Is chlorophyll safe for someone with afib and taking metoprolol? i also take famotidine and benedryl for allergies?

Supplements like this are not tested by the FDA& all bets are off about presence of contaminants, proper dosing,interactions with prescription medications or claims of efficacy. Despite all this, I doubt it would affect your A fib, famotidine, Benadryl or metoprolol significantly, but I'd also check with your pharmacist who may have more information about chlorophyll. It's simpler to eat veggies.