What happens if you stop Compounded tirzepatide or Zepbound?

Zepbound's label includes a trial that stopped the drug on purpose; Compounded tirzepatide 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 tirzepatide.

Is Compounded tirzepatide 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 tirzepatide 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 tirzepatide and Zepbound?

They are the same molecule, tirzepatide, but Compounded tirzepatide is a compounded preparation and Zepbound the approved product, so switching changes the product even though the molecule stays the same.

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Compounded tirzepatide 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 1.8). Compounded tirzepatide 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 tirzepatide or Zepbound (tirzepatide)?

Compounded tirzepatide is $199–$359 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 tirzepatide — not FDA approved, manufacturer lawsuit, supply risk. Zepbound (tirzepatide) is an FDA-approved product and Compounded tirzepatide 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 1.8 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 tirzepatide against Zepbound (tirzepatide), one row per axis, with the side that wins each axis marked.
What decides it	Compounded tirzepatide $199–$359/mo	Zepbound $299–$699/mo
Entry priceCompounded tirzepatide is $100/mo cheaper to start — $199 against $299.	✓ better here	—
Regulatory and complaint riskCompounded tirzepatide: 3 serious flags. Zepbound (tirzepatide): none.	—	✓ better here
Approved product or compounded copyZepbound (tirzepatide) supplies an FDA-approved product; Compounded tirzepatide 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 tirzepatide publishes no page halfrx will send you toGo to Zepbound ↗

What separates these two, price aside

They share tirzepatide but not the product's legal status: Zepbound (tirzepatide) is the FDA-approved product and Compounded tirzepatide a compounded preparation, so they are not the same purchase.

503A/503B compounding pharmacies

Compounded tirzepatide

1.8

$199–$359/mo all-in

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

Not FDA approvedCompounding legal riskManufacturer lawsuitSupply risk

Eli Lilly

Zepbound (tirzepatide)

7.3

$299–$699/mo all-in

checked 2026-08-19, 46 days ago, past the 45-day window

Price conditional on refill timingBoxed warning

Compounded tirzepatide

Pros

+Access to tirzepatide, the most effective molecule, at $199–$359/mo against Zepbound's $1,086 list.[1]
+Vial dosing allows finer titration than branded pens.[1]

Cons

−Not FDA approved — no review of safety, efficacy or manufacturing quality.[1]
−Eli Lilly has active lawsuits against compounded tirzepatide sellers, including Henry Meds. A ruling against your provider ends your supply.[2]
−The tirzepatide shortage that legally permitted mass compounding has been resolved, so the category now operates on contested legal ground.[2]
−Zepbound vials through LillyDirect start at $299/mo — the branded gap is far smaller than it was, which weakens the only argument for compounding.[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 tirzepatide

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 tirzepatide against Zepbound, answered

What happens if you stop Compounded tirzepatide or Zepbound?: Zepbound's label includes a trial that stopped the drug on purpose; Compounded tirzepatide 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 tirzepatide.
Is Compounded tirzepatide 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 tirzepatide 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 tirzepatide or Zepbound?: Compounded tirzepatide starts lower, at $199 a month against $299. For Compounded tirzepatide ($199–$359) 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 tirzepatide and Zepbound?: They are the same molecule, tirzepatide, but Compounded tirzepatide is a compounded preparation and Zepbound the approved product, so switching changes the product even though the molecule stays the same.