Switching Between Brand-Name and Compounded GLP-1s: What to Know
People switch between brand-name and compounded GLP-1s for cost, insurance changes or supply. The molecule may be the same, but the product, the dose markings and the rules are not. This guide covers what to settle with your clinician before you switch in either direction.
Why People Switch
- Cost: brand-name self-pay prices fell in 2025 and 2026, so some people on compounded drugs now find brand-name options affordable, and vice versa.
- Insurance: a new plan may cover Wegovy or Zepbound, or stop covering them.
- Regulation: since the shortages ended, compounded versions are limited to patient-specific prescriptions, and some providers have changed what they offer.
- Form: oral options (Wegovy pill, Foundayo) are now available for people who don't want injections.
Same Molecule Is Not the Same Product
Compounded semaglutide and tirzepatide are prepared by compounding pharmacies, usually in multi-dose vials with their own concentration. Brand-name Wegovy and Zepbound come in fixed-dose pens or vials made to FDA-approved specifications. The FDA has received reports of people taking several times their intended dose of compounded semaglutide after confusing units, milligrams and milliliters, so dose labeling is the single most important thing to get right when you switch.
Questions to Settle Before You Switch
- What dose will I start on in the new product, in milligrams, and how many milliliters (or which pen strength) is that?
- Should I restart at a lower dose? Prescribing information for Wegovy and Zepbound includes guidance on missed doses and restarting after a gap, and your clinician will use it.
- When should the last dose of the old product be, and when the first dose of the new one, so there is no overlap?
- If I'm switching molecules (semaglutide to tirzepatide or the reverse), what is the plan? They are different drugs with different dose ranges, and there is no fixed conversion.
- Who fills the new prescription, and how long does shipping or prior authorization take?
Brand-Name Dose Steps for Reference
| Product | Available strengths |
|---|---|
| Wegovy pen (weekly) | 0.25, 0.5, 1, 1.7 and 2.4 mg; Wegovy HD 7.2 mg |
| Wegovy pill (daily) | 1.5, 4, 9 and 25 mg |
| Zepbound (weekly, KwikPen or vial) | 2.5, 5, 7.5, 10, 12.5 and 15 mg |
| Foundayo (daily pill) | 0.8, 2.5, 5.5, 9, 14.5 and 17.2 mg |
Strengths are listed so you can read your prescription, not to suggest a dose. Prices for each strength through the manufacturers are in our self-pay price guide.
Check the Cost of the New Option First
At our October 21, 2026 check, brand-name maintenance doses bought directly from the manufacturers cost $349 a month (Wegovy pen), $299 (Wegovy pill 25 mg or Foundayo at higher doses) and $449 (Zepbound, refilled within 45 days). Compounded programs ranged from under $100 to about $300 a month at maintenance doses. Telehealth programs that prescribe brand-name drugs often add a membership of $74 to $199 a month.
Practical Tips
- Don't cancel your current provider until the new prescription is approved and shipped.
- Keep a record of your current product, dose, concentration and last injection date to share with the new prescriber.
- If your insurance requires prior authorization, start that process early; it can take days to weeks.
- Ask the new provider how to reach a clinician about side effects in the first weeks after the switch.