Why do quoted GLP-1 prices vary so much?

Because the quotes are not measuring the same thing. A membership fee, a per-vial price, and a per-pen price all describe different quantities, and the dose you are on determines how long that quantity lasts. Converting everything to cost per milligram is the only way to compare them directly.

Does insurance usually cover this?

Coverage is far more common for type 2 diabetes indications than for weight management. Whether your specific plan covers your specific indication is something only your plan documents can answer.

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Does medicare cover GLP-1

You are trying to work out what this will cost you per month.

Reference and calculator, not medical advice. Dosing figures below are transcribed from FDA-approved prescribing information and link back to it. Last reviewed August 2026.

Medicare has a structural rule here that no amount of shopping around changes: Part D was written with a statutory exclusion for drugs used for weight loss. That exclusion is about the purpose the drug is prescribed for, not the drug itself, which is why the answer depends entirely on the indication on your prescription.

The practical consequence is that a GLP-1 prescribed for type 2 diabetes sits in an entirely different position from the same molecule prescribed to reduce weight. Where a product carries an additional approved indication — cardiovascular risk reduction, for instance, which appears on the Wegovy label — that indication is a separate question again.

Side-by-side

Structural facts from each product’s prescribing information.

Product	Active ingredient	Indication	Frequency	Start	Max labelled	Steps to max
Ozempic Novo Nordisk	Semaglutide	Type 2 diabetes	Weekly	0.25 mg	2 mg	4
Wegovy Novo Nordisk	Semaglutide	Weight management	Weekly	0.25 mg	2.4 mg	5
Mounjaro Eli Lilly	Tirzepatide	Type 2 diabetes	Weekly	2.5 mg	15 mg	6
Zepbound Eli Lilly	Tirzepatide	Weight management	Weekly	2.5 mg	15 mg	6

What this page will not do is tell you what your specific Part D plan does in the current year. Plan formularies are set annually and vary between plans in the same region; the rules around this area have also moved more than once. Check your own plan's formulary for the year you are in, and confirm the indication with the prescriber writing it.

Common questions

Does Medicare Advantage change this?: Advantage plans include Part D drug coverage and are still bound by the same statutory framework, though supplemental benefits vary between plans. Your plan documents are the authority.
What about the manufacturer savings cards?: Those are generally unavailable to people on Medicare or Medicaid, which is a common and frustrating surprise. Manufacturer direct self-pay programmes are a separate thing and may be available.
Why is the indication such a big deal?: Because the exclusion is written around the use, not the substance. Two prescriptions for chemically identical drugs can land on opposite sides of it.

Where the price comes from

The routes people actually pay through, and what determines the number in each.

Manufacturer direct-pay program

Both Lilly and Novo Nordisk run self-pay programs for people without coverage. Pricing tiers change frequently — check the official program page for current rates.