Viagra Professional and cannabis (marijuana, THC)
As cannabis becomes legal or decriminalised in more jurisdictions, the practical question of combining it with prescription medication comes up regularly. Viagra Professional (Sildenafil Citrate) and cannabis share several pharmacological pathways, and the combination at 100mg is not automatically benign even where both are legal.
How cannabis affects Viagra Professional
THC and other cannabinoids are metabolised partly by hepatic CYP enzymes, including CYP3A4 — the same pathway used by many Erectile Dysfunction (ED) medications. Frequent cannabis use can shift the metabolism of Sildenafil Citrate mildly. THC also has cardiovascular effects (increased heart rate, blood pressure changes) and central nervous system effects that can stack with Viagra Professional's side-effect profile.
Practical guidance
Occasional moderate cannabis use is unlikely to cause clinically meaningful problems for most adults on Viagra Professional at 100mg. Heavy daily use, edibles with high THC content, or cannabis combined with alcohol substantially raise the risk of dizziness, hypotension, impaired judgement and amplified side effects from Sildenafil Citrate. According to the prescribing information, the full list of recreational substances should be disclosed to the prescriber.
Frequently asked questions
Can I use cannabis while taking Viagra Professional? ▾
For most adults at 100mg, occasional moderate cannabis is tolerated, but heavy daily use is not advised because of metabolic and additive cardiovascular effects with Sildenafil Citrate. The safe practice is to mention it to the prescriber.
Does CBD interact with Viagra Professional? ▾
CBD inhibits several CYP enzymes including CYP3A4, which can raise plasma levels of medications that go through that pathway. For Viagra Professional specifically, this depends on whether Sildenafil Citrate uses CYP3A4. Daily high-dose CBD products warrant a pharmacist check.
More on Viagra Professional
- With alcoholViagra Professional and alcohol — is it safe to drink?
- With foodShould Viagra Professional be taken with food?
- Side effectsViagra Professional side effects: common, rare and warning signs
- Dosage guideViagra Professional dosage guide: how much to take and when
- OnsetHow fast does Viagra Professional start working?
- DurationHow long does Viagra Professional last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.