PAS (Para-aminosalicylic acid or PASER); PAS-sodium (Para-aminosalicylic acid sodium)
PAS was discovered in 1944. Initially, PAS was used to treat TB, but with the discovery of other more potent drugs including rifampicin, its use in first line regimens was discontinued. PAS is still useful as part of a treatment regimen for XDR TB although its benefit is limited and it is extremely toxic.
Read More →