Thanks for writing us.
You told metabolism
booster but name not mentioned??
Metabolism booster itself will increase the heart rate
She should undergo first ECG testing to document the heart rate, type of tachycardia
and after that blood test
like thyroid profile to evaluate the cause..
Excessive fast heart rate should be slowed down otherwise will weak the heart by producing Tacchycardiomyopathy..
I will be happy in helping you after getting reports