So it turned out that the cough medicine was not to blame. I simply took Dexedrine (amphetamine) in the wee hours of the morning due to a mix-up. I meant to take Levoxyl. Both medicine bottles were in the same plastic box. I have since removed Dexedrine. I do not plan to take it anymore.

But I am still having a pretty low appetite and my weight has "fluctuated down" a bit . I prefer not to be overly optimistic about it.