Description

Viagra 100 mg (Sildenafil Citrate)

Overview

Viagra 100 mg (Sildenafil Citrate) is a prescription medication used for the treatment of erectile dysfunction (ED) — the inability to achieve or maintain an erection sufficient for satisfactory sexual performance.

It belongs to a class of medications known as phosphodiesterase type 5 (PDE5) inhibitors. Viagra helps increase blood flow to the penis when a man is sexually stimulated, improving erectile function.

Viagra does not cure erectile dysfunction or increase sexual desire; it supports a natural erectile response to sexual stimulation.

Key Details

• Generic Name: Sildenafil Citrate

• Brand Name: Viagra

• Strength: 100 mg tablet

• Dosage Form: Oral tablet

• Drug Class: PDE5 Inhibitor

• Manufacturer: (Varies by region)

• Prescription Required: ✅ Yes

How It Works

Viagra blocks the enzyme phosphodiesterase type 5 (PDE5), which breaks down a substance called cGMP.
By preventing the breakdown of cGMP, Viagra helps relax smooth muscles and increase blood flow to the penile tissues during sexual stimulation — allowing a stronger and longer-lasting erection.

It only works in the presence of sexual arousal; it does not produce automatic erections.

Usage Guidelines

• Take exactly as prescribed by your healthcare provider.

• The usual recommended dose is 50 mg, which may be adjusted up to 100 mg or down to 25 mg, depending on response and tolerance.

• Take approximately 30 to 60 minutes before sexual activity.

• Effect duration: up to 4 hours (varies per individual).

• Do not take more than one dose in 24 hours.

• Avoid heavy or high-fat meals before taking Viagra, as they may delay absorption and reduce effectiveness.

Safety Information & Precautions

• Do not use Viagra if you are taking nitrates (such as nitroglycerin) or nitric oxide donors, as this combination can cause a dangerous drop in blood pressure.

• Inform your doctor if you have heart disease, high or low blood pressure, liver/kidney problems, vision disorders, or a history of stroke.

• Avoid drinking excessive alcohol, as it can impair your ability to achieve an erection.

• Do not use in combination with other erectile dysfunction medications unless directed by your physician.

• Use cautiously if you are elderly or taking alpha-blockers for blood pressure or prostate issues.

Possible Side Effects

Common side effects:

• Headache

• Flushing (warmth or redness in the face, neck, or chest)

• Indigestion or upset stomach

• Dizziness or lightheadedness

• Nasal congestion

• Vision changes (mild color tint or blurred vision)

Serious side effects (seek immediate medical attention):

• Erection lasting longer than 4 hours (priapism)

• Sudden vision loss or hearing loss

• Chest pain, irregular heartbeat, or fainting

• Severe dizziness or allergic reaction (swelling, rash, difficulty breathing)

Storage Instructions

• Store at room temperature (20–25 °C / 68–77 °F)

• Keep away from moisture, heat, and direct sunlight

• Store securely and out of reach of children

• Do not use after the expiration date printed on the packaging

• Dispose of unused or expired medication responsibly via a pharmacy take-back program