ACTIVE HALF-LIFE
5-12 hours
CLASSIFICATION
PDE5 Inhibitor
DOSAGE
Men 25-200 mg/day
ACNE
None
WATER RETENTION
None
HBR
Possible
HEPATOTOXICITY
None
AROMATIZATION
None
MANUFACTURER
Pfizer
WAREHOUSE
International Warehouse 2
SUBSTANCE
Sildenafil
What is VIAGRA and How Does It Work?
VIAGRA is a leading PDE5 inhibitor that effectively relaxes blood vessels in the penis, significantly enhancing blood flow during moments of sexual arousal. It's essential to remember that VIAGRA will only facilitate an erection when there is sexual stimulation. This medication is specifically tailored for men facing erectile dysfunction (ED), often described as impotence, which hinders one's ability to achieve or sustain an erection suitable for sexual activity.
Important Considerations Before Using VIAGRA
Do not take VIAGRA if:
- You are currently on nitrates, as this combination can cause a dangerous drop in blood pressure. Always inform your healthcare provider if you're on such medications prescribed for angina or chest pain.
- You are using nitric oxide donors, like amyl nitrite, due to a similar risk of severe hypotension.
- You have a known allergy to sildenafil or any other ingredient in VIAGRA.
- You have serious heart or liver conditions.
- You have recently had a stroke or heart attack, or have low blood pressure.
- You have rare genetic eye disorders such as retinitis pigmentosa.
- You have a history of vision loss due to non-arteritic anterior ischemic optic neuropathy (NAION).
Exercise caution with VIAGRA if:
- You have sickle cell anemia, leukemia, or multiple myeloma.
- You have physical deformities of the penis or Peyronie?s Disease.
- You have existing heart conditions; your doctor should assess your heart health prior to engaging in sexual activity.
- You have a stomach ulcer or bleeding disorders like hemophilia.
If you experience a sudden change or loss of vision, stop taking VIAGRA and consult your healthcare provider immediately.
It?s important to avoid combining VIAGRA with any other oral or topical erectile dysfunction treatments.
Special Considerations for Younger Users
VIAGRA is not recommended for individuals under 18 years of age.
Considerations for Patients with Kidney or Liver Issues
Please inform your doctor if you have kidney or liver problems, as a lower dosage may be necessary.
Interactions with Other Medications
Always disclose all medications you are currently taking, including over-the-counter products. VIAGRA can interact with certain drugs, particularly those prescribed for chest pain. In case of a medical emergency, inform healthcare providers that you have recently taken VIAGRA and the timing of your dosage. Avoid using VIAGRA with nitrates to prevent dangerously low blood pressure.
If you're on protease inhibitors for HIV, your doctor may recommend starting with the lowest dose (25 mg) of VIAGRA. Patients undergoing alpha-blocker therapy for high blood pressure or prostate enlargement may experience dizziness when combining it with VIAGRA. To minimize this risk, ensure you're on a stable alpha-blocker dosage before starting VIAGRA, and consider beginning with a lower dose (25 mg).
Using VIAGRA with Food and Drink
VIAGRA can be taken with or without food; however, a heavy meal may delay its effectiveness. To achieve optimal results, consider limiting alcohol intake before using VIAGRA, as excessive consumption can hinder your ability to achieve an erection.
Pregnancy and Breastfeeding
VIAGRA is not intended for use by women.
Driving and Operating Machinery
Be cautious, as VIAGRA may cause dizziness and affect vision. Assess your response to the medication before driving or operating machinery.
Important Information About VIAGRA Ingredients
If advised by a healthcare provider to avoid certain sugars, such as lactose, consult your doctor before taking VIAGRA.
How to Use VIAGRA
Adhere to your doctor?s instructions on how to take VIAGRA. If you have questions, consult your healthcare provider or pharmacist. The standard starting dose is 50 mg. Do not exceed one dose of VIAGRA in a 24-hour period. Take the tablet approximately one hour before planned sexual activity, swallowing it whole with water.
VIAGRA will assist in achieving an erection only when you are sexually aroused. Effects typically begin within 30 minutes to an hour, though it may take longer if taken with a heavy meal. If VIAGRA does not produce an erection or if the erection does not last long enough for intercourse, inform your doctor.
If You Take Too Much VIAGRA
Increased side effects may occur with higher doses, and exceeding 100 mg will not enhance effectiveness. Only take the prescribed dosage. Contact your doctor if you suspect an overdose.
Possible Side Effects
As with any medication, VIAGRA may cause side effects, although not everyone experiences them. Reported side effects are generally mild to moderate and transient.
If you experience chest pain during or after sexual activity:
- Remain calm and sit in a semi-upright position.
- Avoid using nitrates for relief.
- Seek medical attention immediately.
VIAGRA may also trigger allergic reactions. Seek prompt medical help if you experience symptoms such as sudden wheezing, difficulty breathing, dizziness, or swelling of the face, eyelids, lips, or throat.
Prolonged or painful erections have been reported; if an erection lasts more than four hours, seek medical assistance immediately.
Common side effects (occurring in over 10% of patients) include headaches, facial flushing, indigestion, visual changes (such as color tinge, light sensitivity, or blurred vision), nasal congestion, and dizziness. Less common side effects may include vomiting, skin rashes, eye discomfort, and irregular heartbeat.
Rare side effects can include severe conditions such as high or low blood pressure, fainting, stroke, and sudden hearing loss. There have also been rare reports of serious incidents like rapid heartbeat or even death, particularly in men with pre-existing heart conditions. It remains unclear if these events are directly related to VIAGRA.
If you experience any severe side effects or notice any not mentioned in this guide, please consult your doctor.
How to Store VIAGRA
- Keep out of reach of children.
- Store below 30шC.
- Keep in the original package to guard against moisture.
Do not use VIAGRA after the expiration date on the packaging. The expiration date indicates the last day of that month. Dispose of unused medications properly, and consult your pharmacist for guidance on safe disposal methods to protect the environment.

