Gastrointestinal side-effects (nausea, vomiting, diarrhoea) are common; the delayed-release formulation is meant to help overcome this problem. It is also a cause of drug-induced hepatitis. Patients with glucose-6-phosphate dehydrogenase deficiency should avoid taking<unk>  acid as it causes haemolysis. Thyroid goitre is also a side-effect because<unk>  acid inhibits the synthesis of thyroid hormones. Drug interactions include elevated phenytoin levels. When taken with rifampicin, the levels of rifampicin in the blood fall by about half. The U.S. Food and Drug Administration (FDA) assigned<unk>  to pregnancy category C, indicating that it is not known whether it will harm an unborn baby.
4-Aminosalicylic acid
Quinine
Salicylic acid
Trenbolone hexahydrobenzylcarbonate
Pyrimethamine
Pentamidine
Artemisinin
Phenpromethamine