Well come to HCM Seizure attack could come around even without the medicine rubbing alcohol is just coincidence, different societies have different methods for seizure attack to wake the patient, but as a matter of fact this is not fact, because if nothing can be done then also patient would come to normal once the episode overs, the main concern would be tongue bite and fall from height, drawing, fire, its all, the medicine is given for to control the episode that it may not happen again, if you do have frequent episodes then is advisable to have the drug because convulsion is not good for fetus, more dangerous than the side effects of antiepileptic drugs, take care.