Does Amlodipine, Simvastatin Or Clonidine Cause Rise In BP?

My husband is taking Amlodopine, Simvastatin and Clonidine. Are there are contra -indications for using Hyaluronic Acid + CoQ 10 + Glucosmine/Chrondoitin/MSM supplements. He noticed that his blood pressure is lower (112/72) when not taking the three supplements over a weeks time, but doesn t know if one may be the basis for raising bp.(140/80 when on all three) any advice?