hydroxyamphetamine hydrobromide /hīdrok′sē·əmfet″əmēn/ , an adrenergic agonist. ▪ INDICATIONS: It is prescribed for short-term dilation of the pupil for ophthalmoscopy and as a diagnostic aid in Horner’s syndrome. ▪ CONTRAINDICATIONS: Narrow-angle glaucoma or known hypersensitivity to this drug prohibits its use. ▪ ADVERSE EFFECTS: Among the more serious adverse effects are increased intraocular pressure and photophobia.