I am on several medications. Verapamil 180 and 120, imitrex, zocor, zetia, cymbalta, lamictal, vicodin, neurontin, prilosec, timoptic, symbacort, albuterol, claratin, nasonex, metformin, flector patch, flexeril, and lasix. Where can I find information on the interactions of all the medications and not each one singularly. I feel the some of the meds are working against each other, but I don't know for sure. Can you please help me?