across the United States. Pharmacists must be able to answer patients’ questions about CBD and make recommendations. This article will provide specific information about CBD, including laws, how to select a non–FDA-approved CBD product, indications for use, side effects and warnings, drug interactions, dosing and directions, pharmacokinetics, and the future of CBD oil. After reading this article, pharmacists should feel confident about counseling patients about CBD and recommending CBD products.

Laws Concerning CBD

CBD was first isolated from the Cannabis sativa plant in the 1930s. CBD is a nonpsychoactive part of the plant, whereas delta-9-tetrahydrocannabinol (THC) is the major psychoactive part of the plant. In the 1970s, researchers evaluated CBD as a pharmacologic agent. 1 Epidiolex, a 100 mg/mL oral solution with less than 0.01% THC, became the first FDA-approved CBD-containing drug in June 2018. 2 The drug is Schedule V and indicated only as an anticonvulsant for Lennox-Gastaut syndrome or Dravet syndrome in patients aged 2 years and older. 3

In December 2018, the Agriculture Improvement Act, which removed hemp from Drug Enforcement Administration (DEA) regulation as a controlled substance, was passed and signed into U.S. law. Hemp is defined as a cannabis plant that contains no more than 0.3% THC. (In contrast, marijuana has a higher THC.) Hemp is now regulated by the U.S. Department of Agriculture and is legal in all 50 states. Laws and restrictions regarding the selling of hemp products vary by state, making it questionable to travel with CBD products. 2

U.S. laws and regulations concerning CBD are determined at the state level. Currently, 33 states have legalized CBD use for medical purposes, and 10 states (Alaska, California, Colorado, Maine, Massachusetts, Michigan, Nevada, Oregon, Vermont, and Washington) and the District of Columbia have legalized marijuana for recreational use. In states such as New York, Minnesota, and Connecticut, pharmacists are required to dispense the products in authorized dispensaries. Marijuana-derived CBD oil is still considered illegal under the Controlled Substances Act in accordance with the DEA’s classification of marijuana as a Schedule I substance. 2

Selecting a Non–FDA-Approved CBD Product

Pharmacists must educate patients about how to select an appropriate non–FDA-approved CBD product. These products are not tested for safety, efficacy, or quality. 4 The main concerns in picking a non–FDA-approved CBD product are that it may contain harmful chemicals and may not accurately list the correct amounts of CBD and THC it contains. These products could contain harmful contaminants (e.g., pesticides, heavy metals) or have high levels of THC, which would result in a positive urine drug test. 5 The patient should be advised to obtain CBD products from a medical dispensary because these products are regulated. The patient should also consider ordering products from states where CBD is legal because more testing is done in those states. When selecting a product, the patient should check the label to see if it lists the amount of CBD in each dose. 5,6 The manufacturer should provide a Certificate of Analysis, which shows an independent laboratory’s assessment of the product’s potency and the presence of contaminants. 5 When assessing quality, the patient should look for the Hemp Authority seal, which means that the product is legal and the manufacturer is adhering to quality standards. 7

Indications for CBD

As consumer demand in the U.S. has risen, along with the number of dispensaries, the number of studies addressing the therapeutic effects of CBD has increased. The studies performed, however, are insufficient; large randomized, placebo-controlled trials need to be conducted. CBD seems most promising for treatment-resistant seizures. There is limited evidence concerning the use of CBD for psychotic symptoms in Parkinson’s disease and for anxiety related to public speaking. CBD has not been proven effective for pain, nausea, or depression. 4 THC, conversely, is thought to be effective for these conditions because it has a different mechanism of action. THC activates the CB1 and CB2 receptors in the brain, and CBD does not. As mentioned previously, CBD does not have psychotropic effects and THC does. These differences are believed to account for the different uses of CBD and THC. 7,8

Patients with early-onset epilepsy who are resistant to conventional therapy may benefit from CBD oil. A trial that investigated the effect of CBD on drop seizures of Lennox-Gastaut syndrome found that CBD 10 mg/kg/day or 20 mg/kg/day, when added to conventional therapy, led to a greater reduction of drop seizures compared with placebo. 9 The most common adverse reactions were somnolence, decreased appetite, and diarrhea. Specific adverse events from CBD included elevated liver aminotransferase concentrations. 9

Clinical findings on the use of CBD oil in Parkinson’s disease (PD) remain unclear. Past studies have evaluated CBD’s efficacy in minimizing nonmotor symptoms of PD, such as cognitive deficits, sleep disturbances, psychosis, depression, and anxiety. 10 The neuroprotective properties of CBD have been studied in animals with PD, with results indicating that CBD appears to reduce psychotic symptoms. 11 Although patients with PD have reported fewer sleep disturbances as well as improvements in quality of life, treatment in humans requires further investigation on a larger scale, with longer durations and more standardized dosing. 12 Most studies have used combinations of CBD and THC extracts, including nabilone, a synthetic CB1 receptor agonist. CBD dosages of 150 mg/day for 4 weeks and titrated by 140 mg/week were found to be safe and well tolerated and did not worsen motor function. 10

More evidence is needed to support the use of CBD for anxiety. Studies have found that CBD 300 mg may be effective for anxiety related to public speaking, and doses of 400 mg to 600 mg may help patients with social anxiety disorder and public speaking–related anxiety. Studies are inconclusive concerning the utility of CBD for anxiety. 13

Side Effects and Warnings

Studies have reported various properties and potential benefits of CBD. Some undesired side effects of CBD use are decreased appetite, dry mouth, diarrhea, dizziness, drowsiness, fatigue, lightheadedness, orthostatic hypotension, psychomotor slowing, sedation, somnolence, weight loss, and increased risk of liver injury with dosages of 20 mg/kg/day or the use of clobazam or valproate. Monitoring of liver enzymes, weight, and cognitive function may be warranted. CBD can pass through the placenta, so it is recommended that CBD be avoided during pregnancy and while breastfeeding. Because CBD oils may contain trace amounts of THC, operating heavy machinery and driving should be avoided when treatment is initiated. 1

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Drug Interactions

CBD is metabolized in the liver, mainly by CYP2C19, CYP3A4, and UGT. This can lead to interactions with prescription drugs, OTC medications, and herbal supplements. 1,14

The inhibition of CYP2C19 by CBD can increase levels of carisoprodol, citalopram, clopidogrel, diazepam, phenytoin, proton pump inhibitors (PPIs), valproic acid, and warfarin. As a strong CYP3A4 inducer, CBD may lessen the efficacy of amlodipine, atorvastatin, buprenorphine, bupropion, diltiazem, eplerenone, fentanyl, loperamide, midazolam, paclitaxel, pioglitazone, sildenafil, solifenacin, tamsulosin, testosterone, topiramate, zolpidem, and other 3A4 substrates. 7

More serious effects may occur with concomitant use of central nervous system depressants, such as barbiturates, benzodiazepines, fentanyl, morphine, and propofol. These effects are the result of the synergistic effects of sedation and hypnotic effects at high doses. Increased sedative effects may also be seen with herbal supplements, including kava, melatonin, S-adenosylmethionine, and St. John’s wort. 13,14

Other interactions to be aware of are presented in TABLE 1.

Dosing and Directions

In unregulated dispensaries, CBD oil sold comes in a sublingual formulation known as CBD tincture and is generally available in 30-mL bottles with dropper caps. 15 A bottle costs approximately $20. The concentration of the tincture ranges from about 1,500 mg to 3,000 mg per bottle. If a drop equals 0.05 mL, one bottle contains approximately 600 drops of CBD oil. Drops are usually placed under the tongue, and the patient should let the oil absorb into the lining of the mouth, without swallowing, for 30 seconds to 1 minute. Capsules and gummies are also available. 15

Epidiolex Dosing

As noted earlier, Epidiolex (CBD) is an FDA-approved oral solution for treatment of seizures associated with Lennox-Gastaut syndrome or Dravet syndrome. The cost of Epidiolex is approximately $2,708 per month. It is supplied as 100 mL of solution containing CBD 100 mg/mL. For both indications, the initial starting dosage is 2.5 mg/kg orally twice daily for 1 week. The dosage may be titrated weekly in increments of 2.5 mg/kg twice daily to a maintenance dosage of 5 mg/kg twice daily. The maximum dosage is 10 mg/kg twice daily or 20 mg/kg/day. Gradual tapering is recommended when Epidiolex is discontinued. 3

Starting at a low dosage is recommended for elderly patients and patients with moderate or severe hepatic impairment. The dosage should be 1.25 mg/kg to 5 mg/kg twice daily or 0.5 mg/kg to 2 mg/kg twice daily, respectively. 3

Pharmacokinetics

CBD reaches its maximum concentration in 2.5 to 5 hours. High-calorie and high-fat meals can increase the maximum concentration of drug fivefold and the AUC fourfold. 14 Owing to the first-pass effect, CBD is poorly absorbed, with a bioavailability of 13% to 19%. Better bioavailability has been reported with inhaled CBD (11% to 45%). CBD is 94% protein bound; therefore, interactions may occur with other highly protein bound drugs or in patients who have abnormal albumin levels. The volume of distribution is 20,963 L to 42,849 L, meaning that the drug is largely distributed into the tissues. CBD is metabolized by the gut and primarily by the liver. Epidiolex has an active metabolite, 7-OH-CBD, and is a 2C19 and 3A4 substrate and inhibitor of 2C19, 1A2, UGT1A9, and UGT2B7. Its elimination half-life is 56 to 61 hours. CBD is excreted primarily in the feces and urine. 3

The Future of CBD

Sativex (nabiximols) is an oromucosal spray that contains CBD and THC in a 1:1 ratio. The active ingredients are absorbed sublingually or buccally. Sativex is currently under investigation in the U.S.; however, more than 25 countries worldwide have approved Sativex for the treatment of spasticity associated with multiple sclerosis. Sativex is also being researched for potential treatment of schizophrenia and other conditions. 16

The Pharmacist’s Role

Some pharmacists are hesitant to get involved with CBD. Prosecution by federal law could lead to severe consequences, including fines, imprisonment, or loss of DEA registration for pharmacies, ultimately stripping them of their ability to dispense controlled substances. If U.S. laws and regulations were more uniform across states, many of the concerns surrounding CBD would be eliminated. Until then, patients must use caution when selecting a product from an unregulated source because of the possibility of contamination and product misbranding. 17 Although more testing is needed, it is imperative for pharmacists to understand what to recommend to patients. Pharmacists should counsel patients on the risks and benefits of treatment. Patients who are are using CBD should be reminded to obtain the product from a reputable manufacturer. 17

Conclusion

Pharmacists need to keep abreast of current information on CBD in order to assist patients who are interested in using it. While most studies are inconclusive, there currently is enough information to effectively guide patients in choosing a treatment. CBD has the most evidence for treatment-resistant seizures; other indications need further study. Patients must be counseled to choose an appropriate product from a reputable source. CBD may be misbranded or contaminated with harmful chemicals. Pharmacists are uniquely positioned to assess the numerous potential drug interactions with CBD. New prescription CBD products are currently being investigated in the U.S.

What Drugs Should Not Be Taken With CBD?

CBD, or cannabidiol, is a chemical compound just like any other substance on our beautiful planet. Just like any other compound, it has the potential to interact with other compounds, such as medications that metabolize in the same part of the body. There are a whopping 98 identified drug interactions just for caffeine, some of which stop the other drug from working completely. Even grapefruit can’t be eaten if you’re on certain prescription medications – which means it’s no surprise that CBD and some drugs just shouldn’t mix.

Fortunately, unlike caffeine and grapefruit, most of the potential interactions with CBD and other drugs have been identified as harmless or mild. In some cases, other drugs and CBD can work in combination with each other favorably instead of having adverse side effects. We always recommend speaking with a certified health professional or physician prior to taking CBD oil or adding it into your daily routine, especially if you are currently on or plan on taking prescription medications. Today, though, we’re going to cover some of the drugs that have been shown to interact with CBD in some way to look at which drugs should not be taken with CBD.

How CBD Might Interact with Other Drugs

We see a range of ways for how CBD interacts with other drugs, medications, and chemical compounds. Cannabidiol may potentially reduce the metabolism of other drugs that compete for the same enzyme as it does. Metabolized by the cytochrome enzymes CYP2C19 and CYP3A4 in the body, this can raise the blood levels of other medications that metabolize the same way, which would require your doctor to do a downward adjustment on your doses. It can inhibit CYP2D6, the enzyme targeted by risperidone and omeprazole medications. Likewise, it could reduce the metabolization of diclofenac and warfarin by inhibiting the hepatic enzyme, CYP2C9.

It was found to increase the bioavailability of Hexobarbital, a barbiturate derivative with sedative and hypnotic effects that’s often sold in both sodium salt and acid forms like Tobinal, Evipan, and Citopan. While cannabis may increase the potency or effectiveness of other drugs, close monitoring by your physician or a medical professional is important. Your dosage may need to be adjusted even if the drug interact is beneficial, so make sure you’re staying honest with your doctor if you’re interested in using CBD.

The CYP450 Enzyme

CBD interacts with more than one cytochrome enzyme, including one located primarily in the liver and brain that’s involved in helping the body process about 60% of the pharmaceuticals on the market right now.

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In short, cannabidiol has the potential to interact with a lot of medications just from this enzyme alone.

In fact, here are some of the drugs that have been shown to use the CYP450 enzyme system in our bodies:

· Oral hypoglycemic agents

· Calcium channel blockers

By interacting or saturating this enzyme system, CBD could potentially prevent other drugs from accessing the same enzyme. This causes those medications to build up in the bloodstream instead, which simply makes the drug more potent. However, it could also prevent medication from having a timely effect or releasing into the bloodstream when it’s expected to. On the bright side, just using CBD oil or another CBD product doesn’t mean that your CYP450 enzyme system is affected. Those results came from observing consistently high doses of CBD.

The lower dosages that come in a CBD oil tincture bottle will likely not cause the same extreme effects. We still need more research before we can find the exact dose of CBD required to make any significant difference for a drug interaction. As a rule of thumb, it’s safe to assume that the risk of drug interaction increases the more CBD you take in a daily sitting.

Serum Concentration Increase

CBD may cause an increase the amount of medication in your blood, otherwise known as serum concentrations, according to the District of Columbia’s Department of Health. Just like grapefruit, this means it may interact with beta blockers, calcium channel blockers, antiretrovirals, antihistamines, and antidepressants. Allergy pills, blood pressure medication, and even cholesterol drugs may absorb differently due to CBD blocking the liver enzyme it’s trying to metabolize through.

Again, this is only found in very high doses of CBD, some of which are stronger than an entire standard bottle of a CBD oil tincture. Low amounts of CBD such as standard serving sizes throughout the day don’t appear to affect how your body is processing other medicine (though a doctor’s second opinion is always recommended).

Timing Might be Everything

While you need to discuss with your physician the schedule for taking your drugs, some research suggests that the timing of when you take other medications and CBD might play a huge role in CBD’s interaction with those drugs. The goal is to reduce the workload of the liver. Medication that metabolizes in the liver enzymes are already causing the liver to perform its bodily function. However, all drugs have a half-life, and it doesn’t stay in your liver once it has been metabolized. You just have to wait long enough for the enzymes in your liver to regain a sufficient level of their function before using CBD oil. Drug interactions between CBD and other liver enzyme metabolizing medications may diminish after waiting a couple hours between taking your prescription medication and taking the cannabidiol. Your chances of a drug interaction could be lower by trying CBD throughout different times of the day.

Everyone processes CBD and other drugs differently, so you may experience different interactions than others or have little to no reaction even when you take medication in combination with cannabidiol. Heavily influenced by our body size, age, genetics, and sensitivity to chemical compounds, the effect medication will have and how our bodies will process it can vary greatly. This is just one of the reasons you want to speak with a certified health professional if you’re taking other medication to make sure it doesn’t interfere with a daily serving or more of cannabidiol.

The CBD Product You Choose Matters

There are a tremendous variety of CBD products available now – from CBD oil tinctures, to soft chews, to topicals, we see new products released every day for the industry. The way you decide to use CBD will contribute greatly to how it interacts with any medication you’re on. How much cannabidiol gets into the bloodstream varies from method to method.

For example, applying a topical CBD cream to a target area on the body, or maybe over a muscle spasm, means that the cannabidiol is only interacting with the CB receptors on the skin. The amount of CBD absorbed into the bloodstream topically is likely negligible, making it one of the safest options if you want to use CBD but don’t want it to interact with a more important prescription medication you’re taking. You can also ingest the cannabidiol directly through a CBD oil tincture, soft chew, or other edible product.

This reduces how much and how fast the CBD hits the bloodstream, taking the long route through the gastrointestinal system before heading to the liver to reach those important liver enzymes we keep talking about. Using this method to consume your CBD, you still lessen some of the CBD that’s absorbed into the enzymes in the liver. CBD oil sublingually is the second-best way to get the most effective dose possible. Swishing it around in your mouth, through your teeth, and substantially under your tongue will allow it to hit the highest surface count of capillaries. This is a direct route to your bloodstream, so you can expect the effects to hit the fastest and most effectively, lasting around the same amount of time as an edible might. While this is one of the best ways to get the most out of a CBD oil bottle, it also runs the chance of causing the CBD to interact most severely with any other medication.

The most direct route, an IV is the only way to get the CBD anymore directly into your bloodstream. However, you can also vape or smoke the product; some CBD oil formulas can even be used for both vaping and sublingual doses.

Be Smart

Don’t mix substances without receiving medical advice from a doctor first. We love seeing how many people have found the effectiveness of CBD daily, but your health is the most important factor. We use CBD to promote general wellness, so we want to be upfront about anything that substance might interact with.

Whether you’re taking your prescribed medications or you’re new to cannabidiol, speak with a certified health professional before you take your first serving. Alternatively, you can also check out our lab reports to feel more confident about the lack of contaminants and pollutants and accuracy of the cannabinoid content level we report. You can also check out the FAQ section for any other CBD related answers you are looking for.

In the meantime, we hope this answers any questions you had about how cannabidiol metabolizes in the body, how CBD interacts with other medications or prescription drugs, and, ultimately, which drugs should not be taken with CBD.

What Drugs Should not be Taken With CBD?

Do you know what drugs should not be taken with CBD?

We have known for some time now that medications can interact inside your body with supplements if you take them at the same time. Every single time you go into the doctor’s office, they ask you what medications you are taking for a reason.

They aren’t just being nosey, the doctor actually needs to know if a medication they prescribe you will have a negative interaction with that medication you are already taking. That’s why it is important to always be very clear with your doctor about everything you take! Even over-the-counter medications and supplements can produce unpredictable, harmful effects when mixed with the wrong drug in your system.

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CBD is still fairly new to the world, and what drugs should not be taken with CBD is still being discovered.

CBD is short for cannabidiol , one of over 100 chemicals known as cannabinoids found in cannabis plants. It is found in all cannabis plants, including industrial hemp and the two strains of marijuana, cannabis sativa and cannabis indica. Depending on the strain, people can consume a significant amount of CBD when they consume cannabis. In most strains, you’ll find more THC than CBD, which is known for its psychoactive properties that cause the cannabis “high”.

Unlike THC, CBD is not a psychoactive substance, it creates no “high.”

With CBD being such a popular thing, we can expect more research professionals to conduct more studies that will provide new data. It will likely take years for the studies to be completed and papers to be published, to set expectations, so time will be needed to fully understand the data on what drugs should not be taken with CBD. Until then, experiments with CBD will always be conducted at the user’s own risk.

Generally speaking, mixing CBD with any other medication that depends on CYP450 enzymes, inhibits the production of CYP450, or induces the production of CYP450 enzymes, and is asking for trouble. Medical science can’t quite tell us exactly what kind of trouble and how much of it, but do you really want to find out?

Since more than half of all medications depend on CYP450 enzymes to be metabolized, check carefully which of your prescribed and over-the-counter medications fit this criterion and look for delayed or suppressed effectiveness, as well as extended side effects and possible signs of drug toxicity.

There is one class of drugs that you should also keep an eye on and they are called prodrugs. In order for these drugs to become active and therapeutic compounds, they need to be metabolized. The version of the drug you ingest is actually inert and depends on the biochemical reaction with CYP3A4 to become active at all. If CBD suppresses your CYP3A4 levels, a prodrug might not even work at all.

Examples of prodrugs include codeine, which gets synthesized into morphine in the liver. ADHD drugs Concerta and Vyvanse are two others.

How CBD May Interact with The Most Commonly Prescribed Prescription Drugs

Vicodin and CBD

When it comes to pain killers, Vicodin is the most commonly-prescribed. It is a habit forming opioid that can produce bad side effects including dizziness, nausea, impaired breathing, and cognitive impairment.

Opioids are not known to interact adversely with CBD. The exception is codeine, a prodrug that only activates as a painkiller when it is metabolized, a process that CBD can inhibit. Vicodin does not share this property with codeine.

Simvastatin and CBD

In a drug class known as “statins”, Simvastatin is the first type of drug prescribed to persons suffering from high cholesterol. It happens to be the most frequently prescribed statin.

Simvastatin is metabolized by CYP3A4. If you end up taking CBD in conjunction with simvastatin it’s possible that it can decrease the drugs efficacy. It can prolong the drugs side effects, and possibly lead to medication toxicity due to the drug’s prolonged presence in the bloodstream.

Lisinopril and CBD

When people are close to kidney failure, and are suffering from high blood pressure, they are usually prescribed Linisopril. Sometimes it can be prescribed for people suffering from diabetes and congestive heart failure.

Lisinopril is classified as angiotensin converting enzyme (ACE) inhibitor. While its function is to inhibit the production of enzymes, it is not known to inhibit CYP3A4, meaning it is unlikely to inhibit the function of CBD. It is also not a prodrug, unlike some of its analogs, meaning it is less likely to be affected by an inhibition of CYP3A4 that may result from ingestion of CBD.

Levothyroxine and CBD

Lovothyroxine is the generic form of the thyroid medication Synthroid. It is a synthetic thyroid hormone used to treat hypothyroidism (an underactive thyroid). An excess of this hormone can produce chest pain, rapid heart rate, headache, sweating, anxiety, and weight loss.

Lovothyroxine is known to inhibit CYP450 enzymes, meaning it could inhibit the effects of CBD oil.

Azithromycin and CBD

The antibiotic azithromycin is usually prescribed to treat throat, sinus, and ear infections. It can also be prescribed to treat bronchitis, pneumonia, and certain bacterial sexually transmitted infections. It may produce the side effects of vomiting, gas, bloating, and diarrhea.

Unlike its relative erythromycin, azithromycin only metabolizes weakly with CYP450 enzymes and is not known to either stimulate or inhibit the production of CYP450 enzymes. There is little or no indication that azithromycin will interact adversely with CBD.

Metformin and CBD

Metformin is a drug that is used to treat type 2 diabetes. It’s the generic version of a drug called Glucophage. Common side effects include gas, nausea, bloating, reduced appetite, and diarrhea.

Metformin is not metabolized in the way most other drugs are, meaning changes in CYP3A4 due to CBD ingestion will most likely not affect it. However, metformin is known to be a strong CYP3A4 inhibitor in its own right, meaning it could inhibit the effectiveness of CBD metabolism.

Lipitor and CBD

Another statin drug is Lipitor. Lipitor is commonly prescribed to patients suffering from high cholesterol. It is also prescribed to patients suffering from coronary artery diseases as a safeguard against stroke, heart attack, and chest pain. It may also cause diarrhea, constipation, muscle pain, fatigue, gas, heartburn, and headaches.

Lipitor is metabolized by CYP3A4. Taking CBD in conjunction with Lipitor may decrease the drug’s effectiveness, prolong its side effects, and possibly lead to medication toxicity due to the drug’s prolonged presence in the bloodstream just like Simvastatin.

Amlodipine and CBD

Amlodipine is the generic form of the drug called Norvasc. These drugs are both calcium channel blockers. It is prescribed to prevent chest pain and treat high blood pressure. Side effects it can cause include headaches, dizziness, chest pain, and swollen extremities.

Amlodipine is metabolized by CYP3A4. Taking CBD in conjunction with Amlodipine may decrease the drug’s effectiveness, prolong its side effects, and possibly lead to medication toxicity due to the drug’s prolonged presence in the bloodstream.

Amoxicillin and CBD

Amoxicillin , a relative of the revolutionary antibiotic penicillin, is used to treat many kinds of bacterial infections, including skin, throat, ear, tonsil, and urinary tract infections. Possible side effects include heartburn, nausea, rash, diarrhea, itching, and abdominal pain. Some people are also allergic to amoxicillin.

Studies have not demonstrated the propensity for amoxicillin to inhibit the production of CYP3A4, meaning it is unlikely to produce an adverse reaction with CBD.

Hydrochlorothiazide and CBD

One of the most common diuretics on the market is Hydrochlorothiazide. It is prescribed to patients suffering from high blood pressure. It is known to produce side effects like electrolyte imbalance, rash, fatigue, light sensitivity, and low blood pressure.

Hydrochlorothiazide is not metabolized by CYP3A4, nor is it known to inhibit or stimulate the production of the enzyme. This means it is not likely to produce an adverse reaction with CBD.

Hopefully we’ve helped you get a better understanding on what drugs should not be taken with CBD. It’s important to understand drug interactions with CBD and what the potential risks are. Consult with your physician if you have any doubt.

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