Malegra 50 mg is sildenafil 50 mg, and alcohol can affect how well it works. A small amount of alcohol does not necessarily cause a dangerous interaction; studies found sildenafil 50 mg did not significantly increase alcohol-related blood-pressure lowering in healthy volunteers. Avoid heavy drinking, because alcohol itself can make it harder to get or maintain an erection and may increase dizziness or light-headedness. For the best effect, taking Malegra 50 mg when you are not heavily intoxicated is preferable. Never combine sildenafil with nitrate medicines (such as nitroglycerin/GTN or isosorbide) because of the risk of a dangerous blood-pressure drop. If you tell me how much alcohol you usually drink , I can explain the practical risk with Malegra 50 mg.