Weight Loss Injections and Diarrhea: Managing Gastrointestinal Side Effects Safely

Article Summary:

• Diarrhea is a common digestive side effect of weight loss injections.
• Diarrhea can occur because of the way that weight loss injections interact with your body’s digestive system.
• Fortunately, diarrhea is normally a short-lived side effect which can be managed at home. If you’re experiencing pain or other more severe symptoms of diarrhea, seek medical advice.Whether you've just started taking weight loss treatment or you're still exploring your options, you probably want to learn more about the potential side effects.

Weight Loss Injections and Diarrhea: Managing Gastrointestinal Side Effects Safely

Although the most common side effects of weight loss injections are mild and easily treatable, they may sometimes cause discomfort. This is particularly true when first starting treatment or moving up a dose. And for many people, diarrhea is a common example of this.

We'll explore why weight loss injections can cause diarrhea, and how to manage symptoms safely.

Weight loss injections and diarrhea

Diarrhea is one of the most common side effects when taking weight loss injections. ^[1] It's most likely to occur during the first few weeks of treatment, while your body’s adjusting. It presents as loose and watery stools, urgent bowel movements and mild abdominal pain.

Although diarrhea may cause discomfort, mild symptoms shouldn't last long and can be managed at home (we'll talk more about that later).

Other common side effects of weight loss injections

As well as diarrhea, clinical trials have shown that nausea, vomiting and constipation are the most common gastrointestinal adverse effects (GI AEs) of weight loss injections. ^[1] It's estimated that between 40-70% of those who use weight loss injections will experience GI AEs at first, or when their dosage is increased. ^[2] Fortunately, these side effects are normally short-lived and can often be managed at home.

When to pause treatment

If you experience viral gastroenteritis (stomach flu) while using weight loss injections, you should pause your treatment until you can eat or drink normally again.

If you're struggling to manage your side effects, speak to your healthcare provider. They may recommend that you trial a dose reduction for 4 weeks, after which it may be suitable to gradually increase again. Don’t change your dose unless advised by your physician.

If you miss a dose, speak to your healthcare provider. Don't ever take a double dose to make up for your missed one.

For more information about safely pausing treatment, speak to your healthcare provider.

When to seek medical attention

Diarrhea is normally a short-term and mild side effect. However, if you experience any of the following symptoms you should seek medical advice:

• Symptoms of dehydration: Increased thirst, dark-coloured urine and infrequent urination, fatigue and light-headedness
• Symptoms that last more than 2 days
• Severe abdominal pain
• High fever above 38°C (100.4°F)
• Blood in your stool

If you experience severe and ongoing pain in your stomach area (potentially moving to your back), it could be a sign of acute pancreatitis. If this occurs, stop taking your treatment and seek urgent medical attention.

How to manage diarrhea while using weight loss treatment

There are several ways to manage diarrhea while taking weight loss injections.

Stay hydrated: GI AEs like diarrhea may lead to dehydration. ^[4] It's really important to drink plenty of fluids while taking weight loss injections, to prevent dehydration and potential kidney problems. You could also try oral rehydration solutions and electrolyte drinks.

Avoid certain food and drink: You may find that some foods worsen diarrhea. These might include high-fat and sweet foods, as well as caffeine and milk products. ^[3] It might be helpful to keep a food diary, to identify which foods and drinks affect you so that you can take steps to avoid them.

Adjust your eating habits: While you're experiencing diarrhea, it's often best to eat smaller meals throughout the day. This should also help your body to adjust to your treatment. Bland foods are best until the symptoms have passed.

Over-the-counter treatments: Some over-the-counter anti-diarrhea medicines may be suitable while you're taking weight loss injections. Be sure to check with your healthcare provider before you take any additional medication.

Try to rest: If possible, give your body the chance to rest and recover. Experts recommend 7-9 hours of sleep a night to support health. ^[5] Building better sleep habits may also support your weight loss journey.

Diarrhea is a common side effect of weight loss injections. Fortunately, in most cases it goes away on its own within a few days and can be easily managed with small lifestyle adjustments. If you have any concerns about the side effects of your weight loss treatment, talk to your healthcare provider.

Find out what treatment is suitable for you with MedExpress.