I Am Currently On Plaquenil, Voltaren, Omeprazole, Gabapentin, And Nature

I am currently on Plaquenil, voltaren, omeprazole, gabapentin, and nature through. I would like to know if I can take them together. Usually I take nature throid and omperazole when I first get up. After breakfast I take plaquenil and voltaren. Gabapentin is taken at bed time. Along with these prescription drugs I take a 50,000 in D3 once a week, a calcium tablet two times a day, B13, and a multi vitamin. Lately, because of terrible leg and foot cramps, I have taken a potassium tablet and a magnesium tablet. I understand that certain supplements do not absorb well in my system if taken with my prescriptions I am on. Can you tell me how to know what not to mix?