Last updated: 2026-01-15
This page contains Important Safety Information (ISI) for compounded GLP-1 medications (including, but not limited to, compounded semaglutide and compounded tirzepatide) that may be prescribed to you by a licensed healthcare provider through PLX Health. Please read this information carefully before starting treatment and review it with your prescribing provider. This information is not a substitute for the full prescribing information or for medical advice from your provider.
GLP-1 receptor agonists, including semaglutide and tirzepatide, have caused dose-dependent and treatment-duration-dependent thyroid C-cell tumors at clinically relevant exposures in rodent studies. It is unknown whether these medications cause thyroid C-cell tumors, including medullary thyroid carcinoma (MTC), in humans.
Do not use compounded GLP-1 medications if you or any of your family members have ever had MTC, or if you have Multiple Endocrine Neoplasia syndrome type 2 (MEN 2). Tell your provider right away if you have a lump or swelling in your neck, hoarseness, trouble swallowing, or shortness of breath. These may be symptoms of thyroid cancer.
Compounded medications are prepared by a state-licensed compounding pharmacy in response to an individual prescription from a licensed healthcare provider. Compounded GLP-1 medications are not reviewed by the U.S. Food and Drug Administration (FDA) for safety, efficacy, or quality before they are dispensed, and they are not FDA-approved products.
Compounded products may differ from the FDA-approved branded versions in formulation, strength, inactive ingredients, route of administration, or appearance. There is no guarantee that a compounded medication will perform the same way as an FDA-approved product.
PLX Health does not manufacture or dispense medications. Prescriptions are written by independent licensed providers and dispensed by independent licensed pharmacies.
Compounded GLP-1 medications may be prescribed by a licensed provider as an adjunct to a reduced-calorie diet and increased physical activity to support weight management in adults when clinically appropriate. Eligibility, dosing, and duration of treatment are determined by the prescribing provider based on your medical history and clinical presentation.
Before starting and during treatment, tell your provider about all of your medical conditions, including if you:
Serious side effects may include:
The most commonly reported side effects of GLP-1 medications include:
These are not all of the possible side effects. Talk to your provider for medical advice about side effects.
Tell your provider about all medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. GLP-1 medications slow stomach emptying, which can affect how other oral medications are absorbed. Special caution is needed when used with insulin, sulfonylureas, or oral contraceptives.
Compounded GLP-1 medications should not be used during pregnancy or while breastfeeding. If you are able to become pregnant, use effective contraception during treatment. Discontinue use at least two months before a planned pregnancy. Tell your provider immediately if you become pregnant while taking the medication.
Use compounded GLP-1 medications exactly as prescribed by your provider. Do not change your dose or stop treatment without talking to your provider first. Store the medication as instructed on the label, dispose of needles and syringes in an FDA-approved sharps container, and never share your medication, pen, or needles with anyone else.
If you experience a side effect or adverse event, contact your prescribing provider. You are also encouraged to report adverse events directly to the U.S. Food and Drug Administration by visiting www.fda.gov/medwatch or by calling 1-800-FDA-1088.
For non-emergency questions about your treatment, you may contact us at support@plxhealth.com. If you are experiencing a medical emergency, call 911 or go to the nearest emergency room.
This Safety Information is provided for general educational purposes and does not replace the full prescribing information for any medication or the medical judgment of your licensed healthcare provider. Always read the patient information that accompanies your medication and discuss any questions or concerns with your provider or pharmacist before starting, stopping, or changing treatment.