@1115 Some find relief taking 100 mg capsule of CoQ10 daily, or even twice daily. The regular formulation is widely available on druggists' shelves. It's 'ubiquinone'. It's okay if that's all that sells on local shelves, but Costco and other places sell the better 'ubiquinol' formulation. It's more easily absorbed and used by the body.

You may wish to consider taking 200 mg daily of magnesium supplement, say the citrate or the big-glycinate formula. They are easily tolerated, easily absorbed, and help with both cardiac output and with muscle function in general.

Note that I am not advising or prescribing. I'm not qualified and don't know you. But if you run this past your primary caregiver, you may find that that person agrees, especially as a trial.