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KAPVAY vs METHYLDOPA

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 23, 2026·How we rate

Possible drug interaction. KAPVAY and METHYLDOPA are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

kapvaymethyldopa

Rating

New
70/100

Pharmacy pays

~$1.05 /30
~$225.00 /30

Type

RX
RX

Active ingredient

CLONIDINE HYDROCHLORIDE
METHYLDOPA

Manufacturer

Concordia
Heritage Pharma

Dosage forms

Tablet, extended release
Tablet

Drug class

Central Alpha-2 Adrenergic Agonist
Central Alpha-2 Adrenergic Agonist

Boxed warning

None
None

Half-life

about 12 to 16 hours
about 105 minutes (roughly 1.75 hours)

Treats

Attention Deficit Disorder with Hyperactivity, Diarrhea, Dysmenorrhea
Hypertension

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Frequently asked questions

Which is cheaper, Kapvay or Methyldopa?

Kapvay costs pharmacies less to acquire — about $1.05 vs $225.00 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Kapvay and Methyldopa?

Kapvay contains Clonidine Hydrochloride, while Methyldopa contains Methyldopa — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.