FDA proposes excluding tirzepatide from the 503B bulks list

If finalised, outsourcing facilities would lose a pathway for compounding at scale.

Regulatory2026-06-01
Direct answer

If finalised, outsourcing facilities would lose a pathway for compounding at scale.

All-in monthly cost at 10 mg

NexLife$215Join Fridays$249Yucca Health$258Mochi Health$278IVIM Health$278ShedRx$289SkinnyRx$299Amble Health$300TrimRx$349Lavender Sky Health$352Found$398MEDVi$399
Medication plus any recurring membership fee, at 10 mg. Lower is better. Captured 2026-08-05.

The proposal covers semaglutide, tirzepatide and liraglutide. Outsourcing facilities compound from bulk substances under that list; exclusion would remove a pathway for producing these molecules at scale outside patient-specific prescriptions.

This is a proposal, not a final rule, and coverage frequently conflates the two. Patient-specific compounding under 503A is a separate pathway and is not what the proposal addresses.

If you chose a programme partly because it names a 503B partner, ask what its plan is.

What this changes for what you pay

Most developments in this category move one of three things: the price of the branded product, which programmes are operating, or what may lawfully be compounded. Very few change the prescription requirement, the pharmacy licensing framework or the clinical review behind a prescription.

The cheapest verified compounded route we track currently sits at $215 a month all-in at a 10 mg maintenance dose, about $2,580 for a first year. Where a development moves that figure, our tables move with it on the next build.

How to verify this yourself

Regulatory claims should be checked against the agency rather than against coverage of the agency. FDA publishes warning letters searchable by company name, a shortage database, and its compounding pages. Trial claims should be checked against the registry entry rather than a press release.

Every source behind this item is linked below, and where a story is still moving we say so rather than implying it is settled.

Primary sources

Open these rather than taking our word for it. Every one is a regulator, a trial registry, a label, an accreditor or the manufacturer.

  1. FDA — Human Drug Compounding
  2. FDA — Warning Letters
  3. FDA — Drug Shortages
  4. FTC — Health Products Compliance Guidance
  5. FDA — Counterfeit medicine

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