ive been on minoxidil 5% and minoxidil 5% with retonoic acid for about a month and a half. i didnt have any problems for the first month..but for the last week or so ive been noticing a faster heartbeat. do you guys think i should lower the amount of minoxidil i put on my head? i put about 1- 1.5 mL each time. or should i drop it all together?