Capsules can be a problem long term after bypass, its a good idea to avoid them completely. They dont break down enough, and its been known for patients to be scoped, and for the shells have remained in the pouch and caused a blockage.
However, tablets should be fine long term.
Also, sad to say, recent research suggests that malabsorption is not as much as previously thought. So quantities of medication shouldn't really need to be changed, especially considering as we lose weight, the effect should improve.