Very important to know, have you allergic reaction to components Viagra or no ? And you should to read the ingredients on the label, before take Viagra . If you have any side effects or allergic reaction call a doctor . The most common side effects , may include:skin rash, headaches,heartburn , facial flushing, nausea, vomiting, bloating, and abdominal pains. Consult a health care proffesional if erection persists for longer than four hours.
Also the side effects of Viagra may be the next: stuffiness in one’s nose, sudden drop in blood pressure, upset stomach or diarrhea, back pains , flushing or warmth in face or chest or neck, and abnormal changes in color vision or issues with memory. Consult a pharmacist if irregular behavior persists.