GLP-1s

The evidence base is growing but still developing. Some GLP-1 drugs have over a decade of safety data from diabetes treatment; the newer, higher-dose weight-management versions have shorter track records. Most common side effects (nausea, GI discomfort) occur early and often ease over time, but researchers are still tracking longer-term outcomes.

Patients should speak with their healthcare providers about how these medications may affect muscle and bone while they are taking them.

NIDDK Resource

Often, yes. Some regain is common once the medication is stopped, because appetite-regulating signals shift back. People who build lasting nutrition and activity habits while on the medication tend to hold on to more of the loss, but regain isn't a sign that treatment "failed."

NIH Study

Some of the weight lost while taking these medications does come from loss of muscle, not just fat, a concern researchers, including NRI's Dr. Batsis, are actively studying, especially in older adults. Resistance exercise and adequate protein intake during treatment appear to help preserve muscle.

Research Review

GLP-1 medications may not be appropriate for everyone. Pregnancy, certain personal or family medical histories, and some existing health conditions may affect whether a particular medication is appropriate.

Review your complete medical history with a qualified healthcare provider. 

NIDDK Resource

No. Compounded medications are not FDA-approved, and the FDA does not review them for safety, effectiveness or quality before they are marketed. A compounded medication may be appropriate in limited circumstances when a patient’s needs cannot be met by an available FDA-approved product.

Discuss the source and safety of any medication with a qualified healthcare provider.

Researchers are continuing to study their long-term use, what happens after treatment ends, how to preserve muscle and bone during weight loss, and whether uncommon side effects may appear over time.