Antibiotic used to treat stuff like respiratory tract
infections, middle ear infections, and skin infections . A doctor at the University of South Florida Student Health Center told me that it makes close to a third of people nauseated (I'm one of them). Supposed to be taken on an empty stomach unless it upsets your stomach; then you can take it with food (which was merely a waste of food in my case).

Erythromycin binds to the 50S subunit (which is the larger part of a ribosome) and inhibits translocation in prokaryotes.
In other words: this macrolide (meaning: containing a macrocyclic lactone ring) antibiotic prevents bacteria from making proteins by preventing the molecule carrying the aminoacid (tRNA) to connect to the mRNA chain.

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