Adverse Cardiovascular and Central Nervous System Events Associated with Dietary Supplements Containing Ephedra Alkaloids
NEJM 343:1833-1838,1886, Haller,C.A. & Benowitz,N.L., 2000
Postural Hypotension:Adrenergic Responsivity, & Levodopa Therapy
Neurol 27:921, Corder,C.N.,et al, 1977