Viagra (Sildenafil) – Complete Medication Guide

Viagra is the brand name for sildenafil, a prescription phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction (ED) in adult men. It works by increasing blood flow to the penis during sexual stimulation, helping achieve and maintain an erection. Viagra does not increase sexual desire, cure erectile dysfunction, or protect against sexually transmitted infections (STIs). Learn more about sildenafil from MedlinePlus: https://medlineplus.gov/druginfo/meds/a699015.html.

This guide provides general educational information about Viagra, including its uses, available strengths, safety considerations, possible side effects, and frequently asked questions. It is intended for informational purposes only and should not replace professional medical advice.

What Is Viagra?

Viagra contains the active ingredient sildenafil citrate, which belongs to the PDE5 inhibitor class of medications. It works by relaxing the blood vessels and improving blood flow to the penis during sexual stimulation. An erection will only occur with sexual arousal.

Healthcare providers determine whether Viagra is appropriate after evaluating a person's medical history, cardiovascular health, and current medications. Additional prescribing information is available through DailyMed: https://dailymed.nlm.nih.gov.

Common Uses

Healthcare providers may prescribe Viagra for:

• Erectile dysfunction (ED)

• Difficulty achieving or maintaining an erection

• Other medically appropriate uses determined by a healthcare professional

Symptoms of erectile dysfunction may include difficulty getting an erection, maintaining an erection during sexual activity, or reduced erectile firmness. Learn more about erectile dysfunction from MedlinePlus: https://medlineplus.gov/erectiledysfunction.html.

Note: Sildenafil is also used to treat pulmonary arterial hypertension (PAH) under different brand names and dosing schedules. The treatment for PAH differs from the use of Viagra for erectile dysfunction.

Available Strengths and Formulations

Viagra is commonly available in the following tablet strengths:

• Viagra 25 mg

• Viagra 50 mg

• Viagra 100 mg

Generic sildenafil tablets are also available in various strengths. The appropriate dose depends on factors such as age, overall health, liver and kidney function, and response to treatment.

How Viagra Works

Viagra blocks the PDE5 enzyme, allowing nitric oxide to work more effectively and increasing blood flow to the penis during sexual stimulation.

Its effects may help:

• Improve erectile function

• Support a natural response to sexual stimulation

• Help achieve and maintain an erection suitable for sexual activity

Viagra generally begins working within 30 to 60 minutes, although timing may vary depending on the individual and whether it is taken with food.

Possible Side Effects

Like all prescription medications, Viagra may cause side effects.

Common Side Effects

• Headache

• Flushing

• Nasal congestion

• Indigestion

• Dizziness

• Blurred vision or temporary color vision changes

• Muscle aches

Serious Side Effects

Seek immediate medical attention if you experience:

• Chest pain

• Sudden vision loss

• Sudden hearing loss

• An erection lasting longer than four hours (priapism)

• Severe allergic reactions

• Difficulty breathing

For complete prescribing and safety information, refer to the U.S. Food and Drug Administration (FDA): https://www.fda.gov.

Important Safety Information

Before taking Viagra, tell your healthcare provider if you:

• Have heart disease

• Have low or uncontrolled high blood pressure

• Have liver or kidney disease

• Have had a recent heart attack or stroke

• Have certain inherited eye disorders

• Have bleeding disorders

Do not take Viagra if you use nitrate medications (such as nitroglycerin) for chest pain, as this combination can cause a dangerous drop in blood pressure.

Drug Interactions

Viagra may interact with:

• Nitrate medications

• Alpha-blockers

• Blood pressure medications

• Certain antifungal medications

• Certain antibiotics

• HIV medications

• Other medications for erectile dysfunction

Always inform your healthcare provider about all prescription medications, over-the-counter medicines, vitamins, and supplements you are taking.

Storage Information

Store Viagra:

• At room temperature

• Away from excessive heat and moisture

• In its original container

• Out of the reach of children and pets

Dispose of expired or unused medication according to local medicine disposal recommendations.

Frequently Asked Questions

What is Viagra used for?

Viagra is prescribed to treat erectile dysfunction by improving blood flow to the penis during sexual stimulation.

Is Viagra the same as sildenafil?

Yes. Viagra is the brand name, while sildenafil is the active ingredient.

How long does Viagra last?

The effects typically last up to four hours, although individual response varies.

Can I drink alcohol while taking Viagra?

Alcohol may increase the risk of side effects such as dizziness, low blood pressure, and difficulty achieving an erection. Discuss alcohol use with your healthcare provider, especially if you have underlying medical conditions.