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See the DrugPatentWatch profile for levitra

Generic name: Vardenafil

Levitra® is the brand name; the active ingredient is vardenafil, which is the generic formulation.


What is Vardenafil?

Vardenafil is a phosphodiesterase‑5 (PDE‑5) inhibitor that enhances blood flow to the penis to help a man achieve and maintain an erection when sexually stimulated. It’s used to treat erectile dysfunction (ED).


How is it taken?

Form Typical adult dose When to take
Tablets (5 mg, 10 mg, 20 mg) • 5 mg 30–60 min before sex (if you plan to be active 30–240 min)
• 10 mg if 5 mg is insufficient
• 20 mg only if 10 mg is not effective (not routinely recommended for most patients)
Only when needed. Do not take more than once in 24 h.
Note Do not combine with nitrates (nitroglycerin, isosorbide dinitrate/mononitrate) or α‑blockers (e.g., doxazosin) unless your doctor specifically allows it.

Key points for patients

  1. Timing matters – take it 30–60 min before planned sexual activity. It can be taken with or without food, though food may delay onset slightly.
  2. Do not exceed 20 mg per day – higher doses do not improve efficacy and increase side‑effects.
  3. Side‑effects – most common: headache, facial flushing, nasal congestion, dyspepsia, back pain, dizziness, visual changes (blue‑tinted vision, blurred vision). Severe reactions (e.g., priapism >4 h, sudden vision loss) require immediate medical attention.
  4. Drug interactions – check all medications (especially nitrates, certain antihypertensives, ketoconazole, clarithromycin, ritonavir, fluconazole, and grapefruit juice) that can elevate vardenafil levels.
  5. Alcohol – use in moderation; heavy drinking can blunt its effect.
  6. Contraindications – not for men taking nitrates for heart disease, nor for those with severe liver or kidney impairment without consulting a doctor.

When to talk to a doctor

  • Persistent ED despite lifestyle changes (exercise, diet, smoking cessation)
  • Uncertain dosage or side‑effects
  • Chronic health conditions that may interact with PDE‑5 inhibitors
  • If you’re on medications that could interact
  • For guidance on dosing frequency and monitoring

Quick Reference: Vardenafil (Generic Levitra) – Dosage & Tolerability

Dose Typical Success Rate Common Side‑Effects Contraindications
5 mg 80–85 % Headache (20 %), flushing (15 %), nasal congestion (10 %) Nitrates, severe cardiovascular disease
10 mg 85–90 % As above, plus mild dizziness (5–10 %) Same as above
20 mg < 95 % Higher frequency of visual changes (5‑10 %) Not routinely recommended; same contraindications

Bottom line

  • Generic Levitra = Vardenafil.
  • Take as needed, 30‑60 min before sex, and stay within the prescribed dose (max 20 mg/24 h).
  • Discuss with your healthcare provider any other medications or health conditions to avoid serious interactions.

If you have any specific questions (e.g., dosing for a particular condition, what to do if you miss a dose, how to handle side‑effects), feel free to ask!



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