Vardenafil drug interactions: a practical overview
Drug interactions are the single biggest cause of preventable medication problems. Vardenafil (Vardenafil) interacts to varying degrees with several classes of medication and with a smaller list of foods. This page summarises the practically important ones at 5mg, 10mg, 20mg, framed for a real-world prescription review rather than an exhaustive PDF list.
High-priority interactions for Vardenafil
For Vardenafil, the most clinically relevant interactions are typically with strong CYP3A4 inhibitors and inducers, with cardiovascular medications (notably nitrates for several Erectile Dysfunction (ED) agents), with central nervous system depressants, and with medications affecting blood pressure or heart rate. The mechanism is identical to original Levitra: vardenafil selectively inhibits PDE5 in penile smooth muscle, allowing cyclic GMP produced during sexual arousal to accumulate.
Working with the pharmacist
A pharmacist review of all current medications is the practical safeguard against unintended interactions with Vardenafil. According to the prescribing information for Vardenafil, the full medication list — prescription, OTC, supplements and recreational substances — should be reviewed before starting and at every dose change at 5mg, 10mg, 20mg.
Frequently asked questions
What's the most important Vardenafil interaction to know? ▾
For most Erectile Dysfunction (ED) medications, the highest-priority interaction is with nitrate medications used for chest pain — this combination is often a hard contraindication. After that, strong CYP3A4 inhibitors (some antifungals, macrolides) are the next concern at routine 5mg, 10mg, 20mg doses.
Do I need to tell the pharmacist about supplements? ▾
Yes. Supplements and herbal products can interact with Vardenafil in ways that prescription drug-drug interaction databases miss. The pharmacist needs the complete picture — including supplements like St John's Wort, grapefruit-containing products and high-dose vitamins — to flag risks at 5mg, 10mg, 20mg.
More on Vardenafil
- With alcoholVardenafil and alcohol — is it safe to drink?
- With foodShould Vardenafil be taken with food?
- Side effectsVardenafil side effects: common, rare and warning signs
- Dosage guideVardenafil dosage guide: how much to take and when
- OnsetHow fast does Vardenafil start working?
- DurationHow long does Vardenafil last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.