Approved for 1 INDICATIONS AND USAGE Phenylephrine Hydrochloride Ophthalmic Solution, USP 2.5% and 10% is indicated to dilate the pupil. Phenylephrine Hydrochloride Ophthalmic Solution, USP 2.5% and 10% is an alpha-1 adrenergic receptor agonist indicated to dilate the pupil (1 ).. 12.1 Mechanism of Action Phenylephrine is an alpha-1 adrenergic receptor agonist used for dilation of the pupil due…
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