Cautions
Do not take Viagra if you are taking any nitrate-based drug, including nitroglycerin patches (Nitro-Dur, Transderm-Nitro), nitroglycerin ointment, nitroglycerin pills (Nitro-Bid, Nitrostat), and isosorbide pills (Dilatrate-SR, Isordil, Sorbitrate). Combining Viagra with these drugs may cause a lethal drop in blood pressure.
Possible Side Effects
If any side effects develop, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking Viagra when side effects occur.
Common side effects may include:
Abnormal vision, acid indigestion, diarrhea, flushing, headache, nasal congestion.
Less common to rare side effects may include:
Abdominal pain,abnormal dreams, abnormal ejaculation, allergic reactions, anxiety, asthma, bloodshot eyes, bone pain, breast enlargement, cataracts, chest pain, difficulty breathing, difficulty swallowing, dilated pupils, dizziness, dry eyes, dry mouth, emotional disturbances, other eye disorders, fainting,falling, genital problems, gout, gum inflammation, heart problems, increased night-time urination, increased pressure in the eyes, insomnia, itchy skin, joint disease, light sensitivity, loss of bladder control (urinary incontinence), low blood pressure, migraine headache, muscle ache, oral inflammation, painful erection, prolonged erection, rapid or throbbing heartbeat, rectal bleeding, ringing in the ears, seizure, sinus and throat inflammation, skin rash, skin ulcer, stomach or intestinal inflammation, sweating, swelling, thirst, tremor.
Heart attack, stroke, heart irregularities, dangerous surges in blood pressure, and sudden death have all been reported after use of Viagra, usually in men with existing cardiac risk factors.
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