Avodart (dutasteride) is a 5-alpha reductase inhibitor used to treat benign prostatic hyperplasia (BPH) in men with an enlarged prostate. It works by lowering levels of a hormone called dihydrotestosterone (DHT), which is a major cause of prostate growth. Avodart is also used to treat symptomatic BPH in men with an enlarged prostate.

Avodart is available in generic form. Common side effects of Avodart include:

  • decreased sex drive (libido)
  • impotence (erectile dysfunction)
  • breast tenderness or enlargement
  • hives
  • itching
  • rash
  • swelling of the lips, face, tongue, or throat
  • difficulty swallowing
  • hoarseness
  • runny nose
  • decreased ejaculate amount

Avodart may interact with other 5-alpha reductase inhibitors, oral contraceptives, azole antifungals, HIV protease inhibitors, macrolide antibiotics, barbiturates, seizure medications, rifampin, or St. John's wort. Tell your doctor all medications and supplements you use. During pregnancy, Avodart should be used only when prescribed. It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding.

Avodart Dutasteride Side Effects

Medically reviewed by Drugs.com. Last updated on Sep 5, 2019.


Side Effects




For the Consumer

Applies to dutasteride: oral capsule

Along with its needed effects, dutasteride may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking dutasteride:

  • Less common

Body aches or pain



decreased urine output

difficulty with swallowing


ear congestion


general feeling of discomfort or illness


loss of voice

muscle aches and pains

nasal congestion

painful or difficult urination

runny nose


sore throat


tightness in the chest

troubled breathing with exertion

unusual tiredness or weakness



Blistering, peeling, or loosening of the skin


bloody or black, tarry stools

bloody or cloudy urine

chest pain


clay-colored stools

dark urine

decrease in frequency of urination

decrease in urine volume

difficult, burning, or painful urination

dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position

enlarged breasts

fruit-like breath odor



joint pain

large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs

loss of appetite


pain in the back, ribs, arms, or legs

pains in the stomach, side, or abdomen, possibly radiating to the back

pale skin

persistent feeling of being unwell

puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue

rash with flat lesions or small raised lesions on the skin

red skin lesions, often with a purple center

red, irritated eyes

severe or continuing stomach pain

sores, ulcers, or white spots on the lips or in the mouth

stomach discomfort, upset, or pain


swelling of the testicles

tender, swollen glands in the neck

troubled breathing

tunnel vision

upper right abdominal or stomach pain

vomiting of blood or material that looks like coffee grounds

yellow eyes and skin

Incidence not known

Absent, missed, or irregular menstrual periods

back pain

Avodart 0.5mg

PackagePer PillPriceSavingsBonusOrder
0.5mg × 30 pills$1.26$37.68+ Cialis
0.5mg × 60 pills$0.98$58.92$16.44+ Levitra
0.5mg × 90 pills$0.89$80.16$32.88+ Viagra
0.5mg × 120 pills$0.84$101.39$49.33+ Cialis
0.5mg × 180 pills$0.8$143.87$82.21+ Levitra
0.5mg × 270 pills$0.77$207.58$131.54+ Viagra
0.5mg × 360 pills$0.75$271.3$180.86+ Cialis
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