If you are allergic to Suhagra 50 mg or any other part of this medicine. Tell your doctor if you are allergic to any medications. Be sure to tell us about the allergy and what signs you had. This includes talking about spots; Hives; Itching; Shortness of breath; Coughing up swelling of the face, lips, tongue or throat; Or any other signs. If you use drugs called poppers such as amyl nitrite and butyl nitrite. If you have been told by your doctor not to have sex.