Compounded GLP-1 (Semaglutide) Safety Information
Important safety information for Compounded GLP-1 (Semaglutide).
Safety information · Compounded GLP-1 (Semaglutide) · Updated Jun 9, 2026
Do Not Use If You:
Have a personal or family history of medullary thyroid carcinoma (MTC)
Have Multiple Endocrine Neoplasia syndrome type 2 (MEN 2)
Are pregnant or planning to become pregnant
Are breastfeeding
Have had a serious allergic reaction to semaglutide or any of its ingredients
Before Using Compounded GLP-1
Tell your healthcare provider about your full medical history, including if you have:
Kidney, liver, or pancreas problems
A history of pancreatitis or gallbladder disease
Severe gastrointestinal disease
A history of diabetic retinopathy
Depression, suicidal thoughts, or behavior changes
Discuss all prescription and non-prescription medications, vitamins, and supplements you take, especially:
Insulin or insulin secretagogues (e.g., sulfonylureas)
Thyroid hormone medication
Medications with a narrow therapeutic range (e.g., warfarin)
Pregnancy, Breastfeeding & Contraception
Do not use if you are pregnant, planning to become pregnant, or breastfeeding.
Stop treatment at least 2 months before trying to conceive.
Use effective contraception while on treatment.
This medication may cause fetal harm.
Serious Warnings: Call Your Doctor Immediately If You Experience:
Thyroid C-cell tumor symptoms (see Black Box Warning above)
Pancreatitis: severe abdominal or back pain that does not go away, with or without vomiting
Gallbladder disease: pain in the upper right stomach, fever, yellowing of skin or eyes, nausea or vomiting
Kidney problems: reduced urination, swelling, fatigue, especially if dehydrated from nausea, vomiting, or diarrhea
Diabetic retinopathy changes: sudden vision changes
Serious allergic reaction: swelling of face, lips, tongue, or throat; difficulty breathing or swallowing; rash, itching, fainting, dizziness, or rapid heartbeat
Hypoglycemia (especially if also taking insulin or sulfonylureas): dizziness, confusion, sweating, rapid heartbeat, shakiness, headache
Worsening depression or suicidal thoughts
If any of these occur, stop treatment and seek immediate medical attention.
Common Side Effects
Some people experience no side effects. The most common include:
Nausea, vomiting, diarrhea, constipation, abdominal pain
Headache, dizziness, fatigue
Indigestion, upset stomach, acid reflux
Decreased appetite
Injection site reactions
Side effects are usually mild to moderate and tend to decrease over time. Contact your provider if symptoms persist or worsen.
Drug Interactions
Compounded semaglutide slows gastric emptying, which may impact the absorption of oral medications.
Dose adjustments may be required for insulin, sulfonylureas, thyroid hormone, and medications with a narrow therapeutic index.
Monitor closely if on warfarin or other blood thinners.
Important Note on Compounded Medications
Compounded semaglutide is prepared by a licensed compounding pharmacy and is not evaluated by the FDA for safety or effectiveness. It is not equivalent to FDA-approved semaglutide products such as Wegovy® or Ozempic®.
Emergency Information
In case of a medical emergency, call 911 or go to the nearest emergency room.
To report side effects, contact the FDA at 1-800-FDA-1088 or visit www.fda.gov/medwatch.
Education only, not medical advice.