Beta blocker
From SNPedia
Beta blockers are medicines used to treat hypertension (aka high blood pressure), and in some cases, migraines.
Specific ones include Bucindolol, Bisoprolol, Metoprolol, and Carvedilol.
Patient genotypes at SNPs rs1801252 and rs1801253 appear to influence how well beta blockers lower blood pressure.
[PMID 18784654] CYP2D6*4 homozygotes taking a beta blocker like metoprolol are at 4x increased risk for bradycardia; see rs3892097? for more details
