Eyebrows and eyelashes falling out on Spironolactone?

I've been on it for 25 days at originally 50 mg/day but I cut it back to 25 yesterday. My acne has improved and skin is softer. But since week 2, my eyebrows and lashes have begun to fall out VERY easily. I lose at least 1 hair from each brow per day, and a few lashes a week...brows are naturally thick/coarse. Also, I didn't get a normal period this week, just brown spotting. Is this a sign of Spiro causing a hormone imbalance, like estrogen dominance? Thanks.

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