DAMIEN LOVEGROVE / SCIENCE PHOTO LIBRARY DAMIEN LOVEGROVE / SCIENCE PHOTO LIBRARY
Prozac. A woman reading the dose label on a pack of capsules of the drug Prozac (fluoxetine hydrochloride), an anti-depressant medication. Each green and yellow capsule contains 20mg of the drug. Prozac inhibits the uptake of the chemical serotonin, a powerful body chemical which 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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