Our expert says:
Fluoxetine is the proper chemical name of the active drug. It can be sold in different versions which are required to have been proven to be effectively identical. The original version was Prozac, which was more expensive, and other gneric versions are the same drug and usually cheaper. They may look different, indeed may need to look non-identical, but this should not be relevant
I've never heard of any 25 % leeway such as Liza mentions --- as far as I know the law and regulations require the same dosage of the active ingredient, and that they be equivalently "biolavailable" that is, likely to produce the same amount of the active drug within your blood circulation. Your doc shouldn't prescribe any alternative form unless he/shee feels confident of this, and expects no problems.
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