Hello, I have a question re "other the counter medications" (OTC) and their interactions with PD meds. Here is the experience my husband had to prompt this question. My husband and son went to Mexico and while there he developed a cold. He took a Alka Seltzer PM cold medicine tablet. After a few hours he was feeling quite light headed and could barely stand. His son looked at the Alka Seltzer box warnings and besides other medical conditions, it said that if you had Parkinson's Disease you should consult your physician before taking this product. They were in a tiny village, but he was lucky to get to a small a hospital where they hooked him up to an IV for a couple of days as his blood pressure was dangerously low. I can't be sure if this medication caused it because there could have been other variables involved, (such as dehydration, etc.) but it is very easy to suspect that it was the cause from the warning on the box!? This prompted me to conduct a survey at our local drug store, and I saw many OTC medications, such as some cold medicines and cough syrups which also had this message of caution for PD'ers. Is it true that eldepry is an MAO type B inhibitor? Is this the cause for the bad reaction to some OTC medicines? or is it something else, like Sinemet? Also, I have concern regarding melatonin (KAL brand), on the bottle we have it indicates that if you are taking an MAO inhibitor (doesn't say if it is type A or B) that you should talk to your physician before taking it. Is it not safe for PD'ers too? I tried to get an answer from Sandoz, but they didn't have one. Any info on this would be greatly appreciated. From this experience, I suggest that everyone READ the small print on those OTC meds! Thank you. Wendy Santa Fe, NM [log in to unmask] (CG John 69 +9)