Some "Generic" medicines, espetially in relation to sycotherapy medication can have different effectiveness than it's original counter-part.
"Lilly Fluoxitine" Instead of the brand name "Prozac" works way better for me even tho both contains the same ingredients (Keeping in mind also that Lilly is a Generic so the door can swing both ways). It might be due to the quality of ingredients used (Suggesting the reason for the generic being cheaper than the original) or the process (Suggesting the differing effectiveness from the original).
Your doctor (but most prob more likely your pharmacist) would most definately be able to tell you which class of medication shows varying effectiveness between its Generic and Original counter-parts and wether he finds the Generic or Original to work better. Sometimes it varies from person to person as well.
Some classes of medications show absolutely no difference, except in terms of price while others can have a definate difference in effectiveness and/or side-effects.
Hope this answers your question somewhat
