Table 2.

Updated clinical classification of PAH

Definite	Possible	Likely	Unlikely
Aminorex	Cocaine	Amphetamines	Oral contraceptives
Fenfluramine	Phenylpropanolamine	l-Tryptophan	Estrogen
Dexfenfluramine	St. John's wort	Methamphetamines	Cigarette smoking
Toxic rapeseed oil	Chemotherapeutic agents	Dasatanib
Benfluorex	Interferon-α and -β
SSRIs	Amphetamine-like drugs

SSRI, selective serotonin reuptake inhibitors.