Sildenafil: Possible Side Effects
Sildenafil (also known as Viagra), like all drugs, can cause side effects in some cases. Usually, the side effects of sildenafil are mild or moderately pronounced and are transient.
What side effects does Sildenafil have?
If you have developed any of the serious side effects listed below, stop taking the medication and seek medical help immediately:
- Allergic reaction (rarely develops). Symptoms: sudden hoarseness, difficulty breathing or dizziness, swelling of the eyelids, face, lips or throat;
- Chest pain (develops infrequently). If this symptom appears during or after intercourse, take a semi-sitting position and try to relax. Do not use nitrates for treatment;
- Long and sometimes painful erections (frequency unknown). If an erection lasts more than 4 hours, you should immediately consult a doctor;
- Sharp decrease or loss of vision (frequency unknown);
- Serious skin reactions (frequency unknown). Symptoms may include severe peeling and swelling of the skin, blistering of the mouth, on the genitals and around the eyes, and fever;
- Seizures (frequency unknown).
Other side effects include:
- Very frequent: headache;
- Frequent: facial flushing, indigestion, visual disturbances (including impaired color perception, sensitivity to light, blurred vision or reduced visual acuity), nasal congestion and dizziness;
- Infrequent: vomiting, skin rash, hemorrhage in the back of the eye, eye irritation, flushing / redness of the eyes, pain in the eyes, double vision, unusual sensation in the eyes, tearing, heart palpitations, heart palpitations, muscle pain, drowsiness, decreased tactile perception, dizziness, tinnitus, nausea, dry mouth, bleeding from the penis, blood in the sperm and/or urine, chest pain and feeling tired;
- Rare: high blood pressure, low blood pressure, fainting, stroke, heart attack, arrhythmia, nosebleeds, and sudden hearing loss or loss;
- The frequency of side effects is unknown (the frequency cannot be determined from the available data): unstable angina (heart disease), sudden death, temporary deterioration of the blood supply to parts of the brain. Most (but not all) men who had these side effects developed had heart problems before taking sildenafil. In this regard, it is not possible to establish the existence of a direct connection between the development of these phenomena and the administration of sildenafil.
If any side effects occur, including those not listed in this article, you must inform your doctor, pharmacist or nurse about this. By reporting side effects, you are helping to provide more information on the safety of this drug.
How to avoid side effects of Sildenafil?
If you follow these simple tips suggested by My Canadian Pharmacy Greene, your risk of getting side effects after taking Sildenafil will be reduced to the minimum.
- Do not take the medication in a dose higher than that prescribed by your doctor;
- If, in your opinion, you need to increase the dose of the drug, check with your doctor;
- Silвenafil should be taken no more than once a day;
- If you have severe kidney or liver disease, start with the lowest dose (25 mg) of Sildenafil;
- If you are taking protease inhibitors used to treat HIV infection, take a dose of 25 mg and limit the use of the drug to a maximum single dose of 25 mg for 48 hours;
- If you have problems with a prostate gland or high blood pressure, and you are taking alpha-blockers in this regard, start with a lower dose;
- If you are taking CYP3A4 isoenzyme inhibitors, start with a lower dose;
- Do not eat fatty foods before taking the medication since they contain a lot of fat, and the drug will start working a little later;
- Avoid drinking high doses of alcohol before sexual intercourse since it can temporarily impair the ability to erect.