What Is Amlodipine?

Amlodipine is a calcium channel blocker (dihydropyridine class) used to treat high blood pressure (hypertension), chronic stable angina, and vasospastic (Prinzmetal's) angina. It is also prescribed to reduce the risk of hospitalization for angina and coronary revascularization in patients with coronary artery disease.

Originally marketed as Norvasc by Pfizer, Amlodipine has been available as an affordable generic since 2007. It is FDA-approved for adults and children ages 6 and older for hypertension. It is taken once daily, with or without food, making it a convenient option for long-term blood pressure management.

Amlodipine is also sometimes used off-label for Raynaud's phenomenon and migraine prevention.

How does Amlodipine work?

Amlodipine works by blocking L-type calcium channels in the smooth muscle cells of blood vessels and in cardiac muscle. By preventing calcium from entering these cells, Amlodipine causes blood vessels to relax and widen (vasodilation). This reduces peripheral vascular resistance, which lowers blood pressure.

For patients with angina, Amlodipine increases blood flow and oxygen delivery to the heart muscle by dilating coronary arteries and reducing the workload on the heart. Its long half-life (30–50 hours) allows for once-daily dosing and provides smooth, 24-hour blood pressure control.

What doses are available for Amlodipine?

• Oral tablets: 2.5 mg, 5 mg, 10 mg
• Oral suspension (Katerzia): 1 mg/mL
• Oral solution (Norliqva): 1 mg/mL
• Powder for oral solution (Sdamlo): 2.5 mg, 5 mg, 10 mg

The most commonly prescribed strengths are 5 mg and 10 mg tablets. Adults typically start at 5 mg once daily, while elderly patients and those with liver impairment usually start at 2.5 mg. Children ages 6–17 typically take 2.5–5 mg once daily.

How hard is it to find Amlodipine in stock?

Amlodipine is one of the most widely prescribed medications in the United States, with generic versions available from numerous manufacturers since the Norvasc patent expired in 2007. As of 2026, single-ingredient Amlodipine tablets are not on the FDA drug shortage list and are readily stocked at virtually all retail, mail-order, and online pharmacies.

Because Amlodipine is a high-volume generic with multiple manufacturers, supply is robust and consistent. Patients should have no difficulty finding this medication at their local pharmacy. The only related supply issue has been with the combination product Amlodipine/Benazepril, which experienced some manufacturer discontinuations in 2025 — but single-ingredient Amlodipine remains widely available.

Who Can Prescribe Amlodipine?

Amlodipine is commonly prescribed by a wide range of healthcare providers, including:

• Primary care / Family medicine physicians — the most common prescribers for routine hypertension management
• Internal medicine doctors
• Cardiologists — for angina, coronary artery disease, or complex hypertension
• Nephrologists — for hypertension related to kidney disease
• Geriatric specialists
• Nurse practitioners and physician assistants

Amlodipine is also widely available through telehealth platforms including Teladoc, MDLive, PlushCare, and others, since prescribing it requires only standard blood pressure monitoring.

Is Amlodipine a controlled substance?

No. Amlodipine is not a controlled substance and has no DEA scheduling. It has no potential for abuse or dependence. Prescriptions can be called in, faxed, or sent electronically, and refills can be obtained without restrictions. It is available at any pharmacy without special handling requirements.

Common Side Effects of Amlodipine

• Peripheral edema — Swelling of the ankles and feet is the most common side effect, affecting up to 10% of patients at the 10 mg dose
• Dizziness — Especially when first starting or increasing the dose
• Flushing — Warmth or redness in the face
• Fatigue
• Nausea and stomach pain
• Drowsiness
• Palpitations — Feeling your heartbeat

Serious side effects (seek immediate medical attention):

• Worsening chest pain or heart attack when first starting or increasing the dose
• Severe hypotension (very low blood pressure)
• Allergic reaction — hives, difficulty breathing, swelling of face/lips/tongue/throat
• Severe dizziness or feeling like you might pass out

Alternative Medications to Amlodipine

If Amlodipine isn't right for you, your doctor may consider these alternatives:

• Nifedipine (Procardia, Adalat) — Another dihydropyridine calcium channel blocker, available in immediate-release and extended-release formulations
• Felodipine (Plendil) — A dihydropyridine CCB in extended-release form; may offer good long-term blood pressure control
• Diltiazem (Cardizem, Tiazac) — A non-dihydropyridine calcium channel blocker that also helps with heart rate control; different side effect profile
• Lisinopril (Prinivil, Zestril) — An ACE inhibitor; a completely different drug class commonly used as a first-line treatment for hypertension
• Losartan (Cozaar) — An ARB (angiotensin receptor blocker) that may be preferred for patients who develop a cough with ACE inhibitors

Always talk to your healthcare provider before switching medications. The best choice depends on your specific health conditions, other medications, and individual response.

Drug Interactions with Amlodipine

Amlodipine can interact with several medications and substances:

• Simvastatin — Must be limited to 20 mg/day when taken with Amlodipine due to increased risk of muscle damage (myopathy/rhabdomyolysis)
• Cyclosporine — Amlodipine may increase cyclosporine blood levels; monitoring required
• CYP3A4 inhibitors (ketoconazole, itraconazole, clarithromycin) — May increase Amlodipine levels and side effects
• CYP3A4 inducers (rifampin, St. John's Wort) — May decrease Amlodipine effectiveness
• Other blood pressure medications — Additive blood pressure lowering; monitor for low blood pressure
• PDE-5 inhibitors (sildenafil/Viagra, tadalafil/Cialis) — Risk of additive hypotension
• Grapefruit/grapefruit juice — May modestly increase Amlodipine levels
• Alcohol — Additive blood pressure lowering and increased side effects

Always inform your doctor and pharmacist of all medications, supplements, and herbal products you take.

Final Thoughts on Amlodipine

Amlodipine is one of the most accessible and affordable blood pressure medications available today. As a widely manufactured generic with no active shortages, it is easy to find at virtually any pharmacy. With prices as low as $4 per month through programs like Walmart's $4 generic list, GoodRx, and SingleCare, cost is rarely a barrier.

Its once-daily dosing, proven safety record, and effectiveness for both hypertension and angina make it a cornerstone of cardiovascular treatment. If you're having trouble affording your prescription, check medfinder.com for the latest pricing and pharmacy availability in your area.