Avodart side effects
Avodart · dutasteride · by GlaxoSmithKline (Avodart)
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.
Similar profile to finasteride. Some studies show slightly higher rate of sexual side effects, others show no difference. Smaller long-term safety dataset than finasteride.
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Frequently asked
What are the most common Avodart side effects?+
Similar profile to finasteride. Some studies show slightly higher rate of sexual side effects, others show no difference. Smaller long-term safety dataset than finasteride.
How long do Avodart 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 Avodart?+
Stop and contact a clinician for severe abdominal pain, persistent vomiting, signs of pancreatitis, gallbladder symptoms, or any reaction outside the expected GI profile.