Pronunciation: meth'i-sil'in so'de-um
A semisynthetic penicillin salt for parenteral administration; restriction of its use to infections caused by penicillin G-resistant staphylococci is recommended; it is less effective than penicillin G in infections caused by hemolytic streptococci, pneumococci, gonococci, and penicillin G-sensitive staphylococci.
Synonym(s): sodium methicillin
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Examples: glitazone, GI cocktail, etc.