What happens if you stop Compounded semaglutide or Zepbound?

Zepbound's label includes a trial that stopped the drug on purpose; Compounded semaglutide has no FDA label at all, which is a difference in what is known rather than in what happens. On Zepbound's label, the people randomly assigned to stop gained 14% of body weight over the following 12 months while those who carried on lost 5.5% more. That figure belongs to Zepbound's trial, so this page does not apply it to Compounded semaglutide.

Is Compounded semaglutide or Zepbound better for weight loss?

Only Zepbound has a trial figure recorded here: 20.9% average weight loss, from its own label trial. Compounded semaglutide has none on this site — a compounded preparation has no trial of its own, so the two cannot be compared on effect and this page does not pick one on it.

Can you switch between Compounded semaglutide and Zepbound?

They are different molecules, so this is a change of medication rather than of brand, and the one you move to is started on its own dosing schedule.

← All providers and medications

Compounded semaglutide vs Zepbound (tirzepatide)

Verdict

Zepbound is the better choice of the two, winning on regulatory and complaint risk and approved product or compounded copy (halfrx score 7.3 against 1.9). Compounded semaglutide is the one to pick if entry price matters more to you.

Computed from the stored fields, so it moves when a price does. Nothing here is written by hand or by a model.

Which is cheaper, Compounded semaglutide or Zepbound (tirzepatide)?

Compounded semaglutide is $129–$349 a month all-in, the range its sellers here charge, oldest read 2026-09-13; Zepbound (tirzepatide) is $299–$699, read from its own page on 2026-08-19. Every axis below is computed from stored fields rather than written by hand, so the comparison moves when a price does. They were last checked on 2026-09-13 and 2026-08-19. Flags recorded here: Compounded semaglutide — not FDA approved, supply risk. Zepbound (tirzepatide) is an FDA-approved product and Compounded semaglutide is a compounded copy made under the pharmacy-compounding exemption, which is a legal status rather than a quality claim. The published formula scores them 1.9 and 7.3 out of 10, arithmetic over the same stored fields rather than an editor's preference. Cost here is scored on what a patient pays once titrated, never on the entry price, because an introductory rate covers the months before anybody has reached the dose they stay on.

Head to head

Compounded semaglutide against Zepbound (tirzepatide), one row per axis, with the side that wins each axis marked.
What decides it	Compounded semaglutide $129–$349/mo	Zepbound $299–$699/mo
Entry priceCompounded semaglutide is $170/mo cheaper to start — $129 against $299.	✓ better here	—
Regulatory and complaint riskCompounded semaglutide: 2 serious flags. Zepbound (tirzepatide): none.	—	✓ better here
Approved product or compounded copyZepbound (tirzepatide) supplies an FDA-approved product; Compounded semaglutide supplies a compounded preparation, which the FDA does not review for safety, efficacy or quality and which can stop shipping if its pharmacy is enjoined.	—	✓ better here

Compounded semaglutide publishes no page halfrx will send you toGo to Zepbound ↗

What separates these two, price aside

These are different molecules — semaglutide against tirzepatide — so this is a comparison of two treatments, not of two prices for one.

503A/503B compounding pharmacies

Compounded semaglutide

1.9

$129–$349/mo all-in

checked 2026-09-13 — no maintenance-dose price

Not FDA approvedCompounding legal riskSupply risk

Eli Lilly

Zepbound (tirzepatide)

7.3

$299–$699/mo all-in

verified 2026-08-19

Price conditional on refill timingBoxed warning

Compounded semaglutide

Pros

+$129–$349 a month puts semaglutide within reach for people who would otherwise take nothing; branded semaglutide costs $299 a month for the Wegovy pill and $349 for the pens once past the starting doses.[1]
+Often shipped in vials with flexible dosing, so a provider can titrate in smaller steps than the fixed branded pen doses allow.[1]

Cons

−Not FDA approved. The agency does not review compounded drugs for safety, efficacy or manufacturing quality — potency and sterility depend entirely on the individual pharmacy.[1]
−The FDA declared the semaglutide shortage resolved, which removed the legal basis for mass compounding of copies. Providers now rely on 'personalized dose' arguments that Novo Nordisk is actively litigating.[2]
−Supply can stop mid-titration. A court order or state action against your compounder ends your prescription with no notice — in March 2025 Washington's Pharmacy Commission issued a limited stop-service order against Aequita, the Kirkland pharmacy that then supplied Mochi Health.[3]
−Some products are semaglutide salts (sodium or acetate) rather than the base molecule studied in trials. The FDA has warned these are different substances.[1]

Sources

Zepbound (tirzepatide)

Pros

+Highest average weight loss of any approved medication — around 20.9% at the 15 mg dose in SURMOUNT-1.[2]
+Dual GIP/GLP-1 agonist, a different mechanism from semaglutide, so it often works for people semaglutide failed.[2]
+$299/mo at the starting dose direct from Lilly against a $1,086 list price, with home delivery of vials or pens at the same price.[1]
+Also approved for obstructive sleep apnea, which can unlock insurance coverage that a weight indication alone would not.[2]
+If you are commercially insured with coverage, Lilly's card can bring it to as little as $25 a month.[1]

Cons

−Weekly injection with the usual GI side effects — nausea, vomiting, diarrhea and constipation are the common discontinuation reasons.[2]
−The advertised $449 ceiling is conditional. It holds only while you refill within 45 days; lapse once and 10 mg and above cost $699 — 56% more than the number in the advert.[1]
−Lilly defines a month as 28 days, so a year is 13 fills, not 12. At $449 that is $5,837 a year against the $5,388 that 'per month' implies — $449 of hidden annual cost.[1]
−$1,086 list price if you have no coverage and do not use LillyDirect self-pay.[1]
−Weight regain after stopping is the documented norm, so the cost is ongoing rather than a course.[2]
−2.5 mg is a starting dose and is not approved for maintenance, so the $299 headline is a price nobody stays on.[1]

Sources

Zepbound side effects →Zepbound dosage →

Comparisons are computed from the fields on each card, not written by hand or by a model, so they change when the data does. Information only, not medical advice. halfrx may earn a commission from some links, which never changes what a comparison says.

Everything on Compounded semaglutide

Everything on Zepbound

The registers and documents behind both sides

Two cards compared on the same checks. These are the registers those checks were run against, and the FDA's own pages where either side is a compounded product.

Compounding and the FDA: questions and answers — What a compounded drug is, and what the FDA does and does not review before it is sold.
Medications containing semaglutide marketed for type 2 diabetes or weight loss, FDA — The FDA's own notice on compounded semaglutide and what it has not evaluated.

Compounded semaglutide against Zepbound, answered

What happens if you stop Compounded semaglutide or Zepbound?: Zepbound's label includes a trial that stopped the drug on purpose; Compounded semaglutide has no FDA label at all, which is a difference in what is known rather than in what happens. On Zepbound's label, the people randomly assigned to stop gained 14% of body weight over the following 12 months while those who carried on lost 5.5% more. That figure belongs to Zepbound's trial, so this page does not apply it to Compounded semaglutide.
Is Compounded semaglutide or Zepbound better for weight loss?: Only Zepbound has a trial figure recorded here: 20.9% average weight loss, from its own label trial. Compounded semaglutide has none on this site — a compounded preparation has no trial of its own, so the two cannot be compared on effect and this page does not pick one on it.
Which is cheaper, Compounded semaglutide or Zepbound?: Compounded semaglutide starts lower, at $129 a month against $299. For Compounded semaglutide ($129–$349) only a starting price is published, not one for the maintenance dose, so which costs less once titrated cannot be worked out here.
Can you switch between Compounded semaglutide and Zepbound?: They are different molecules, so this is a change of medication rather than of brand, and the one you move to is started on its own dosing schedule.