BACKGROUND The administration of several classes of drugs; anticonvulsants, immunosuppressants, and calcium channel blockers can cause gingival enlargement. The aim of the present study was to evaluate the frequency and severity of gingival enlargement in patients taking calcium channel blocker drug amlodipine. METHODS This descriptive cross-sectional study was conducted on 250 patients who visited the dental hospital at Nepal Medical College between November 2021 to April 2022. Using the Bokenkamp and Bornhorst Index, the patients who had been on amlodipine for at least three months were examined for gingival enlargement. Along with gingival and plaque index, medication dosage and duration were also assessed. RESULTS The prevalence of gingival enlargement was 37%. Grade 1 gingival enlargement was present in 18% while grade 3 was seen in only 2%. Both individuals taking amlodipine alone and in combination with other antihypertensive drugs showed the same level of gingival enlargement. The dose and duration of amlodipine ingestion showed a significant correlation with the enlargement. The gingival and plaque index also showed a strong correlation with overgrowth. CONCLUSIONS The physicians prescribing amlodipine should well inform the patients about the potential side effects. In such cases, the maintenance of oral hygiene should be prioritized from the beginning. In severe cases, substitution of the drugs followed by oral therapeutic measures should be considered for complete regression.