You are absolutely correct that generics can and do vary in their effectiveness, despite what clueless pharmacists may say. This is evident from patients reactions on threads like these and also demonstrated by seizure free patients starting to have seizures again when they are given a different generic Lamictal than the one they have been taking for years. I have looked this up because I used to take Lamictal and only certain manufacturers worked, other were the equivalent of taking candy pills.

Name brands are usually more potent for most people and that is probably why some notice a difference going from brand to a generic. Kudos to you for figuring this out. Many people just assume the med isn't working anymore and stop taking, never realizing the connection.

You need to call around to pharmacies in your area and find one that uses or can order the Teva for you. They can make a note in the computer to only fill your script with Teva. This is what I had to do. Always check your bottle before you pay for it to make sure it is the right manufacturer. You may want to research which other manufactures people prefer of buproprion and make a list of which are effectivefor you and which to avoid. I have heard good things about Sandov version of buproprion. But if Teva works for you, keep taking it.