Levitra pill wikipedia?

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Levitra (vardenafil) – Overview

Feature	Details
Brand name	Levitra (also sold as Staxyn, as a chewable tablet in some countries)
Active ingredient	Vardenafil hydrochloride
Class	Phosphodiesterase‑5 (PDE‑5) inhibitor
Indication	Treatment of erectile dysfunction (ED) in men
Typical adult dose	10 mg taken orally 30–60 min before sexual activity; may be increased to 20 mg or decreased to 5 mg depending on efficacy and tolerability.
Mechanism	Inhibits PDE‑5 in penile tissue, prolonging the action of cyclic GMP and allowing smooth‑muscle relaxation for increased blood flow.
Common side‑effects	Headache, facial flushing, nasal congestion, dyspepsia, back pain, visual changes (blue‑tinted vision, blurred vision). Rarely, priapism, allergic reactions, or chest pain.
Contraindications	Use with nitrates (nitroglycerin, isosorbide dinitrate, isosorbide mononitrate) or alpha‑blockers for angina; severe hepatic or renal impairment; known hypersensitivity.
Drug interactions	• Strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole) → ↑ vardenafil levels. • CYP3A4 inducers (e.g., rifampin) → ↓ efficacy. • Alcohol and grapefruit juice may increase adverse effects.
Pregnancy & lactation	Not recommended; insufficient data on safety.
Availability	OTC in some regions; prescription in most countries. Generic vardenafil available in many markets.
History	Approved by the U.S. FDA in 2003 after clinical trials demonstrating safety and effectiveness comparable to sildenafil (Viagra) and tadalafil (Cialis).

Quick FAQ

Question	Answer
Is Levitra safer than other ED drugs?	Safety profiles are similar; the choice often depends on onset time, duration, and patient tolerance.
Can I take it with alcohol?	Alcohol may increase side‑effects (headache, dizziness). Use cautiously.
How long does it last?	Effects can last up to 4–5 hours; however, sexual stimulation is required to achieve an erection.
What if I miss a dose?	Skip the missed dose and take the next scheduled dose; do not double‑dose.
Can it be used with other sexual aids?	Some men combine PDE‑5 inhibitors with other therapies (e.g., vacuum devices), but consult a doctor.

Bottom Line

Levitra (vardenafil) is a well‑established, orally administered medication that helps men with erectile dysfunction achieve and maintain an erection sufficient for sexual activity. It works by blocking PDE‑5, allowing smooth‑muscle relaxation in penile tissue. While generally safe, it has notable drug interactions—especially with nitrates—and may cause common side‑effects such as headache and flushing. If you’re considering Levitra, discuss with a healthcare provider to confirm it’s appropriate for your medical history and current medications.

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Levitra pill wikipedia?

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