Practical
Semaglutide injection technique and storage basics
General principles for a weekly subcutaneous injection — your specific product's instructions always govern.
Quick Answer
Injectable semaglutide is given subcutaneously once weekly, typically into the abdomen, thigh or upper arm, with site rotation. It is generally refrigerated, with specific room-temperature allowances per the product. Compounded products may have different concentrations and storage needs — follow the exact instructions you are given. Compounded semaglutide is not FDA-approved.
Key Facts
- Injectable: subcutaneous, once weekly, same day each week
- Common sites: abdomen, front of thigh, back of upper arm — rotate weekly
- Generally refrigerated; protect from light and heat (room-temp allowance varies)
- Compounded products may differ in concentration — follow exact directions
- Compounded semaglutide is not FDA-approved
Route and frequency
Injectable semaglutide is injected subcutaneously (into the fat layer under the skin) once weekly, on the same day each week, with or without food. Branded products come in pre-filled pens; compounded versions are typically supplied in vials with separate syringes. (Oral Rybelsus is taken daily on an empty stomach — see oral vs injectable.)
Sites and rotation
Common sites are the abdomen (avoiding the area right around the navel), the front of the thigh, or the back of the upper arm. Rotating sites week to week helps avoid skin reactions and lumps that can affect absorption. Clean technique reduces infection risk.
Storage and cold chain
Semaglutide is generally stored refrigerated (not frozen), with labeling specifying any allowed room-temperature window. Protect it from light and heat. Proper cold-chain handling during shipping matters — one reason to confirm a provider's shipping practices.
Compounded differences
Compounded semaglutide may differ in concentration and formulation, changing the volume you draw and possibly the storage and beyond-use dating. Never assume branded instructions apply to a compounded vial. Follow your prescriber's and pharmacy's specific directions, and ask if anything is unclear. Compounded semaglutide is not FDA-approved.
Frequently asked questions
Where do you inject semaglutide?
Subcutaneously into the abdomen, front of the thigh, or back of the upper arm, rotating sites weekly. Follow your product's specific instructions.
How is semaglutide stored?
Generally refrigerated and protected from light, with a product-specific room-temperature allowance. Compounded products may differ — follow your pharmacy's directions.
References
- U.S. Food and Drug Administration. Wegovy, Ozempic and Rybelsus (semaglutide) prescribing information. Novo Nordisk.
- Overgaard RV, et al. Clinical pharmacokinetics of semaglutide. Clin Pharmacokinet. 2019.
Citations are for educational reference; this article summarizes published research in plain language and is not medical advice.
Bottom Line
Injectable semaglutide is a weekly subcutaneous injection with site rotation and cold-chain storage. Compounded products can differ in concentration — always follow the exact instructions for your specific preparation.
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