Compounded GLP-1 vs Wegovy and Zepbound: What Is Different

Brand-name Wegovy and Zepbound and their compounded versions share an active ingredient, semaglutide or tirzepatide, but they are not the same product. The difference matters for safety, legality and price.

What compounded means

A compounded drug is prepared by a licensed pharmacy for one patient's prescription. It is not an FDA-approved drug and not a generic. FDA does not review compounded drugs for safety, effectiveness or quality before they are sold, and FDA says compounded drugs should only be used when a patient's medical needs cannot be met by an FDA-approved drug.

What changed in 2025 and 2026

• Shortages ended: FDA declared the tirzepatide and semaglutide shortages resolved in 2025, so shortage-based compounding of copies of the approved injections has ended.
• 503B proposal: on April 30, 2026, FDA proposed not to include semaglutide, tirzepatide or liraglutide on the list of bulk ingredients that large outsourcing facilities may compound with, finding no clinical need. FDA took comments through June 29, 2026 before a final decision.
• Compounding for an individual patient by a state-licensed pharmacy continues under the conditions federal law sets, which is how most online programs, including T-TIME, supply these drugs.

Safety concerns FDA has raised

• Dosing errors: FDA received reports of adverse events, some needing hospital care, linked to patients or clinicians measuring the wrong dose of compounded injections.
• Fake pharmacies: some compounded products carried the name of a pharmacy that does not exist or did not make them.
• Salt forms: semaglutide sodium and semaglutide acetate are different ingredients from the one in the approved drugs, and FDA knows of no lawful basis to compound with them.
• Storage: injectable GLP-1s need refrigeration, and FDA has received complaints of products arriving warm.
• Reports: as of May 31, 2026, FDA had received 990 adverse event reports for compounded semaglutide and more than 730 for compounded tirzepatide. Many look like the known side effects of the approved drugs.

FDA's red flags for online sellers

• Claims that a compounded drug is the same as an FDA-approved one.
• Prices that seem too good to be true.
• No screening or prescription by a licensed clinician.
• No clinician available to answer questions after delivery.
• Products sold for research purposes or not for human consumption. Retatrutide and cagrilintide cannot legally be compounded at all.

Effectiveness: what the trials tested

The large trials tested the brand-name injections: semaglutide 2.4 mg led to 14.9% average weight loss in STEP 1, tirzepatide 15 mg led to 20.9% in SURMOUNT-1, and in the SURMOUNT-5 head-to-head trial tirzepatide beat semaglutide, 20.2% vs 13.7% at 72 weeks. Wegovy also cut major heart events by 20% in people with heart disease in the SELECT trial. None of these results were shown for compounded versions, and dissolving tablets are a different formulation whose doses are not interchangeable with injections.

Price: the main reason people choose compounded

On November 2, 2026, self-pay Wegovy cost $149 to $299 a month as a pill and $349 a month as a pen, and Zepbound cost $299 to $449 a month. Compounded semaglutide from online programs ranged from $99 a month at T-TIME to $297 a month at Henry Meds month to month. Our GLP-1 cost breakdown has the yearly totals.

How to choose

• If insurance covers Wegovy or Zepbound, use it: Wegovy or Zepbound can cost as little as $25 a month with the maker's savings card.
• If you want the exact product tested in the trials, buy the brand through a manufacturer self-pay program.
• If cost rules out the brand, choose a clinician-led compounded program that names its pharmacy partners, is clear that its drug is compounded, prescribes by dose and keeps follow-up open. T-TIME, our top pick for value, meets those tests and lists its pharmacy partners publicly.

Where to go next: Compare programs in our GLP-1 guide for men, or read about GLP-1 side effects in men.

FAQ

Is compounded semaglutide legal?

Yes, when a state-licensed pharmacy prepares it for an individual prescription under the conditions federal law sets. It is not legal to sell it as Wegovy or Ozempic, or as a research chemical for people to inject.

Is compounded semaglutide as effective as Wegovy?

It has not been tested in the trials that proved Wegovy works, so no one can say it performs the same. It uses the same active ingredient, and real-world results depend on the dose and quality of the preparation.

Are oral semaglutide tablets the same as the Wegovy pill?

No. The Wegovy pill is an FDA-approved tablet. Compounded dissolving tablets are a different formulation, and their doses cannot be converted from injection or brand-pill doses.