When starting medications such as Ozempic, Wegovy, or Zepbound, patients are often met with a rapid-fire list of potential side effects in advertisements. However, navigating these treatments requires more than just listening to a disclaimer. According to Dr. Kristi Kratovil, clinical lead for obesity medicine at Sentara Health, patients should feel fully informed and empowered before beginning any new medical therapy.

Understanding How GLP-1 Medications Function

GLP-1 drugs work by mimicking the natural hormone produced in the small intestine. They regulate blood sugar and appetite by prompting insulin release, slowing gastric emptying, and signaling satiety to the brain. While naturally occurring GLP-1 breaks down in minutes, synthetic versions remain active for days or weeks. This extended duration is responsible for both the medication's effectiveness and its potential side effects.

  • Slower Digestion: By keeping food in the stomach longer, these drugs help you feel full, though this can lead to nausea and indigestion, especially after consuming heavy or spicy meals.
  • Appetite Regulation: Beyond hunger, these drugs influence the brain's reward circuitry, potentially reducing "food noise" and cravings.
  • Blood Sugar Control: They enhance insulin production while suppressing glucagon, assisting those with type 2 diabetes in maintaining stable glucose levels.

Common Side Effects and Adjustment Periods

While reports of side effects vary, clinical data indicates that the vast majority of gastrointestinal issues are non-serious. The most frequent complaints include:

«Your body is good at telling you what you should and shouldn't be eating on these medications,» notes Dr. Kratovil.
  • Nausea and Cramping: Often the most common initial reactions, these typically subside as the body acclimatizes.
  • Vomiting: Can occur, particularly following large, fatty meals.
  • Digestive Irregularities: Constipation is frequent due to slowed digestion, while diarrhea may occur due to receptor stimulation in the colon.
  • Fatigue and Headaches: Frequently reported during the early phases of treatment or after dose escalations.
  • Gas and Bloating: The result of food fermentation in the digestive tract, often manifesting as "sulfur burps."

Managing Side Effects and Long-Term Health

Most symptoms peak during the initial weeks of treatment or following a dosage increase. To minimize discomfort, medical experts suggest the following strategies:

  • Gradual Escalation: Work with a provider to increase doses slowly to allow the body to adjust.
  • Nutritional Focus: Prioritize protein intake to preserve lean muscle mass and choose small, balanced meals. Avoid highly processed, greasy, or sugary foods.
  • Hydration: Maintaining consistent fluid intake is critical to mitigating nausea and preventing dehydration.
  • Physical Activity: Resistance training is highly recommended to counteract potential muscle loss during rapid weight reduction.

When to Consult Your Physician

While many side effects are manageable, patients should contact their healthcare provider if symptoms worsen over time, if they experience severe abdominal pain, or if they are unable to maintain adequate nutrition or hydration. Additionally, always discuss the use of GLP-1 medications with your surgical team before any scheduled procedure, as they may require a temporary pause in treatment.