I had to have allergy testing/desensitization to take one med that I really needed! Have you sought out an expert allergist? Not all medications come in liquid form so they can be titrated, but any expert doctor (ENT/Allergist) can, with time, make any med into a solution so they can test you, find your level of reaction and need of coverage.. and make it so you take the shot to allow you to take the medicine and receive the benefits you need!

It's a hassle, but it works. (hmm maybe I should revisit this for an antidepressant for myself? I'm just so "brittle" when it comes to reactions, and my original allergist retired...)