Does Amlodipine Cause Gum Overgrowth?
Yes, amlodipine, a calcium channel blocker used for high blood pressure and angina, can cause gingival hyperplasia (gum overgrowth) as a known side effect. This occurs in 1-10% of patients, typically after months of use, and involves excessive gum tissue growth that can cover teeth and complicate oral hygiene.[1][2]
How Common Is It and Who Gets It?
Gum overgrowth affects about 3-20% of amlodipine users in clinical reports, more often in men, younger adults, and those with poor oral hygiene or pre-existing gum disease. It starts as gum swelling between teeth and can progress to cover crowns if untreated.[1][3]
Why Does Amlodipine Trigger This?
Amlodipine blocks calcium entry into cells, disrupting fibroblast activity in gums and leading to collagen buildup. Dihydropyridine types like amlodipine (and felodipine or nifedipine) are most linked, unlike other blood pressure drugs.[2][4]
How Does It Compare to Other Blood Pressure Meds?
| Drug Class | Gum Overgrowth Risk |
|------------|---------------------|
| Amlodipine (dihydropyridine CCB) | Moderate (up to 20%) |
| Nifedipine (older CCB) | High (up to 38%) |
| ACE inhibitors (e.g., lisinopril) | Rare |
| Beta blockers (e.g., metoprolol) | Very rare |
| Phenytoin (seizure med) or cyclosporine (immunosuppressant) | High (non-blood pressure drugs with similar effect) |
Switching to a non-dihydropyridine CCB like diltiazem often resolves it.[1][3]
What Do Patients Notice and When?
Symptoms appear 1-3 months after starting, worsening over 6-12 months: tender, bleeding gums that bleed easily and trap food. It reverses in 1-6 months after stopping or switching drugs, faster with dental cleaning.[2][4]
How to Manage or Prevent It?
- Maintain rigorous oral hygiene: brush twice daily, floss, use antiseptic rinses.
- See a dentist every 3 months for scaling and root planing.
- Dose reduction or drug switch (e.g., to ACE inhibitor) if severe.
- In rare cases, surgery removes excess tissue.[1][3]
When to See a Doctor?
Consult if gums swell, bleed persistently, or interfere with chewing—early intervention prevents progression. Not all users get it, and risks drop with good dental care.[2]
[1]: Mayo Clinic - Amlodipine Side Effects
[2]: NCBI - Drug-Induced Gingival Overgrowth
[3]: American Dental Association - Calcium Channel Blockers and Gingival Hyperplasia
[4]: Drugs.com - Amlodipine Side Effects