Yes very sleepy
Yes, just like any other opiate it can cause drowsiness in some people.
Penicillin is an antibiotic taken to prevent an infection, not cause it.
Flexeril brand of cyclobenzeprine is a muscle relaxant. Penicillin is an antibiotic. Those drugs generally do not interact with each other, so allergies to one will usually not cause any problems in the other. However ... you could be allergic to BOTH drugs ... it does happen
In general, drowsiness is feeling the need to sleep. Or many of these are known to cause fatigue and daytime drowsiness.
no, but they do cause pimples
Ultram can cause drowsiness.
Yes.
sometimes
Yes penicillin dose cause hypertension for life; it is common knowledge
It is possible that birth control can cause drowsiness. If this is a persistent issue it is best to consult a health care provider.
High altitudes do cause drowsiness because there is less oxygen in the air, so you can't breathe normally.