Sorry for the delay Pinsara but I forgot to look the information up.
Erythromycin is a macrolide for infections and infestations. This is a class of antibiotics characterised by molecules made up of large-ring lactones
Most common is probably E-Mycin which is erythromycin ethyl succinate.
Amoxycillin is most commonly prescribed as Augmentin (Amoxycillin is a generic name, Augmentin is a brand name,one of several. Different companies produce different brand names for the same thing). This is amoxycillin and clavulanic acid. It is a penicillin. Also for infections and infestations.
Apo-Amoxi, Ibiamox and Ospamox are all just amoxycillin.
Synermox and Augmentin are both amoxycillin and clavulanic acid.
Clavulanic acid is aluminium hydroxide and used to reduce acidity in the stomach (ie. it helps the medicine go down )
I guess both would work but can't guarantee that. I have only ever tried erythromycin which worked well.