harvesting marijuana

Can I Take Viagra with Cannabis?

Highlights

  • There is some evidence that taking Viagra with cannabis may cause a drug interaction, but more studies are needed for a definitive answer.
  • Cannabis and CBD are very different things and may have different impacts on erectile function.
  • It’s best not to combine weed and Viagra without talking to a doctor about it and staying on top of the research.

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Dr. Michael DiLeo
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Viagra is a common medication, and marijuana is increasingly available across the United States. For some men, this raises the question: “Can I take Viagra with cannabis?” The short answer is, “Maybe,” but it’s going to depend on the type of cannabis and your medical circumstances.

Here’s what to know about combining cannabis and Viagra, and the possible medical effects of using marijuana and Viagra at the same time.

Erectile Dysfunction and Viagra

Viagra is one of the most common medications prescribed for ED. It works by increasing blood flow to the penis, improving a man’s ability to achieve or maintain an erection for sexual intercourse.

Viagra, as well as other prescription ED medications, can be effective if ED is caused by a physiological condition, such as high blood pressure, diabetes, obesity, or high cholesterol.

However, ED can also be caused by mental health issues like depression, anxiety, or stress, or by lifestyle factors like smoking or poor sleep habits. It can also be caused or exacerbated by certain medications. ED medications may or may not work as well for ED caused by psychological or underlying medical conditions.

Before starting Viagra for erectile dysfunction, consult a doctor to determine if ED medication is the appropriate course of treatment for you.

Marijuana and Viagra: Is It Legal?

marihuana plants indoors

First things first: While prescription medication like Viagra and sildenafil is legal in all 50 states, cannabis is a different story. Technically speaking, on the federal level, marijuana is a Schedule I controlled substance, which means the federal government has concluded there is no federally approved medical use for it. This is in the process of changing, but when and how is currently unclear.

State legislation is a different matter, however. In 24 states as of this writing, marijuana is legal for recreational use, and in another 14, it can be used for medical reasons. We recommend checking your state laws very carefully if you’re not sure whether it’s legal in your state.

Cannabidiol (CBD) is even more complicated. CBD derived from marijuana is illegal at the federal level due to the possible presence of tetrahydrocannabinol (THC), the chemical that gets you high. But CBD derived from hemp, cannabis bred for industrial use to have a low THC content, is completely legal. The CBD oil and CBD gummies you might come across are almost certainly derived from hemp.

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Cannabis and Viagra: Is It Safe?

While there’s yet to be any conclusive evidence that mixing Viagra and marijuana is unsafe, it is probably best to consider these factors before doing so.

The most basic problem is that cannabis’ federal classification has essentially prevented any high-quality medical research. While cannabis has been widely used for decades, with the CDC reporting 18% of Americans using it in 2019 alone, most research currently available is anecdotal, based on self-report surveys and case studies.

For example, one case study reported on a patient who had a heart attack after taking Viagra and weed together. The theory, assuming the two events were related, was that the marijuana acted on the liver enzymes that normally break down medication like Viagra, so that it was in the patient’s system for much longer, which is a fairly common drug interaction with Viagra.

When THC was administered to lab animals in a 2022 study, the animals exhibited reduced functioning or health of their reproductive organs, including smaller prostates and seminal vesicles, and changes in testicular functioning, which researchers attributed to a THC-caused drop in testosterone.

However, the relationship between ED and testosterone is much more complex than a simple one-to-one ratio, so this may only be a factor with ED caused by hormone imbalances. This could also be a dose-response question, as casual use may not cause these problems, while aggressive, regular use might.

older man harvesting marijuana

Another issue is that edibles, vapes, and other methods of consuming cannabis are widely available, which changes the nature of the research. Whereas a plant can vary widely in how much of any substance it contains, processed products tend to offer a consistent dose and the ability to choose how strong that dose is. 

It’s also not clear how consuming cannabis versus inhaling it might affect the research. There’s even been some discussion in the medical and academic communities that marijuana may actually cause ED, with those claims supported by at least one recent systematic review of the literature, but those claims are viewed as inconclusive without further study. 

Does this caveat apply to CBD, as well? That’s also unclear, especially since the body naturally manufactures CBD-like chemicals in the endocannabinoid system, which was first discovered in the 1990s. The interaction between plant cannabinoids and human cannabinoids is another frontier of research we need to explore.

Bottom Line: Can You Take Viagra With Cannabis?

dried marijuana in jars

As mentioned above, the research on the effects of mixing Viagra and marijuana are inconclusive, but there is enough anecdotal research to give men pause before indulging. 

If you’re considering cannabis or CBD and are currently taking Viagra, take the following steps.

  • Talk to your doctor about your ED and your personal medical situation. Ask about possible impacts and drug interactions, especially related to liver enzymes.
  • Remember medical and recreational use are very different. Using cannabis to treat chronic conditions involves taking it regularly and possibly at higher doses, raising the risk of interactions. If you’re only using it recreationally, consider spacing out when and avoiding taking it too close to your last dose of Viagra
  • Stay on top of the research. As we noted, this is a quickly expanding field and we learn more about cannabinoids and other drugs every day. Your doctor may be able to point you towards opinion-neutral sources that will give you the facts.

Staying informed about the research and recommended best practices is key. Depending on how you use cannabis, and what your doctor advises, you may need to decide whether to keep taking it and discontinue some prescription medication, or stop using cannabis altogether.

Get Tested Prescription Medication to Treat ED

Prescription medication has been tested by the FDA and undergone rigorous clinical trials. Furthermore, it continues to be monitored by the FDA after it goes to market, so any safety concerns are clearly noted. 

If you’re looking for the straight facts on ED medication, eDrugstore offers detailed information about each medication on the market, both brand-name and generic, and even provides a free medical consultation with a U.S.-licensed physician to discuss whether ED medication is right for you. To learn more, visit our erectile dysfunction page.

Disclaimer: This article provides general information about health and related topics but is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

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