Manforce 100mg Sildenafil Citrate is the main ingredient in Manforce. It is an active substance that increases the flow of blood in organs and helps them perform at maximum level. As an ED pro substance, Sildenafil Citrate increases the blood flow in penis by relaxing the blood vessels and filling erectile tissues. As a result, the penis achieves maximum hardness and erection. However, it is important not to try too much of the medicine as it may cause major side effects. Sildenafil citrate produces relaxing enzymes in the penis that causes the vessels to increase blood flow. The erectile tissue in the penis gets filled and helps penis react upon sexual stimulation. cGMP is the enzyme that keeps pace with the human emotion and increases the duration of sexual intercourse. At the same time there is another enzyme PDE5 that also works naturally causing the loss of erection when the stimulation decreases and desires are fulfilled. The duration of sex can be prolonged using Manforce that has its effects on human body up to 4 hours 30 minutes. However, the medicine is exposed to certain side effects as well. 100mg Manforce Pill is sufficient for 4 hours and it is advisable not to take more than one Pill at a time and try another one after at least 24 hours, when the body consumes the enzymes. Side Effects Customers with diabetes, heart problems, eye infection, digestion problem or liver problem should not try the medicine. Otherwise, the results may be worst. Even for the normal customers, the drug may have certain side effects that are mentioned below. The drug can cause urine infection, tract infection, bleeding from nose and abnormality in heartbeat. Some minor side effects include dizziness, indigestion, nasal congestion, headache and few small health issues. Some people can also experience mild side effects like redness of the skin, difficulty in breathing for short time period or flushes.