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Classification of drugs and toxins associated with pulmonary arterial hypertension
| Definite | Possible |
| Aminorex | Cocaine |
| Fenfluramine | Phenylpropanolamine |
| Dexfenfluramine | L-tryptophan |
| Benfluorex | St John’s wort |
| Methamphetamines | Amphetamines |
| Dasatinib | Interferon alpha and beta |
| Toxic rapeseed oil | Alkylating agents |
| Bosutinib | |
| Direct-acting antiviral agents against hepatitis C virus | |
| Leflunomide | |
| Indirubin (Chinese herb Qing-Dai) |
