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Generic Viagra 100 mg (Sildenafil Tablets) - Sildenafil Best Seller

Generic Viagra 100 mg (Sildenafil Tablets)

(4 reviews)

Generic Viagra 100 mg is a prescription medicine containing sildenafil citrate, used to treat erectile dysfunction (ED) in adult men. It works by increasing blood flow to the penis during sexual stimulation, which can help achieve and maintain an erection.

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Buy Generic Viagra 100 mg Online

Generic Viagra 100 mg contains sildenafil citrate, a prescription medicine used to treat erectile dysfunction (ED) in adult men. Sildenafil belongs to a class of medicines called phosphodiesterase-5 (PDE5) inhibitors. It works by increasing blood flow to the penis during sexual stimulation, which can help achieve and maintain an erection.

The appropriate dose of sildenafil depends on individual response, tolerability, and medical considerations. A healthcare provider should determine whether the 100 mg strength is appropriate for you.

Product Quick Facts

InformationDetails
Generic NameSildenafil citrate
Brand NameViagra
Strength100 mg
Drug ClassPDE5 inhibitor
Dosage FormOral tablet
Route of AdministrationOral
Prescription RequiredYes
Primary UseErectile dysfunction (ED)
Typical TimingApproximately 1 hour before sexual activity
Maximum FrequencyOnce per day
StorageStore according to the product labeling

Uses

Generic Viagra 100 mg is used to treat erectile dysfunction in adult men.

Sildenafil helps improve blood flow to the penis during sexual stimulation. It does not increase sexual desire and requires sexual stimulation to work.

How It Works

Sildenafil works by inhibiting PDE5, an enzyme involved in regulating blood flow in the penis. During sexual stimulation, this allows blood vessels in the penis to relax and increases blood flow, which can help produce and maintain an erection.

Sildenafil does not cause an erection without sexual stimulation and does not increase sexual desire.

How to Use

Take Generic Viagra 100 mg exactly as prescribed by your healthcare provider.

Sildenafil is generally taken as needed approximately 1 hour before sexual activity. It may be taken from 30 minutes to 4 hours before sexual activity. Do not take more than one dose in a 24-hour period unless specifically directed otherwise by your healthcare provider.

Sildenafil may be taken with or without food. A high-fat meal may delay the onset of its effect.

Do not change your prescribed dose without consulting your healthcare provider.

Possible Side Effects

Common side effects of sildenafil may include:

Headache

Flushing

Indigestion

Nasal congestion

Dizziness

Visual changes

Side effects can vary between individuals. Contact your healthcare provider if side effects are persistent, severe, or concerning.

Seek immediate medical attention for an erection lasting more than 4 hours or sudden loss of vision or hearing.

Important Safety Warning

Do not take Generic Viagra 100 mg with nitrate medicines.

Sildenafil is contraindicated with organic nitrates or nitric oxide donors because the combination can cause a significant and potentially dangerous decrease in blood pressure. Examples include nitroglycerin and isosorbide medicines used for chest pain.

Sildenafil should also not be used with guanylate cyclase stimulators such as riociguat. Tell your healthcare provider about all medicines and supplements you take before using sildenafil.

Drug Interactions

Sildenafil can interact with certain prescription medicines, over-the-counter medicines, and supplements. Important interactions include nitrates, alpha-blockers, certain CYP3A4 inhibitors, and other medicines that can affect blood pressure or sildenafil levels.

Your healthcare provider should review your current medications before prescribing sildenafil.

Safety Advice

Heart conditions: Tell your healthcare provider about any cardiovascular conditions before using sildenafil. Sexual activity may pose a cardiovascular risk for some people.

Blood pressure: Sildenafil can lower blood pressure, particularly when combined with certain medicines.

Alpha-blockers: Tell your healthcare provider if you take an alpha-blocker, as dose adjustments may be necessary.

Alcohol: Excessive alcohol consumption may increase the likelihood of dizziness or low blood pressure.

Other medicines: Tell your healthcare provider about all prescription medicines, over-the-counter products, and supplements you use.

Vision or hearing changes: Seek medical attention for sudden vision or hearing loss.

Prolonged erection: Seek immediate medical attention for an erection lasting longer than 4 hours.

Prescription use: Use sildenafil only as prescribed and do not exceed the recommended dose.

Quick Tips

Take sildenafil only as directed by your healthcare provider.

It is generally taken approximately 1 hour before sexual activity.

Do not take more than one dose per day.

Sexual stimulation is required for sildenafil to work.

Do not use sildenafil with nitrate medicines.

Keep the medication out of reach of children.

Store the product according to its labeling.

When to Contact Your Healthcare Provider

Talk with your healthcare provider if you have questions about your dose, experience persistent side effects, or take other medicines that may interact with sildenafil.

Seek emergency medical attention for an erection lasting more than 4 hours, sudden vision loss, or sudden hearing loss.

Medical Disclaimer

This information is provided for educational purposes and does not replace professional medical advice, diagnosis, or treatment. Generic Viagra 100 mg is a prescription medicine and should be used only as directed by a qualified healthcare provider. Always discuss your medical history and current medications with your healthcare provider before starting treatment.

Take it daily only if your healthcare provider recommends it.

Stress, alcohol, heavy meals, or an underlying health condition may reduce its effectiveness.

It should only be used by men diagnosed with erectile dysfunction and prescribed by a healthcare provider.

No. It helps with erections but does not improve sperm count or male fertility.

Don't stop or increase the dose on your own. Speak with your healthcare provider to discuss other treatment options.

Written By
Dylan Carter

Dylan Carter

Medical Content Writer

Reviewed By
Dr. Tom Henry

Dr. Tom Henry

MD (Sexual Health Specialist)

Last Updated: September 22, 2026

Editorial Policy

Our content is carefully reviewed by qualified healthcare professionals to ensure accuracy and reliability.

Read our editorial policy

Disclaimer

This content is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider.

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Customer Reviews

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