Drug

Phentolamine Mesylate

4 flagged reaction(s) · 59 total co-reports · max PRR 168.1

Important: Reactions below are the flagged terms from this drug’s FAERS report history (min. 3 co-reports per term) — PRR/ROR indicate disproportionality in spontaneous reporting, not causation. Data from FDA FAERS via openFDA. Last recalculated: 2026-09-14.

	Reaction	Co-reports (a)	PRR	ROR	Signal
1	Neutrophil Count Increased	13	168.1	183.0	signal
2	Blood Urea Increased	14	110.4	121.1	signal
3	Lymphocyte Count Decreased	12	90.1	97.4	signal
4	Ocular Hyperaemia	20	56.8	64.9	signal