What Is Semaglutide Made Of? Ingredients and Sources

What Is Semaglutide Made Of

In the past few years, semaglutide has become a symbol of hope for those struggling with type 2 diabetes, obesity, and other health problems.

As a man-made version of a hormone called glucagon-like peptide-1 (GLP-1), it works by copying what the body’s natural hormones do to control appetite and release insulin. Despite its increasing popularity, there is still much that is not understood or known about semaglutide’s composition and sourcing.

This post aims to simplify the ingredients and manufacturing process behind semaglutide, exploring its uses, how it works, and possible side effects. Whether you’re a diabetic, health enthusiast, medical professional, or simply curious, join us as we explore what semaglutide is made of.

Semaglutide is a synthetic pharmaceutical compound that belongs to a class of drugs known as glucagon-like peptide-1 (GLP-1) receptor agonists. Designed to mimic the GLP-1 hormone naturally produced in the gut, it regulates blood sugar by increasing insulin secretion, which lowers blood glucose levels.

Unlike the body’s hormone, which doesn’t last very long, semaglutide has been changed so that it doesn’t break down easily in the body.

Semaglutide is made through a process called fermentation using a special yeast that has been modified to produce the active ingredient of semaglutide. This ingredient is a peptide that is important for its effects.

Its effectiveness and longer duration of action make it a significant advancement in the treatment of type 2 diabetes and weight management.

Uses of Semaglutide

Here are some of the purposes for which semaglutide is used:

  • Treatment of Type 2 Diabetes: Semaglutide helps people with type 2 diabetes by improving blood sugar control, which is critical in reducing the risk of diabetes-related complications.
  • Weight Management: Recent studies have shown semaglutide’s efficacy in weight loss which makes it a promising option for obesity treatment and overall weight management.
  • Cardiovascular Health: Semaglutide may have benefits for heart health, as it is linked with a lower risk of major adverse cardiovascular events in people with type 2 diabetes.
  • Incretin Effect: It enhances the incretin effect, which refers to the increased stimulation of insulin secretion in response to eating, leading to better glucose control after meals.
  • Convenience: Administered weekly via injection, its long-lasting effect provides convenience compared to daily diabetes medications.

What is the Composition of Semaglutide?

Semaglutide is mainly made up of a peptide, which is a chain of amino acids that is similar to the natural GLP-1 hormone.

However, semaglutide has a slightly different structure that helps it last longer in the body by resisting breakdown. Here’s a breakdown of what semaglutide is made of and how it works:

1. Synthetic Peptide: Semaglutide’s core structure is a peptide consisting of 31 amino acids, modified from the human GLP-1 sequence.

2. Fatty Acid Modification: A long-chain fatty acid is attached to the peptide, enhancing its binding to albumin, a protein found in the blood. This binding increases the half-life of the drug and enables its once-weekly administration.

3. Amino Acid Alterations: Two amino acid substitutions are also made that help prevent degradation by the enzyme dipeptidyl peptidase-4 (DPP-4) and provide a longer duration of action than the natural GLP-1 hormone.

4. Recombinant DNA Technology: Manufactured using recombinant DNA technology, the peptide is expressed in yeast cells, which are then harvested and purified to produce the final drug product.

Each step in the creation of semaglutide ensures that its therapeutic effect is sustained over time, making it a breakthrough treatment for type 2 diabetes and weight management.

How Semaglutide is Made: The Manufacturing Process

The manufacturing process of semaglutide is sophisticated and involves several critical steps to ensure the quality and efficacy of the final product. Below is a step-by-step guide that outlines how semaglutide is made:

1. Genetic Engineering: First, the gene sequence encoding the semaglutide peptide is inserted into the DNA of yeast cells. This recombination process is carefully controlled to ensure that the yeast can produce the peptide accurately and efficiently.

2. Cultivation: The genetically engineered yeast is then grown in large fermentation tanks with carefully monitored conditions like temperature, pH, and nutrient supply to optimize cell growth and peptide production.

3. Harvesting: Once the yeast cells have produced a sufficient amount of the peptide, they are harvested and the peptide is isolated from the cells and other components of the fermentation broth.

4. Purification: The isolated peptide then undergoes a series of purification steps to remove any impurities. Advanced techniques like chromatography are utilized to achieve a high purity level of the active ingredient.

5. Conjugation: The purified peptide is chemically conjugated to a fatty acid chain. This step is key to increasing the peptide’s stability in the bloodstream and prolonging its activity.

6. Formulation: After conjugation, the semaglutide is formulated with other non-active ingredients to prepare it for administration. This may include stabilizers, preservatives, and buffers to ensure the drug’s stability and efficacy.

7. Quality Control: Each batch of semaglutide undergoes stringent quality control testing to verify its purity, potency, and biological activity. This includes tests for sterility, absence of contaminants, and correct peptide structure.

8. Packaging: The final product is filled into dosing pens or vials under aseptic conditions and packaged for distribution.

9. Distribution: At the end the packaged semaglutide is then distributed to healthcare providers and pharmacies, making sure it is stored and handled according to precise conditions to maintain its efficacy until it reaches the patient.

Each step is performed in compliance with regulatory standards and good manufacturing practices (GMP) to ensure that the semaglutide provided to patients meets the highest quality and safety standards.

Must Read: How To Reconstitute Semaglutide: A Complete Guide

Mechanism of Action of Semaglutide

Semaglutide works by acting like a hormone called glucagon-like peptide-1 (GLP-1), which is released after we eat. This hormone is important for controlling how our body uses glucose and regulates our appetite. Here is how semaglutide works within the body:

1. Glucose-Dependent Insulin Secretion: Semaglutide helps the pancreas release more insulin when blood sugar is high. This lowers blood glucose levels effectively without causing low blood sugar [1].

2. Decreased Glucagon Secretion: Along with increasing insulin, semaglutide also suppresses the secretion of glucagon — a hormone that usually raises blood glucose levels. With less glucagon, there is a decrease in hepatic glucose production, which further helps in reducing blood sugar levels [2].

3. Delayed Gastric Emptying: It slows down the rate at which the stomach empties food into the small intestine after a meal, which can reduce the rise in blood sugar levels post-meal.

4. Appetite Suppression: GLP-1 is known to have appetite-suppressing effects and semaglutide works by acting on GLP-1 receptors to decrease hunger and food consumption. This can help with managing weight. [3].

5. Preservation of Beta Cells: Semaglutide has also been shown to preserve β-cell function, which is responsible for producing insulin in the body. This is important in preventing or slowing down disease progression in type 2 diabetes patients [4].

Semaglutide works by connecting with specific GLP-1 receptors, resisting breakdown by enzymes, and staying in the body for a longer time. These actions help the drug effectively treat type 2 diabetes and assist with weight loss as part of a comprehensive weight management program.

Also Read: Why Am I Still Hungry on Semaglutide? Unveiling The Truth

Potential Side Effects of Semaglutide

Semaglutide is a powerful medicine that helps control type 2 diabetes and promotes weight loss. However, it’s important to know about the possible side effects.

Some common side effects that patients may experience include:

  • Nausea
  • Vomiting
  • Diarrhea
  • Constipation
  • Abdominal pain
  • Dizziness
  • Fast heartbeat
  • Indigestion
  • Loss of appetite
  • Heartburn

These are usually mild to moderate in severity and often decrease over time as the body adjusts to the medication.

However, there are more serious side effects that, although less common, require immediate medical attention. These include:

  • Severe hypoglycemia when used with other diabetes medications
  • Pancreatitis
  • Gallbladder problems
  • Kidney problems
  • Increased risk of thyroid C-cell tumors

Patients should also check for other symptoms like unusually severe abdominal pain, persistent nausea or vomiting, yellowing of the skin or eyes (jaundice), or signs of a severe allergic reaction like difficulty breathing or swelling of the face, lips, or throat.

Additionally, semaglutide should not be used in people with a personal or family history of medullary thyroid carcinoma or patients with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).

Must Read: Can Semaglutide Affect Your Period? Everything You Need to Know


In conclusion, semaglutide is a big step forward in managing type 2 diabetes and obesity. It works by acting like natural hormones and affecting different body processes. It’s been proven to lower blood sugar and help with weight loss. However, it’s important for patients and doctors to be aware of its possible side effects and check closely for any negative reactions. When used correctly and under medical supervision, semaglutide can be a valuable part of improving the lives of people with these conditions.


What is the dark side of semaglutide?

While semaglutide is highly effective in managing type 2 diabetes and aiding weight loss, its ‘dark side’ includes potential serious side effects such as severe hypoglycemia, pancreatitis, gallbladder issues, kidney problems, and an increased risk of thyroid C-cell tumors. Other concerns involve the exacerbated risk for individuals with a history of medullary thyroid carcinoma or MEN 2 syndrome. It’s crucial for patients to discuss these risks with their doctor and undergo regular monitoring while on this medication.

What is the raw material of semaglutide?

Semaglutide is a synthetic peptide that is derived through a complex process involving recombinant DNA technology. The raw material for semaglutide is a fusion of a modified yeast strain, typically Saccharomyces cerevisiae, with a precursor DNA sequence that codes for the semaglutide peptide. The yeast is then cultured and undergoes fermentation to produce the semaglutide peptide, which is later isolated, purified, and formulated into the medication.

What is the chemical name of semaglutide?

The chemical name of semaglutide is `l-​Arginyl-​2-​phenylalaninepenta-​l-​lysyl-​l-​threonyl-​N²-[N-​[(N³-​hexadecanoyl-l-​γ-​glutamyl)​-​l-​lysyloxy]​carbonyl]-​l-​histidyl-​N⁶-​[N-​[(N⁵-​(2-​methylhexahexanoyl)​-​l-​γ-​glutamyl)​-​diaminobutyryl-​l-​lysyloxy]​carbonyl]​-​l-​phenylalaninamide`. It is a GLP-1 analog used for the treatment of type 2 diabetes and as an adjunct to diet and exercise for chronic weight management in adults.

How does semaglutide compare to other GLP-1 receptor agonists?

Semaglutide is a medication that stands out because it lasts longer in the body compared to other similar drugs. This means it only needs to be taken one time in a week instead of more frequently. This convenience can help patients stick to their treatment plan and achieve better control of their blood sugar levels and weight. Studies have shown that semaglutide is more effective at reducing blood sugar levels and promoting weight loss than other drugs. It’s a strong option for patients with type 2 diabetes and obesity.



The information provided in this article is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Don’t ignore professional medical advice or put off seeking it just because of something you read here. Although we aim to offer precise and current information, we do not guarantee its completeness, accuracy, reliability, suitability, or availability for any purpose. Using the information in this document is at your own risk. We are not responsible for any losses or damages caused by our content.

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