I am 67 and on 5mg of crestor. is 30 mg of coq10 every other day enough or should i take more?

Crestor and CoQ: https://www.webmd.com/diet/supplement-guide-coenzymeq10-coq10#1 50 -100 mg is more common but your symptoms should be the basis of taking the supplement. if you are feeling fine with no muscle aches and pains that should be enough . You could also check your CK -creatine kinase which sometimes is elevated with statins f/u /w /MD https://www.healthline.com/health/coq10-and-statins#statins