Find emergency medical help if you have whichever of these signs of a hypersensitive response: hives; difficulty respiration; puffiness of your face, lips, tongue, or throat. In the course of sexual activity, if you turn out to be lightheaded or nauseated, or get ache, deadness, or tingling in your chest, arms, neck, or jaw, stop and address your medical professional right away. You could be sustaining a serious side effect of Viagra.

Stop using Viagra and name your physician without delay if in case you have a critical side effect like:

abrupt vision failure;
ringing in your ears, or sudden hearing loss;
chest ache or heavy sensation, ache spreading to the arm or shoulder, vomiting, perspiring, wide-ranging hard sensation;
inappropriate heartbeat;
swelling in your hands, ankles, or feet;
shortness of air;
vision alterations;
feeling light-headed, fainting; or
penis erection that is hurting or lasts four hours or for a longer time.

Much less critical Viagra side effects might include:
heat or redness in your face, neck, or chest;
stuffy nose;
headache;
memory disorders;
upset stomach; or
back pain.

This isn't a complete record of Viagra negative effects and some others can take place. Address your medical professionsal for health recommendation about side effects.