Semaglutide is a glucagon-like peptide-1 (GLP-1) receptor agonist — a class of prescription medication originally developed for type 2 diabetes that is also used in medically supervised weight management programs. It works by mimicking a hormone the body naturally produces after eating. Semaglutide is available only by prescription and requires evaluation by a licensed healthcare provider.

Semaglutide has become one of the most discussed medications in the fields of metabolic health and weight management. Originally developed to help manage blood sugar in adults with type 2 diabetes, it has since been studied and prescribed in the context of medically supervised weight care as well.

Semaglutide is a glucagon-like peptide-1 (GLP-1) receptor agonist — a type of prescription medication that mimics a hormone the body naturally produces after eating. It is not an over-the-counter supplement. It requires evaluation by a licensed provider, and a prescription is issued only when a provider determines it is medically appropriate for the individual.

This article explains what semaglutide is, how it works in the body, what the prescription process involves, and what to consider before discussing semaglutide care with a provider.

What is semaglutide?

Semaglutide is an active pharmaceutical ingredient classified as a glucagon-like peptide-1 (GLP-1) receptor agonist. GLP-1 is a hormone the body naturally releases in the gut after eating. It plays a role in signaling fullness to the brain, stimulating insulin release from the pancreas, and slowing the movement of food through the digestive system.¹

Semaglutide is a synthetic version of this hormone. It is designed to bind to the same GLP-1 receptors in the body and produce similar effects — but at levels that persist longer than the body’s natural GLP-1 release.¹

Semaglutide is available in injectable and oral forms. Injectable semaglutide is administered subcutaneously (under the skin) once weekly. An oral tablet form is also available for certain approved indications.

How does semaglutide work?

Semaglutide works by activating GLP-1 receptors throughout the body. The primary mechanisms that have been studied include:

1. Appetite and satiety signaling

GLP-1 receptors are present in areas of the brain involved in regulating hunger and food intake. These receptors are part of the body’s natural appetite signaling system, and semaglutide interacts with them as part of its broader metabolic mechanism.¹

2. Slowing gastric emptying

Semaglutide interacts with receptors involved in the rate at which food moves from the stomach into the small intestine. Gastric emptying is a normal part of digestion that the body’s GLP-1 hormone naturally helps regulate after eating.¹

3. Insulin and glucagon regulation

Semaglutide stimulates the pancreas to release insulin in response to elevated blood glucose levels. It also suppresses glucagon — a hormone that raises blood sugar — when glucose levels are high. These effects work in a glucose-dependent manner, meaning they are most active when blood sugar is elevated.¹

4. Dose titration

Semaglutide is typically started at a low dose and increased gradually over several weeks or months — a process called titration. This approach allows the body to adjust and enables the prescribing provider to monitor tolerance and response before reaching a maintenance dose.

What is semaglutide used for?

Semaglutide has been studied and approved for use across several clinical contexts. The specific approved uses depend on the formulation and dose.

Common uses that licensed providers may consider include:

• Type 2 diabetes management — supporting blood sugar control as part of a comprehensive treatment plan, in combination with lifestyle changes
• Medically supervised weight care — in adults whose weight-related health status may make prescription treatment appropriate, as determined by a licensed provider

A licensed provider evaluates a patient’s individual health history, current medications, and treatment goals to determine whether semaglutide may be appropriate and, if so, which formulation and dose to prescribe.

What is compounded semaglutide?

Compounded semaglutide is a form of semaglutide prepared by a state-licensed compounding pharmacy or federally registered outsourcing facility, rather than manufactured as a branded drug by a pharmaceutical company.

Compounded semaglutide is not FDA-approved and has not been evaluated by the FDA for safety, efficacy, or quality.² It is not the same as any brand-name semaglutide medication, and it is not a generic. A licensed prescriber determines whether a compounded formulation is medically appropriate for an individual patient, based on that patient’s specific clinical needs.

Compounded semaglutide is available by prescription only. The prescription process involves an evaluation by a licensed provider, who reviews health history, current medications, and other relevant factors before determining whether to prescribe.

What does the semaglutide prescription process involve?

Whether someone pursues semaglutide through an in-person provider or a telehealth platform, the general process is similar.

Here is what the process typically includes:

1. Health evaluation

A licensed provider reviews the patient’s full health history, including current medications, any relevant lab work, weight history, and health goals. This evaluation is the foundation for determining whether semaglutide — or any GLP-1 medication — may be appropriate.

2. Prescription and titration

If a provider determines that semaglutide is medically appropriate, they will issue a prescription and establish a titration schedule. Semaglutide is started at a low starting dose and increased gradually over time to the maintenance dose.

3. Ongoing monitoring

Semaglutide therapy involves ongoing provider oversight. Check-ins allow the provider to assess how the medication is being tolerated, make dosing adjustments, and confirm that the treatment continues to be appropriate.

What should you discuss with a provider before starting semaglutide?

There are several things a provider will want to review before prescribing semaglutide. These typically include:

• Personal and family medical history, including any history of thyroid conditions or pancreatic disease
• Current medications, including insulin or other diabetes drugs, which may require adjustment
• History of kidney, gallbladder, or gastrointestinal conditions
• Whether the patient is pregnant, breastfeeding, or planning to become pregnant
• Prior weight management efforts and relevant health goals

Not everyone is a suitable candidate for semaglutide. A licensed provider is the appropriate person to evaluate whether semaglutide care is right for an individual patient.

How LumiMeds Can Help

LumiMeds connects patients with licensed providers who can review their health history and treatment goals to determine whether prescription semaglutide care may be medically appropriate. If prescribed, compounded semaglutide may be fulfilled through state-licensed compounding pharmacies and shipped directly to you.

Key Takeaways

• Semaglutide is a GLP-1 receptor agonist — a prescription medication that mimics a hormone the body naturally produces after eating to regulate appetite, digestion, and blood sugar.
• It is used in clinically supervised contexts for type 2 diabetes management and medically guided weight care, among other indications, as determined by a licensed provider.
• Compounded semaglutide is not FDA-approved and is not the same as any brand-name drug. It is prescribed when a licensed provider determines a compounded formulation is appropriate for an individual patient.
• The prescription process involves a full health evaluation, a gradual titration schedule, and ongoing provider monitoring.
• A licensed provider determines whether semaglutide — in any form — is medically appropriate for an individual based on a review of their health history and clinical needs.

FAQs

What does semaglutide do?

Semaglutide is a GLP-1 receptor agonist that works by mimicking a hormone the body naturally produces after eating. It activates GLP-1 receptors in the brain, gut, and pancreas — influencing appetite signaling, slowing digestion, and supporting insulin regulation. It is a prescription medication used in the context of type 2 diabetes management and medically supervised weight care.

Is semaglutide the same as Ozempic or Wegovy?

Semaglutide is the active ingredient in several brand-name medications. Ozempic® and Wegovy® both contain semaglutide, but they are approved for different indications and are available at different doses. Compounded semaglutide is not the same as these brand-name medications. Ozempic® is a registered trademark of Novo Nordisk. Wegovy® is a registered trademark of Novo Nordisk. LumiMeds is not affiliated with or endorsed by Novo Nordisk.

How is semaglutide administered?

Injectable semaglutide is administered as a subcutaneous (under the skin) injection, typically once weekly. An oral form is also available for certain approved indications. A licensed provider will advise on the appropriate formulation and administration method for each patient.

Do you need a prescription for semaglutide?

Yes. Semaglutide is a prescription medication in all of its forms — including compounded versions. A licensed healthcare provider must evaluate the patient and determine that semaglutide is medically appropriate before issuing a prescription.

What is the difference between semaglutide and tirzepatide?

Both semaglutide and tirzepatide are prescription medications used in the management of type 2 diabetes and medically supervised weight care. Semaglutide activates the GLP-1 receptor only, while tirzepatide activates both the GLP-1 and GIP (glucose-dependent insulinotropic polypeptide) receptors. A licensed provider can help evaluate which option may be appropriate for an individual patient.

Can you get a semaglutide prescription online?

Through a telehealth platform, patients can complete a health evaluation with a licensed provider online. If the provider determines that semaglutide is medically appropriate, a prescription may be issued and the medication may be fulfilled through a licensed pharmacy and shipped directly to the patient.

Compounded medications are not FDA-approved and have not been evaluated for safety and effectiveness by the FDA. Compounded medications are not brand-name drugs nor are they considered “generics.” Compounded medications are prepared by state-licensed compounding pharmacies or federally registered outsourcing facilities.

Payment does not guarantee the writing or dispensing of a prescription. A licensed provider will determine whether treatment is medically appropriate based on individual health history and needs.

This information is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a licensed healthcare provider with any questions you may have regarding a medical condition or treatment.

Sources

1. Mahapatra, M. K., et al. “Semaglutide, a glucagon like peptide-1 receptor agonist with cardiovascular benefits for management of type 2 diabetes.” Reviews in Endocrine and Metabolic Disorders. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7878828/
   This study was conducted on FDA-approved semaglutide formulations. Findings do not constitute evidence of safety or efficacy for compounded semaglutide.
2. Food and Drug Administration. “Compounding and the FDA: Questions and Answers.” https://www.fda.gov/drugs/human-drug-compounding/compounding-and-fda-questions-and-answers