Beta lactam antibiotics include penicillins and cephalosporins. Penicillin G is a commonly used penicillin that treats streptococcal infections with doses of 0.5-5 million units given intramuscularly or intravenously for 7-10 days.

1. Beta Lactam AntibioticsBeta Lactam Antibiotics
PenicillinsPenicillins
CephalosporinsCephalosporins

2. PenicillinPenicillin

3. Benzyl Penicillin/Penicillin GBenzyl Penicillin/Penicillin G

6. Uses of PGUses of PG
Streptococcal infections - 0.5 – 5MUStreptococcal infections - 0.5 – 5MU
im/iv – 7-10 daysim/iv – 7-10 days