Malegra Green 100 is an alternative vasodilator drug. Additionally, the action of this capsule ensures blood flow to the penis and various obstructed parts. Sildenafil plays a major role in this medicine. Take one capsule with 1 or 1/2 cup of water. Do not chew or crush the capsule, but swallow it whole. The liquid you use with the capsule should be plain water, nothing else. This medicine should be used by men above 18 years of age only as per the doctor's advice.