Gingival hyperplasia is a recognized side effect of which class of antihypertensive medication?

Calcium channel blockers — including amlodipine and the more classically cited nifedipine — are a recognized cause of drug-induced gingival hyperplasia/overgrowth, alongside phenytoin (an anticonvulsant) and cyclosporine (an immunosuppressant), forming the classic three-drug-class list for this side effect.