There may be some side effects when taking CIALIS. The most common side effects with CIALIS are: headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Men who get back pain and muscle aches usually get them 12 to 24 hours after taking CIALIS. Back pain and muscle aches usually go away within 2 days.

Call your healthcare provider if you get any side effect that bothers you or one that does not go away.

Check with your doctor immediately if any of the following side effects occur while taking tadalafil:
Less common
Arm, back, or jaw pain
blurred vision
chest pain or discomfort
chest tightness or heaviness
chills
cold sweats
confusion
dizziness
fainting
fast or irregular heartbeat
headache
hearing loss
nausea
nervousnesscialis
pain or discomfort in the arms, jaw, back, or neck
pounding in the ears
shortness of breath
slow or fast heartbeat
sweating
unusual tiredness or weakness
vomiting

Rare
Painful or prolonged erection of the penis

Incidence not known
Abdominal or stomach pain
blindness
cough
cracks in the skin
decrease or change in vision
diarrhea
difficulty with speaking
double vision
fast, irregular, pounding, or racing heartbeat or pulse
headache, severe and throbbing
hives or welts
inability to speak
itching
joint or muscle pain
loss of heat from the body
numbness or tingling of the face, hands, or feet
red irritated eyes
red skin lesions, often with a purple center
red, swollen skin
redness of the skin
redness or soreness of the eyes
scaly skin
skin rash
slow speech
swelling of the feet or lower legs

CIALIS is not right for everyone. Only your healthcare provider and you can decide if CIALIS is right for you.