cramps--the brest thing for cramps is dolomite. I haven't seen it around lately. If you can't find it, use a pill that has carbonates of calcium and magnesium which is what dolomite consists of.

Vitamin D3-- The recomended sup[plement dose for D3 is 2000 IU. If you get enough sunshine, you may not need the supplement.

Arginine-carnitine--I do not like combinations. If you take them separately you can adjust the doseage for each one. I take both Acytel L carnatine and L- Carnatine. One is for brain functions and the other is for heart and muscle functions.

Co Q10--I take 100 mg . I costs about $15 for 150 softgels at IHERB