What is Silagra? #Silagra is a drug that is most commonly used and know for the treatment of #erectiledysfunction and other male sexual function problems. The active ingredient in the drug is sildenafil citrate. How to Take Silagra? This drug is taken an hour before engaging in any sexual activity if used to treat #ErectileDysfunction and stays effective for about 4 to 5 hours after taking the drug. How does Silagra Work? #Silagra contain #sildenafil, a phosphodiesterase type 5 (PDE5) inhibitor that acts on the erectile tissue of the penis to increase blood flow, which is needed to cause an erection. Who should not take? You should not use Silagra if you: are taking any nitrate medication, such as nitroglycerin for angina, as it may lead to a severe drop in blood pressure. Dosage of Silagra It is the maximum daily dosage of Silagra. Thus, it is not recommended to take more than 1 pill a day. If you feel that you need to reduce the dose, a half of the pill can be taken. Side-effects of Silagra Silagra comes with its own set of side effects. They are listed as under: 1. Feeling sick 2. Minor Headache 3. Indigestion 4. Feeling of flushing 5. Change in the vision of a person