Ozempic, a medication originally designed to treat type II diabetes, is gaining increasing attention for its effectiveness in facilitating weight loss in individuals without diabetes who seek rapid results. While it provides significant benefits in glycemic control and reduces the risk of diabetes-related complications, it is essential for both patients and healthcare professionals to be aware of potential side effects for non-diabetics.

Understanding these side effects is crucial for ensuring a safe and effective treatment course. This overview will examine the side effects of Ozempic, as well as safety measures and risk-management strategies to minimize risks and optimize therapeutic benefits.

Introduction

According to the European Public Assessment Report (EPAR), Ozempic, the brand name for Semaglutide, is intended for individuals with type II diabetes mellitus.¹ Semaglutide is a glucagon-like peptide-1 (GLP-1) receptor agonist, typically delivered via a pre-filled pen for subcutaneous injection in the abdomen, thighs, or upper arm. It is usually administered once weekly at any time of day, with or without meals. 

Acknowledging the side effects of Ozempic is essential, as neglecting them may lead to significant impacts on bodily functions and increased health risks. Continue reading to learn about the side effects and conditions for which Ozempic should not be used.

Purpose and function

The intended purpose of Ozempic is to regulate obesity and high blood sugar (hyperglycemia) in patients with type II diabetes. It is typically prescribed when lifestyle modifications fail to deliver the desired results. However, a recent growing trend on social media promotes the use of Ozempic for weight loss among individuals without diabetes and those with otherwise healthy bodies. This has led to an increased demand for Ozempic for vanity weight loss and a dwindling supply for those who rely on it to manage their diabetes.

Ozempic mechanism of action 

Blood sugar, or blood glucose, is the sugar (glucose) present in our bloodstream, providing essential energy for the cells of our body. Maintaining balanced blood sugar levels is crucial because levels that are too high or too low can lead to health complications. The hormone insulin helps to regulate these levels by managing the movement of glucose from our bloodstream into cells for energy and promoting glucagon synthesis and fat storage. Conversely, the hormone glucagon raises blood sugar levels by stimulating gluconeogenesis and glycogenolysis while inhibiting insulin-induced glycogen synthesis. 

In diabetes, the body either produces insufficient insulin or cannot effectively use it, resulting in elevated blood sugar levels and associated complications. Type II diabetes, often linked to obesity and sedentary lifestyles, occurs when the body has limited insulin secretion due to insulin-producing cells being overwhelmed by hormones from adipose tissue, leading to insulin resistance. Ozempic is an effective treatment for this condition.

Ozempic contains Semaglutide, which mimics the naturally occurring glucagon-like peptide-1 (GLP-1) released in response to nutrients. GLP-1 is crucial for glucose homeostasis and signals satiety to the brain.² Semaglutide, as a receptor agonist, binds to GLP-1 receptors, stimulating glucose-dependent insulin release and inhibiting glucagon release. This helps regulate hyperglycemia, suppresses hepatic gluconeogenesis, and slows gastric emptying, enhancing satiety and preventing overeating.³

As demand for Ozempic rises, similar drugs that aid in managing type II diabetes have emerged, such as Saxenda (liraglutide), Trulicity (dulaglutide), and Mounjaro (tirzepatide).⁴ These medications also lower cardiovascular risks, assist with weight loss, and improve glycemic control, though they may differ in dosage frequency, administration, and side effects.

Main side effects

While Ozempic is specific to the GLP-1 receptor, it comes with side effects because the drug also binds to other receptors non-specifically. The main side effects of Ozempic are:¹

Gastrointestinal side effects

The most common side effects of Ozempic include

• nausea, 
• vomiting, and 
• diarrhoea

As a GLP-1 receptor agonist, it can satiate hunger more quickly and effectively by sending signals to the hypothalamus and slowing gastric emptying. 

While the exact reasons for these side effects are still unknown, it is important to note that they can lead to dehydration easily. Therefore, it is essential to replenish fluids through water and electrolyte consumption.

Hypoglycemia

Hypoglycemia refers to low blood sugar levels. Ozempic lowers blood sugar levels, as individuals with type II diabetes often experience hyperglycemia (high blood sugar levels). However, when Ozempic is used by people without type II diabetes, hypoglycemia is more prevalent. Symptoms of hypoglycemia include:

• blurred vision
• difficulty concentrating
• confusion, slurred speech, and 
• drowsiness

which all can pose risks when performing daily tasks such as driving and working.

Pancreatitis

The human pancreas consists of islets of Langerhans, which contain alpha and beta cells responsible for producing insulin and glucagon hormones. With the administration of Ozempic, beta cells could become overloaded, leading to swelling. If a patient is suspected of having pancreatitis, semaglutide should be discontinued, and treatment should not be resumed once confirmed.

Diabetic retinopathy

This condition is commonly associated with hyperglycemia damaging the retina and usually develops from a combination of retinal photocoagulation, treatment with intravitreal agents (eye injections), and vitreous haemorrhage (blood in the vitreous cavity). Individuals with this condition should proceed with Ozempic treatment cautiously, as there have been recorded cases of temporary worsening of diabetic retinopathy due to rapid improvement in blood glucose control.

Precautions and warnings

The following list outlines the conditions and populations that should avoid the use of Ozempic:¹

Type I diabetes mellitus

Patients with type I diabetes mellitus should avoid using Ozempic because it is not a form of insulin replacement. It works in type II diabetes by inducing existing beta cells to produce insulin.

Diabetes ketoacidosis

Ketoacidosis is a condition characterised by the rapid production of ketone bodies due to excessive lipolysis, resulting in lowered blood pH and increased thirst. If a person develops diabetic ketoacidosis, Ozempic should not be used, as it does not serve as an insulin replacement and would render the treatment ineffective.

Pregnant or breastfeeding individuals

Studies in animals have shown that semaglutide causes reproductive toxicity. Therefore, individuals with childbearing potential are advised to use contraceptives, and Ozempic treatment should be discontinued immediately if pregnancy is desired or occurs. Additionally, studies have found that semaglutide is present in the milk of lactating rats, so Ozempic should not be administered during breastfeeding.

Monitoring and management

People taking Ozempic should have regular check-ups to monitor their body condition over time. These check-ups should include: 

• Assessment of blood sugar levels
• Evaluation of blood pH to detect any metabolic acidosis or alkalosis that may arise from diabetes or medication use.
• Liver function tests monitoring liver enzymes (such as ALT, AST, and alkaline phosphatase) to ensure the liver is functioning properly, as Ozempic may affect liver health
• Assessment of cholesterol levels (LDL, HDL, triglycerides) to manage cardiovascular risk, which can be elevated in diabetes patients
• Regularly checking weight to assess any weight loss or gain, as Ozempic can lead to changes in appetite and body weight
• Monitor electrolytes such as sodium and potassium, especially if there are gastrointestinal side effects like vomiting or diarrhoea, which can lead to imbalances
• Discuss any symptoms such as severe abdominal pain, nausea, or vomiting, which may indicate potential pancreatitis
• Diabetic retinopathy screening to check for diabetic retinopathy, as diabetes can lead to vision problems over time
• Routine foot checks for any sores or infections, as diabetes, can lead to neuropathy and increased risk of foot problems

Through these evaluations, the dosage of Ozempic can be adjusted according to each person’s individual needs. Those experiencing adverse effects from Ozempic should contact a doctor immediately to prevent further complications and potentially life-threatening dangers.

It is also important to note that the ongoing trend of off-label use of Ozempic for weight loss, driven by vanity, carries risks and requires careful monitoring by healthcare professionals.⁴ The mechanism of semaglutide is thought to suppress appetite and decrease food intake, resulting in a calorie deficit and subsequent weight reduction. This off-label use is not only potentially harmful, but it also normalises the reliance on weight loss drugs for vanity rather than for medical conditions.

Pharmaceutical companies' marketing strategies that promote drugs for off-label purposes may raise moral concerns about patient autonomy and transparency. Additionally, there are worries regarding the availability of Ozempic and other similar drugs, especially for those with low incomes or insufficient health insurance, which may worsen health disparities.

Summary

GLP-1 receptor activation allows Ozempic, which contains semaglutide, to effectively regulate blood sugar levels, making it crucial for the management of type II diabetes mellitus. While it offers significant benefits, including improved glycemic control and a reduced risk of diabetes-related complications, it's essential to carefully weigh these advantages against potential risks and side effects.

Achieving this balance ensures that patients experience optimal therapeutic outcomes with minimal side effects. Future research on Ozempic may focus on optimizing dosing schedules, evaluating long-term safety profiles, and exploring potential applications in related medical disorders. The goal of this ongoing research is to enhance Ozempic's safety and efficacy profiles, ultimately increasing its utility in treating diabetes and associated health issues.