What this site is
GenPharm XL publishes academic material about PDE5 inhibitors and erectile dysfunction pharmacology. That's it. We're not a clinic. We're not a pharmacy. We don't take appointments.
Everything here is for learning and research. If you're looking for personal medical advice, you need a licensed clinician who knows your history — not a website.
1. Not medical advice
We describe drug mechanisms, trial results, half-lives, interactions, and side effects because those facts matter in pharmacology education. None of that substitutes for a doctor or pharmacist telling you what to do with your prescriptions.
Don't start, stop, or change medication based on what you read here. Don't use this content to self-diagnose. If a paragraph conflicts with your prescribing information or your physician's instructions, trust the label and your clinician.
2. No doctor–patient relationship
Reading these pages doesn't make you our patient. We don't review individual cases. We don't answer "should I take 50 mg or 100 mg" emails as clinical guidance.
Bring specific questions to someone licensed in your jurisdiction who can examine you and review your medication list.
3. We don't sell drugs
There are no purchase links. No affiliate codes. No vendor referrals. We don't get paid by Pfizer, Bayer, Lilly, Ajanta, Centurion, or anyone else mentioned.
When we write Viagra®, Cialis®, Levitra®, Kamagra®, or Cenforce®, we're naming molecules and products for scientific clarity. That's not an endorsement. It's labeling convention in pharmacology writing.
Prescription drugs require a valid prescription in the US and most countries. Buying PDE5 inhibitors without one is illegal in many places and risky everywhere — especially from unverified online sellers.
4. Accuracy and updates
We pull from FDA labels, primary trials, and standard references. We try to keep pages current. Pharmacology moves — new safety letters, label changes, retracted analyses. A page written in 2026 might miss something published next month.
Verify critical facts against current FDA prescribing information before you cite them in clinical work or coursework.
5. Who should use this site
Students, educators, researchers, journalists, and curious adults who understand the limits above. The content is dense on purpose. It's not written as patient handout copy.
If you want simple "how do I use this pill" instructions, official patient leaflets and your prescriber are the right sources.
6. Emergencies
Chest pain, trouble breathing, fainting, an erection over four hours, sudden vision or hearing loss — call emergency services. Don't finish reading a monograph first. US users: 911.
7. Drug interactions
We highlight the nitrate + PDE5 contraindication because it's absolute and predictable from mechanism. Our interaction lists are not complete. Your pharmacy's interaction checker and your clinician see the full picture — renal function, hepatic function, every concurrent drug.
8. Liability
We provide this material as-is. To the extent law allows, GenPharm XL Institute for Pharmaceutical Sciences and its contributors aren't liable for decisions you make after reading it. By continuing, you accept that.
9. Copyright and trademarks
Original text and layout belong to GenPharm XL Institute for Pharmaceutical Sciences. Facts from FDA documents and published science aren't ours to restrict. Brand names belong to their registrants; we use them descriptively without claiming affiliation.
10. Jurisdiction
We write from a US regulatory frame — FDA approvals, US prescribing norms. Rules elsewhere differ. If you access the site from outside the US, local law applies to you.
Last updated: June 2026 · Version 1.0
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