Guide
Refrigeration, room-temperature limits, travel, and shipping logistics.
GLP-1 medications are biologics; peptides that degrade with heat, freezing, light, and time. Proper storage protects potency. Improper storage during shipping or at home can leave you injecting compromised product. Here is the full handling protocol.
Store all GLP-1s (brand-name pens and compounded vials) at 36-46 degrees F (2-8 degrees C) until first use. The refrigerator door is convenient but is the warmest, most temperature-variable spot. Storing on a middle shelf away from the back wall (which can freeze in some refrigerators) is more reliable.
Brand-name pens have label-defined room-temperature stability. Wegovy and Ozempic pens are stable at room temperature (≤86 degrees F / 30 degrees C) for up to 56 days. Mounjaro and Zepbound pens are stable for 21 days at room temperature. Compounded vials follow the compounding pharmacy's beyond-use date; most are 28-60 days refrigerated; do not assume room-temp stability without confirmation.
Stability windows are defined by the manufacturer's testing showing the product remains within potency and impurity specs. Beyond that window, potency may decline, meaning you are injecting less active drug than the dose says. It rarely becomes outright unsafe; it just becomes less effective.
Never freeze. If your medication freezes (left in a car overnight in winter, refrigerator set too cold), discard it. Visible signs of freeze damage include cloudiness, particles, or a different consistency. Even without visible damage, frozen-then-thawed product should not be used.
Brief, mild heat exposure (a few hours at room temperature during shipping, sitting in a warm bag for an hour) is generally not destructive. Sustained exposure above 86 degrees F (30 degrees C) is. If your medication has been in a hot car, mailbox in summer heat, or warm package room for hours, contact the supplier for guidance.
Reputable telehealth providers ship GLP-1s in insulated packaging with cold packs sized for 48-72 hour transit. Look for shipments delivered Monday-Wednesday so they do not sit over a weekend. If your shipment arrives with melted cold packs, warm packaging, or visibly damaged product, photograph it and contact the provider before using.
For trips up to 3-5 days, an insulated medication travel case with a small ice pack or TSA-cleared cold pack is sufficient. For longer trips, either bring a portable medical refrigerator, buy ice locally and rotate every 12 hours, or have your provider ship to your destination. TSA permits gel packs for medical purposes; declare medications at security.
Used pens and syringes go in an FDA-cleared sharps container. Most pharmacies offer drop-off. Many states have free mail-back programs. Never put used sharps in household trash, recycling, or down toilets.
GLP-1 solutions should be clear and colorless. Discard if cloudy, discolored, or particulate. Inspect every dose, every time. Compounded products with B12 (methylcobalamin) co-formulation may have a faint pink-red tint; this is normal and should be confirmed by the compounding pharmacy at intake.
Wegovy/Ozempic: 56 days at <=86 deg F. Mounjaro/Zepbound: 21 days at <=86 deg F. Compounded: per pharmacy beyond-use date, usually 28 days refrigerated only unless otherwise specified.
Photograph the shipment and contact the provider before using. Brief warming during transit is usually fine; sustained warmth is not.
No. Freezing irreversibly damages GLP-1 peptides.
Small air bubbles are normal in pre-filled pens and do not affect dosing. Particles, cloudiness, or color change indicate the product should be discarded.
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Editorial note. This guide is for educational purposes only and does not constitute medical advice. Always consult a licensed clinician about your specific situation.