👉 Methicillin is a type of antibiotic that was developed by the German scientist Hans Bethe in 1928. It is used to treat infections caused by bacteria like Staphylococcus aureus, which can cause severe diseases such as sepsis (a life-threatening condition). The drug works by killing the bacteria and preventing them from reproducing. Methicillin has been a staple of hospital medicine for over 100 years, but it is not widely used anymore