Dear friend, welcome to HCM!
Your cramping etc. is all due to excess theoasthalin/ asthalin+ salmeterol
This is not advisable.
Continue only Seroflo
in minimum required dosage daily to control symptoms.
drop is not explained.
Please verify if you have other concomittent heart and other disorders.
Do you get swollen legs/ankles?
Associated heart failure
should be sought.
Recheck your levels after a week and see.
Take care and please keep me informed of your progress.
I hope to have answered your query satisfactorily.