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Important Safety Information
Sildenafil (Generic Viagra)
Prescription MedicationSildenafil citrate is the FDA-approved generic equivalent of Viagra. It contains the same active ingredient at the same dosage strengths (25mg, 50mg, 100mg) and delivers the same clinical effect. Generic sildenafil is indicated for the treatment of erectile dysfunction in adult men and requires a valid prescription from a licensed healthcare provider.
Emergency: If you experience chest pain, severe shortness of breath, a prolonged painful erection (over 4 hours), or sudden vision/hearing loss — call 911 or go to your nearest emergency room immediately.
Who Should Not Use Sildenafil (Generic Viagra)
- Women or children
- Men currently taking nitrate medications in any form
- Men taking riociguat or other soluble guanylate cyclase stimulators
- Individuals with a known hypersensitivity to sildenafil
- Men with severely impaired hepatic function (certain doses)
- Men for whom sexual activity is medically contraindicated
Warnings & Precautions
Nitrate Contraindication
The combination of sildenafil and nitrates (prescribed or recreational, including poppers) is strictly contraindicated due to the risk of severe, life-threatening hypotension.
Cardiovascular Evaluation
Men with known cardiovascular disease, recent stroke, or uncontrolled hypertension should be evaluated by a cardiologist before initiating treatment.
Priapism
Seek emergency care immediately for an erection lasting over 4 hours. Prolonged erections can cause permanent erectile tissue damage.
Vision & Hearing
Rare cases of sudden visual or hearing impairment have been reported with PDE5 inhibitors. Discontinue and seek immediate care if this occurs.
Generic Bioequivalence
Generic sildenafil is bioequivalent to branded Viagra. It undergoes FDA review to confirm equivalent safety and efficacy profiles.
Common Side Effects
This is not a complete list. Contact your provider if you experience any concerning symptoms.
- Headache (most common)
- Facial flushing
- Nasal congestion
- Indigestion
- Visual disturbances (blue tinge, increased light sensitivity)
- Dizziness or lightheadedness
Drug Interactions
Always inform your provider of all medications, supplements, and substances you are currently taking.
- Nitrates — strictly contraindicated
- Riociguat — contraindicated
- Strong CYP3A4 inhibitors (ketoconazole, ritonavir) — increase sildenafil plasma levels
- Alpha-blockers — may cause additive blood pressure lowering; use with caution
- Alcohol — may potentiate hypotensive effects
When to Contact Your Provider
- An erection persists for more than 4 hours
- Sudden vision or hearing loss occurs
- You experience chest pain or severe dizziness during or after use
- You have questions about drug interactions with your current medications
- You are unsure about the correct starting dose for your health profile
This safety information is provided for general educational purposes only and does not constitute medical advice. It is not a substitute for the full prescribing information, package insert, or guidance from your licensed healthcare provider. Individual responses to medications and supplements vary. MEDVera providers review your complete health profile before recommending or prescribing any treatment.