ACTIVE HALF-LIFE
5-12 hours
CLASSIFICATION
PDE5 inhibitor
DOSAGE
Men 25-200 mg/day
ACNE
No
WATER RETENTION
No
HBR
Possible
HEPATOTOXICITY
No
AROMATIZATION
No
MANUFACTURER
Pfizer
WAREHOUSE
International Warehouse 2
SUBSTANCE
Sildenafil
What is VIAGRA and How Does It Work?
VIAGRA is a well-known phosphodiesterase type 5 (PDE5) inhibitor designed to enhance your sexual health. By relaxing the blood vessels in the penis, it promotes increased blood flow during sexual arousal, making it easier to achieve and maintain an erection. It's important to note that VIAGRA requires sexual stimulation to be effective and is specifically formulated for men experiencing erectile dysfunction.
Important Considerations Before Use
Before taking VIAGRA, be mindful of the following:
- Inform your doctor if you are taking nitrates, as this combination can result in dangerously low blood pressure.
- Notify your healthcare provider about any nitric oxide donors, such as amyl nitrite ("poppers").
- Discuss any allergies to sildenafil or other ingredients in VIAGRA.
- Be cautious if you have severe heart or liver problems, a history of stroke or heart attack, or low blood pressure.
- Let your doctor know if you suffer from rare eye disorders like retinitis pigmentosa or have previously experienced vision loss due to NAION.
Special Precautions with VIAGRA
Consult your doctor if you have:
- Sickle cell anemia, leukemia, or multiple myeloma.
- Peyronie's disease or any deformity of the penis.
- Existing heart issues requiring thorough evaluation before engaging in sexual activity.
- A stomach ulcer or bleeding disorders like hemophilia.
If you experience sudden vision loss or a decrease in vision, discontinue use and seek medical help right away.
Avoid using VIAGRA with other erectile dysfunction treatments.Considerations for Young Adults
VIAGRA is not recommended for individuals under 18 years of age.
Guidance for Patients with Kidney or Liver Concerns
Inform your doctor about any kidney or liver issues, as a lower dose may be necessary.
Medication Interactions
Always inform your healthcare provider about all medications you're currently taking, including over-the-counter products. VIAGRA can interact with medications for chest pain, so it's crucial to communicate this information, especially in emergencies.
Do not combine VIAGRA with nitrates or nitric oxide donors due to the risk of severe blood pressure drops.
If you are on protease inhibitors for HIV, your doctor might start you on the lowest dose of VIAGRA (25 mg).
Patients using alpha-blockers for hypertension or prostate conditions should be cautious, as dizziness may occur due to low blood pressure when standing. It's advisable to have a regular daily dose of alpha-blockers before starting VIAGRA, and your doctor may recommend a lower dose (25 mg).
Taking VIAGRA with Food and Drink
VIAGRA can be taken with or without food; however, a heavy meal may slow its effectiveness. Limit alcohol consumption prior to taking VIAGRA, as excessive drinking may hinder your ability to achieve an erection.
Pregnancy and Breastfeeding
VIAGRA is not intended for use by women.
Driving and Operating Machinery
Since VIAGRA may cause dizziness and affect vision, assess how it impacts you before driving or using heavy machinery.
Key Information About VIAGRA Ingredients
If you've been advised by your doctor to avoid sugars (like lactose), consult with them before using VIAGRA.
How to Take VIAGRA
Always adhere to your doctor's instructions. The typical starting dose is 50 mg, not to exceed one dose per day. Take it approximately one hour before planned sexual activity, swallowing the tablet whole with a glass of water. If you find the dosage too strong or weak, consult your doctor. VIAGRA requires sexual stimulation to work effectively, typically taking effect within 30 minutes to one hour, although a heavy meal may delay this timeframe.
If VIAGRA fails to produce an erection or if it doesn?t last long enough for sexual intercourse, inform your doctor.
Overdose Information
Taking more than the prescribed amount of VIAGRA may lead to increased side effects without enhancing effectiveness. Always stick to the recommended dosage and contact your doctor if you inadvertently take more than directed.
For any questions regarding the use of this medication, consult your healthcare provider.
Potential Side Effects
As with any medication, VIAGRA can cause side effects, though not everyone will experience them. Common side effects are usually mild to moderate and temporary.
Should you experience chest pain during or after sexual activity:
- Sit in a semi-upright position and remain calm.
- Avoid using nitrates for chest pain relief.
- Contact your doctor immediately.
Prolonged, painful erections exceeding four hours require immediate medical assistance.
If you notice sudden vision loss or changes, stop taking VIAGRA and seek urgent medical care.
Common Side Effects:
- Headache (likely in more than 1 in 10 patients).
- Facial flushing, indigestion, visual disturbances (including color tints, light sensitivity, blurred vision), nasal congestion, and dizziness (likely in 1 to 10 in 100 patients).
- Vomiting, skin rashes, eye bleeding, eye irritation, double vision, and fatigue (likely in 1 to 10 in 1,000 patients).
- High blood pressure, fainting, nosebleeds, and sudden hearing loss (likely in 1 to 10 in 10,000 patients).
- Rare side effects may include irregular heartbeat, severe skin reactions, and more serious conditions (typically in men with pre-existing heart issues).
If any side effect becomes severe or if you notice any not mentioned here, contact your doctor.
Storage Instructions
- Keep out of reach of children.
- Store below 30шC.
- Keep in the original packaging to protect from moisture.
- Do not use VIAGRA past its expiration date.
For the environment's sake, do not dispose of medications in regular waste or down the drain; consult your pharmacist for proper disposal methods.

