Sildenafil

Sildenafil works for the treatment of erectile dysfunction or impotence or inability to get or keep an erection during sexual activity. It is also used to improve exercise capacity in men and women with Pulmonary arterial hypertension (PAH) (high blood pressure in the arteries carrying blood to the lungs from the heart).

Sildenafil for patients with erectile dysfunction, works by preventing the action of a chemical called, phosphodiesterase type-5. This works to widen and relax the muscles in blood vessels in the penis and increases blood flow. This helps to produce and maintain an erection .For Pulmonary arterial hypertension or PAH Sildenafil works by relaxing the muscles in the walls of the arteries, which then allows the blood vessels to become wider, This reduces the pressure in the arteries and allows blood to flow more easily through them. This then increases the supply of blood to the lungs and directly improves the ability to do exercise

Patients who take Sildenafil may suffer from such side effects;

Headache,
Muscle Aches,
Erythema,
Breathlessness,
stomach pain,
Insomnia (difficulty in sleeping),
Dyspepsia,
Nose bleed,
Nausea,
Diarrhea,
Eyesight problems

Sildenafil is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. 

Sildenafil should not be taken by :

-People who also take nitrates such as nitroglycerin (glycerin trinitrate),
as this may drop in blood pressure.
-Under 18 years
-Female
-Men hypertensive to Sildenafil
-Alpha -blockers (anti hypertensive drug)
-Prostate medicine
-Men with end-stage illnesses like liver or kidney disorder , anemia or leukemia, prostate enlargement, serious heart complications, uncontrolled high blood pressure, longstanding nervous disorders

Sildenafil can produce mild dizziness as side effects; hence, it is advisable not to indulge in outdoor activities or operate heavy machinery. Patients should only take the dosage when needed.

Overdose symptoms may include chest pain, nausea, severe dizziness, fainting, irregular heartbeat.
If you experience any of the symptoms above, seek emergency medical attention.

Store Sildenafil at room temperature away from direct sunlight and moisture.
Keep the medicines out of the reach children.