ANNA WRIGHT / SCIENCE PHOTO LIBRARY ANNA WRIGHT / SCIENCE PHOTO LIBRARY
Prozac, computer artwork. Capsules of the anti- depressant drug Prozac (fluoxetine hydrochloride). Each green and yellow capsule contains 20mg of the drug. Prozac inhibits the uptake of the chemical serotonin, a powerful body chemical that constricts blood vessels and is thought to be involved in sleep and sensory perception. In depressive illness, the typical dose of Prozac is 20mg daily and up to 60mg for sufferers of bulimia nervosa. Anti-depressant drugs usually take at least 10 days to have any beneficial effect.
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