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Cold, labeled, dated. That’s the whole system.
Compounded tirzepatide storage: your label, warm deliveries and the 28-day rule
By the NexLife Medical Team · Medically reviewed by Adam Kennah, MD · Updated
Store compounded tirzepatide the way your prescription label says: usually in the fridge at 36°F to 46°F, never frozen (checked November 1, 2026). Use an opened vial within 28 days (or by its beyond-use date, if sooner), and don’t use one that arrives warm.
- Your label sets the rules, not Zepbound’s
- Warm or frozen? Don’t use it. One call fixes it
- Day 28 is the limit once a vial is opened
Compounded tirzepatide storage at a glance
- Before first use
- In the fridge, 36°F to 46°F, unless your label says otherwise
- After first use
- Up to 28 days, or the beyond-use date if sooner
- Arrived warm
- Don’t use it. Call or text us
- Froze
- Don’t use it. Call or text us
- Zepbound’s 21-day rule
- Doesn’t apply to compounded vials
Something looks off? Call or text
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Key takeaways
- Compounded tirzepatide storage: 36°F to 46°F in the fridge, unless your label says otherwise; never frozen.
- Day 28 is the limit for an opened vial, or its beyond-use date if that comes first.
- Zepbound’s 21-day rule isn’t yours: its unrefrigerated limit, up to 86°F, was tested for Zepbound, not compounded vials.
- Arrived warm or frozen? Don’t use it. Keep the vial and box, and contact the program that prescribed it.
- Set up the fridge once: middle shelf, away from the back wall, in its box, with a fridge thermometer.
- At NexLife, compounded tirzepatide is $139 a month on the 12-month plan. Something off? Call or text us, 24/7.
Step by step
How do you store compounded tirzepatide?
Six steps, from the day it arrives to the day you discard it. If your label says something different, follow your label.
- Read your label first. Its storage line and beyond-use date are the rules for your vial, not Zepbound’s.
- Put it in the fridge, in its box. Keep it at 36°F to 46°F, unless your label says otherwise. The box protects it from light and bumps.
- Middle shelf, away from the back wall. The door runs warmer, and many fridges run coldest at the back. A fridge thermometer shows the real temperature.
- Never let it freeze. Don’t use a vial that froze, even after it thaws.
- Date it the day you open it. Write the first-use date on the cap or the box, and discard it 28 days later, or by the beyond-use date if sooner.
- Arrived warm or looks wrong? Don’t use it. Keep the vial and the box, and call or text NexLife at
(949) 818-8000 , 24/7. We talk to the pharmacy for you.
The same six steps, from delivery to day 28. Your prescription label and your prescriber’s instructions come first.
Why “follow the label” isn’t a dodge
Why does your tirzepatide label set the storage rules?
Zepbound has its own rules. Eli Lilly tested how long Zepbound stays stable, so its label allows an unopened single-dose pen or vial to sit unrefrigerated at up to 86°F (30°C) for up to 21 days.
Your vial didn’t go through that testing. Compounded tirzepatide is prepared by a state-licensed pharmacy for you, with its own ingredients, concentration and process. The FDA hasn’t reviewed it, so Zepbound’s numbers don’t carry over.
Your label sets the date. The beyond-use date on your label answers “how long is this good for?” for your vial. It already accounts for how it was prepared. Use the vial by that date, opened or not.
“If needed, each single-dose pen or single-dose vial can be stored unrefrigerated at temperatures not to exceed 30°C (86°F) for up to 21 days.”
Eli Lilly and Company, Zepbound (tirzepatide) prescribing information, revised February 2026 (FDA’s copy)
Label missing a storage line, or you can’t read it? Don’t guess. Text us a photo at
Stored right, every time.
Your medication travels from a named pharmacy to your door. Here’s how to keep it right once it’s there.
- Labels differ. Every prescription label carries its own storage directions and beyond-use date.
- Deliveries vary. Weather and timing can affect a package.
- Advice gets mixed. Rules for brand-name pens don’t apply to compounded vials.
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Opened vials
When do you throw out an opened tirzepatide vial?
Every time a needle goes through the rubber top, there’s a small chance of contamination. That’s why USP Chapter 797, the sterile-compounding standard, calls for throwing out a multiple-dose vial 28 days after its first use, even if medication is left. If the beyond-use date on the label comes first, that date wins.
| First dose from the vial | Day 28 | Beyond-use date on label |
|---|---|---|
| October 1 | October 29 | October 15 |
| October 10 | November 7 | November 20 |
| October 20 | November 17 | November 30 |
Discard on whichever date comes first: in the first example, October 15; in the other two, day 28.
“Discard the vial within 28 days after the first use, even if medication remains in the vial.”
U.S. Food and Drug Administration, FDA’s Concerns with UnapprovedGLP-1 Drugs Used for Weight Loss
- Write the first-use date on the vial cap or the box the day you open it.
- Set a phone reminder for day 27, so you can plan your next vial.
- Running low before day 28? Tell us early and we’ll time your refill.
Vial math
How much of a vial do you use in 28 days?
With weekly doses, an opened vial covers 4 doses at most before day 28. Here’s what each dose is at one example strength.
| Weekly dose | Volume | Units (U-100) | 4 weekly doses use |
|---|---|---|---|
| 2.5 mg | 0.1 mL | 10 units | 10 mg (0.4 mL) |
| 5 mg | 0.2 mL | 20 units | 20 mg (0.8 mL) |
| 7.5 mg | 0.3 mL | 30 units | 30 mg (1.2 mL) |
| 10 mg | 0.4 mL | 40 units | 40 mg (1.6 mL) |
| 12.5 mg | 0.5 mL | 50 units | 50 mg (2 mL) |
| 15 mg | 0.6 mL | 60 units | 60 mg (2.4 mL) |
The math: mL = dose ÷ strength (mg per mL); units = mL × 100. At 25 mg/mL, 5 mg is 5 ÷ 25 = 0.2 mL, or 20 units.
25 mg/mL is an example only: it’s the strength of Zepbound’s 15 mg multi-dose vial on its FDA label (15 mg in 0.6 mL). Your vial’s label decides the strength, and your prescription decides the dose. Other strengths: the tirzepatide dosage chart.
Warm deliveries
What if your tirzepatide arrives warm or looks wrong?
Deliveries are the riskiest part of a cold chain. Weather, a late truck or a box left on the porch can warm a vial. The FDA recommends not using an injectable
“FDA has received complaints that certain compounded GLP-1 drugs have arrived warm or with inadequate ice packs to keep the drug at recommended storage temperatures.”
U.S. Food and Drug Administration, FDA’s Concerns with UnapprovedGLP-1 Drugs Used for Weight Loss
| What happened | What to do |
|---|---|
| Arrived warm, or the cold packs are fully melted | Don’t use it. Keep the vial and box. Call or text us. |
| The vial froze, or has ice crystals | Don’t use it, even after it thaws. Call or text us. |
| Left out of the fridge overnight | Don’t use it unless your label allows it. Call or text us to check. |
| Cloudy, has particles, or the seal is broken | Don’t use it. Call or text us. |
| The label doesn’t match your prescription | Don’t use it. Call or text us right away. |
| Past day 28, or past the beyond-use date | Discard it safely. Tell us if you need a refill sooner. |
You call us. We handle the pharmacy.
Whatever went wrong, it starts with one call or text to us, 24/7, at
At home
Where should tirzepatide go in your fridge?
Middle shelf, not the door
The door swings warmer every time it opens. A middle shelf holds the steadiest temperature.
Away from the back wall
Many fridges run coldest at the back, where vials can freeze. Keep a few inches of space.
In its box, out of light
Keep the vial in its original box unless your label says otherwise. It protects from light and bumps.
A simple fridge thermometer
It tells you the fridge really sits between 36°F and 46°F, not just what the dial says.
What would you pay with NexLife?
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Prices from each provider’s own site, checked November 1, 2026. Brand-name and compounded medications are different products: compounded medications aren’t FDA-approved, and a provider prescribes one only when it offers a significant difference for you. Price Match Guarantee† terms apply.
What does NexLife cost?
One flat price at every dose.
No membership fee. Provider care, a nutrition plan, coaching and shipping are included. Paying less with another licensed provider? We match your regular monthly price.†
GIP + 12-month plan $139/mo
Tirzepatide
Weekly and dual-action. Care, coaching and shipping included. On a 12-month plan; $169/mo month to month.
Check my eligibilityCompounded, not FDA-approved · Not prescribed? No charge for medication
12-month plan $119/mo
Semaglutide
Weekly
Compounded, not FDA-approved · Not prescribed? No charge for medication
Compounded, not FDA-approved. A licensed provider prescribes it only when it offers a significant difference for you. Vials shown are illustrations. Always use the strength on your pharmacy’s label. Every plan and price · Price Match Guarantee† terms
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Tirzepatide storage: your questions, answered
Fair questions about NexLife
- Will my price go up with my dose?
- No. You pay the same at every dose.
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- You aren’t charged for medication.
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- Yes, by email. It takes effect 30 days after we receive it. Plans renew until you cancel; our cancellation policy has the details.
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How should I store compounded tirzepatide?
Exactly as your prescription label says. Most labels say to keep the vial in the fridge at 36°F to 46°F (2°C to 8°C), never frozen. Keep it in its box, too. The label wins over anything you read online, including Zepbound’s rules, because how long a compounded vial stays good depends on how it was prepared.
Does compounded tirzepatide need to be refrigerated?
Almost always, yes. The FDA says injectable
How long does compounded tirzepatide last in the fridge?
Unopened, until the beyond-use date on your label. Once you puncture the vial, use it within 28 days, even if medication is left, or by the beyond-use date if that comes first. That’s the rule in USP Chapter 797, the sterile-compounding standard, because each puncture adds a small chance of contamination.
My tirzepatide arrived warm. Can I use it?
No. The FDA recommends not using an injectable
Does Zepbound’s 21-day room-temperature rule apply to compounded vials?
No. Zepbound’s label lets an unopened single-dose pen or vial sit unrefrigerated at up to 86°F for up to 21 days. Eli Lilly tested that for Zepbound. A compounded vial didn’t go through that testing, and the FDA hasn’t reviewed it. Follow your own label, and ask if you’re unsure.
What if my vial froze?
Don’t use it, even after it thaws: freezing can damage the medication. Keep the vial and the box, and contact the program that prescribed it. To prevent it, keep vials on a middle shelf, away from the back wall, where many fridges run coldest. At NexLife, call or text
What temperature should compounded tirzepatide be stored at?
Usually 36°F to 46°F (2°C to 8°C), in the fridge and never frozen, but your prescription label is the rule, because labels differ. A simple fridge thermometer tells you the fridge really sits in that range, not just what the dial says. If your vial froze or arrived warm, don’t use it.
When should I throw away an opened vial of compounded tirzepatide?
Within 28 days of the first puncture, or sooner if your label’s beyond-use date comes first. Write the first-use date on the cap or the box the day you open it, and set a phone reminder for day 27. Running low before then? Tell us early, and we’ll time your next shipment.
What if compounded tirzepatide was left out of the fridge overnight?
Don’t use it unless your label allows it: its storage line and beyond-use date are the rules for your vial, not Zepbound’s. Keep the vial and the box, and contact the program that prescribed it. At NexLife, call or text (949) 818-8000, 24/7.
What if my compounded tirzepatide looks cloudy?
Don’t use it. Cloudy liquid, particles or a broken seal are reasons to stop, and so is a label that doesn’t match your prescription. Keep the vial and the box. At NexLife, call or text (949) 818-8000, 24/7, and we talk to the pharmacy for you.
Why is there tirzepatide left in my vial at day 28?
With weekly doses, an opened vial covers 4 doses at most before day 28, so medication may be left. Discard it on day 28 anyway, or on the beyond-use date if that comes first: every time a needle goes through the rubber top, there’s a small chance of contamination.
Important safety information
Compounded tirzepatide and semaglutide are not FDA-approved, and the FDA hasn’t reviewed them for safety, effectiveness or quality. A provider prescribes them only when they offer a significant difference for you compared with an FDA-approved product. Both medicines may cause thyroid tumors, including cancer: don’t use either if you or a family member has had medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN 2).
Read the full safety information
In studies with rodents, both medicines caused thyroid tumors; it isn’t known whether they cause them in people. Tell your provider if you notice a lump or swelling in your neck, hoarseness, trouble swallowing or shortness of breath. Serious side effects can include inflammation of the pancreas (pancreatitis), gallbladder problems, low blood sugar (especially with insulin or sulfonylureas), kidney problems from dehydration, severe stomach problems, serious allergic reactions, vision changes in people with type 2 diabetes, and a faster heart rate. Tell your care team before any surgery or procedure that uses anesthesia or deep sedation. Don’t combine either medicine with other
Tirzepatide can make birth control pills less effective: switch to a non-oral method, or add a barrier method such as condoms, for 4 weeks after you start and for 4 weeks after each dose increase. Both medicines may harm an unborn baby. Semaglutide should be stopped at least 2 months before a planned pregnancy. Tell your provider right away if you’re pregnant, planning to be, or breastfeeding.
This is a summary, not the complete safety information. Read the full Prescribing Information for FDA-approved tirzepatide (Zepbound) and semaglutide (Wegovy), and talk with your provider. You can report side effects to the FDA at
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About NexLife. NexLife is a telehealth and care-coordination platform. Care is delivered through affiliated, physician-owned medical groups, and licensed providers decide whether treatment is right for you. NexLife doesn’t make or compound medication: state-licensed partner pharmacies fill each prescription, and we coordinate the rest. Available only in states where our affiliated providers are licensed.
“Compounded drugs are not FDA-approved. This means that FDA does not verify the safety, effectiveness or quality of compounded drugs before they are marketed.”
Who wrote and medically reviewed this page?
Leads the NexLife Medical Team, which writes and medically reviews NexLife’s guides, including this one.
Checked the FDA’s storage guidance and Zepbound’s labeling on November 1, 2026. Sources are listed below.
- Every fact, sourced. Each price and rule links to the page it comes from.
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Compounded medications aren’t FDA-approved. A provider prescribes one only when it offers a significant difference for you.
- 1Tell us about you
Start online with your health history.
- 2A licensed provider decides
Online, following your state’s rules. You’re prescribed only if treatment is right for you.
- 3We ship it, then stay with you
Our partner pharmacy usually ships within 1 to 2 business days. Free shipping, and questions come to us 24/7, never to the pharmacy.
Sources
- U.S. Food and Drug Administration. FDA’s concerns with unapproved
GLP-1 drugs used for weight loss. - Eli Lilly and Company. Zepbound (tirzepatide) prescribing information.
- U.S. Pharmacopeia. USP General Chapter <797> Pharmaceutical Compounding: Sterile Preparations.
- NexLife. Compounded tirzepatide plans.
- Novo Nordisk. Wegovy (semaglutide) prescribing information.
- LegitScript. LegitScript certification record for NexLife.us.
- NexLife. Compounded semaglutide plans.
- Ro: weight loss program pricing. Checked November 1, 2026.
- Hims: Zepbound KwikPen. Checked November 1, 2026.
- Hims: Wegovy pill and pen, with membership. Checked November 1, 2026.
- Mochi Health: FAQs (membership and medication prices). Checked November 1, 2026.
- Embody: compounded tirzepatide, one-month supply. Checked November 1, 2026.
- Embody: compounded semaglutide, one-month supply. Checked November 1, 2026.
- Eli Lilly and Company, via the FDA. Zepbound (tirzepatide) prescribing information, revised February 2026 (FDA’s copy).
- U.S. Food and Drug Administration. Compounding and the FDA: Questions and Answers.
- U.S. Food and Drug Administration. Human Drug Compounding Laws.
- U.S. Food and Drug Administration. FDA alerts health care providers, compounders and patients of dosing errors associated with compounded injectable semaglutide products. July 26, 2024.