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Amlodipine Besylate Vs Amlodipine

Amlodipine Besylate Vs Amlodipine

Drug Class

Calcium Channel Blocker
Calcium Channel Blocker

Brand Name

Norvasc (most common brand)
Amlodipine (generic)

Active Ingredient

Amlodipine
Amlodipine

Salt Form

Besylate Salt
Direct Amlodipine (no salt form)

Indications

Hypertension, Angina Pectoris
Hypertension, Angina Pectoris

Mechanism of Action

Inhibits calcium ion influx into vascular smooth muscle and cardiac muscle, relaxing and dilating blood vessels
Same as Amlodipine Besylate

Dosing Frequency

Once daily
Once daily

Formulation

Oral tablets, typically 2.5 mg, 5 mg, 10 mg
Oral tablets, typically 2.5 mg, 5 mg, 10 mg

Half-life

30-50 hours (due to the besylate salt)
30-50 hours

Absorption

60-80% of the dose is absorbed orally
60-80% of the dose is absorbed orally

Bioavailability

Approximately 64-80%
Approximately 64-80%

Metabolism

Primarily metabolized in the liver by cytochrome P450 3A4
Primarily metabolized in the liver by cytochrome P450 3A4

Excretion

Mainly through the urine
Mainly through the urine

Side Effects

Common: Edema, dizziness, flushing, headache, fatigue
Same as Amlodipine Besylate

Contraindications

Severe hypotension, shock, aortic stenosis
Severe hypotension, shock, aortic stenosis

Drug Interactions

Can interact with other antihypertensive agents, cyclosporine, and others
Can interact with other antihypertensive agents, cyclosporine, and others

Pregnancy Category

Category C
Category C

Cost

Generally more expensive (due to brand)
Typically cheaper (generic)

Generic Availability

Yes, generic forms are available (Amlodipine Besylate)
Yes, generic forms are available (Amlodipine)
Coupon
Coupon Code
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Coupon Code
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Frequently Asked Questions

Is there a difference between Amlodipine and Amlodipine Besylate?

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Amlodipine is the active drug, while Amlodipine Besylate is its salt form. The besylate helps the medicine dissolve and absorb properly. Both provide the same therapeutic effect for lowering blood pressure.

Can Amlodipine and Amlodipine Besylate be used interchangeably?

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Yes, they are generally used interchangeably. Since the active ingredient is the same, switching between them usually does not change how the medicine works. However, always follow your doctor's instructions.

Why do some labels say Amlodipine and others Amlodipine Besylate?

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Drug labels may list either name depending on how the product is manufactured. Both refer to the same medication, but "Amlodipine Besylate" includes the full chemical form.

Does Amlodipine Besylate have different side effects than Amlodipine?

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No, the side effects are the same. Since Amlodipine is the active drug in both forms, the risk of side effects like swelling, dizziness, or flushing does not change.

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