Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
During sexual activity, if you become dizzy or nauseated, or have pain, numbness, or tingling in your chest, arms, neck, or jaw, stop and call your doctor right away. You could be having a serious side effect of tadalafil.
Stop using tadalafil and call your doctor at once if you have any of these serious side effects:
sudden vision loss
ringing in your ears, or sudden hearing loss
chest pain or heavy feeling, pain spreading to the arm or shoulder, nausea, sweating, general ill feeling
irregular heartbeat
swelling in your hands, ankles, or feet
shortness of breath
vision changes
feeling light-headed, fainting; or
penis erection that is painful or lasts 4 hours or longer
Less serious side effects may include:
warmth or redness in your face, neck, or chest
stuffy nose
headache
upset stomach; or
back pain
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect.
