Cialis side effects
Cialis · tadalafil · by Eli Lilly
Reviewed by the glpzoom Editorial Team against primary clinical sources — FDA labeling, peer-reviewed trials, and specialty-society guidelines.
Content current as of June 2026; updated when guidance or availability changes.
Back pain, muscle aches (more common than with sildenafil). Headache, flushing, nasal congestion. Same vision/hearing warnings.
Where to get Cialis
Hims
from $13/mo- Best for cash-pay
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Hims ED — generic sildenafil from $13/mo
Ro
from $2/mo- Best for clinical oversight
Ro — original online ED brand, sildenafil & tadalafil
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- ← Full Cialis overview
People also ask
Frequently asked
What are the most common Cialis side effects?+
Back pain, muscle aches (more common than with sildenafil). Headache, flushing, nasal congestion. Same vision/hearing warnings.
How long do Cialis side effects last?+
Most GI side effects (nausea, constipation) peak in the first 4-8 weeks of dose escalation and improve as the body adapts. Severe or persistent symptoms warrant a clinician call.
When should I stop Cialis?+
Stop and contact a clinician for severe abdominal pain, persistent vomiting, signs of pancreatitis, gallbladder symptoms, or any reaction outside the expected GI profile.