Weight Loss with Gastric Botox: Effects, Process, and Side Effects

Gastric botox is a non-surgical obesity treatment that involves endoscopically injecting Botulinum toxin into specific areas of the stomach to slow down muscle contractions and reduce appetite. Thanks to this procedure, the time it takes for food to pass from the stomach to the intestines is extended, the feeling of fullness increases, and it becomes much easier for patients to stick to their diet programs. Especially for individuals who cannot reach their target weight through diet and exercise alone, the weight loss journey with gastric botox is a highly effective supportive method.

• The procedure is performed non-surgically in an endoscopy unit under sedation (a mild twilight sleep).
• By slowing down the stomach muscles, food is kept in the stomach for a longer period.
• Injections made into the areas that secrete hunger hormones significantly reduce the feeling of appetite.
• It does not require a hospital stay; patients can usually return to their normal daily lives on the same day.
• The effect of the application lasts an average of 4 to 6 months and does not create any permanent anatomical changes.

What is Gastric Botox and How Does it Work in the Body?

Gastric botox is the application of Botulinum toxin—a substance safely used for years in the medical world to treat various conditions—to the stomach for obesity and weight management. The basic principle relies on temporarily paralyzing the muscles responsible for digesting food and pushing it into the duodenum. When the contraction power of these muscles decreases, the food you consume stays in your stomach much longer. Under normal circumstances, carbohydrates empty from the stomach within 2-3 hours, but after a botox application, this duration is extended over many more hours.

In addition to this, a hunger hormone known as ghrelin is secreted at the top (fundus) of the stomach. During the procedure, injections are also made into this area to lower the release level of the hormone. As a result, the person feels physically full and experiences less of a hormonal urge to eat. The combination of these two mechanisms helps individuals reduce their portion sizes and prevents the desire to snack frequently. Because it involves no anatomical incisions or permanent changes, this method is much easier to tolerate compared to surgical interventions.

Who is a Good Candidate for Gastric Botox?

Many people seeking medical support during their weight loss journey wonder who is eligible for gastric botox. This procedure is an ideal option for individuals who do not meet the criteria for bariatric surgery but still cannot achieve sufficient weight loss through diet and exercise. People with a Body Mass Index (BMI) between 25 and 35—meaning they fall into the overweight or mildly obese category—are the most suitable candidates. It is chosen not just for aesthetic reasons, but to reduce the health risks associated with excess weight.

For the procedure to be performed, the patient's general health must be suitable for endoscopy and sedation. Not having had a gastric balloon inserted or any bariatric surgery in the last 6 months are among the other required criteria. Furthermore, the patient should not have severe obesity (morbid obesity) at a level that would require surgical procedures like a sleeve gastrectomy. In patients with a BMI over 40, the success rate of botox application is quite low compared to surgical methods. A detailed examination by a specialist physician during the decision-making phase is the most fundamental step in determining whether a person is suitable for this treatment.

Pre-Procedure Evaluation and Preparation Steps

When you decide to have gastric botox, a meticulous pre-evaluation process awaits you. For the procedure to be safe and effective, it is essential to fully understand the current health status of your stomach. Complete fasting and avoiding all liquids for at least 6 to 8 hours before the application day is required. This classic endoscopy preparation ensures that your stomach is completely empty during the procedure, which both clears the field of vision and eliminates potential risks associated with anesthesia.

At the time of the procedure, before moving on to the botox injection, a specialist physician conducts a detailed endoscopic examination of the stomach and duodenum. During this stage, it is checked whether there is an active ulcer, severe gastritis, or any suspicious lesions in the stomach. If a serious underlying stomach condition is detected that causes complaints such as severe pain after eating or bloating after meals, the botox procedure is postponed, and treatment for this disease begins first. If no obstacles are found, the injection phase proceeds as planned.

How is Gastric Botox Performed? Step-by-Step Process

The procedure is carried out in specially equipped endoscopy units within a hospital environment. To ensure the patient's comfort and prevent any sensation of pain, medications that induce a mild state of sleep, called sedation, are administered intravenously. This type of anesthesia is different from deep surgical anesthesia; the patient continues to breathe on their own but does not remember the procedure or feel any pain. This makes the process highly comfortable for the patient.

Once the twilight sleep is achieved, a flexible tube with a camera and light source at the tip (endoscope) is passed through the mouth to reach the stomach. After the inner lining of the stomach is examined in detail, Botulinum toxin is injected into 10 to 15 predetermined points of the stomach using a special endoscopic needle. The injections are concentrated mainly in the body of the stomach, which controls contractions, and the top area where the appetite hormone is secreted. This entire process is completed in a short time, averaging 15 to 20 minutes. After the procedure is finished, the patient is taken to a recovery room, kept under observation for about 1-2 hours, and then discharged.

Dietitian-Guided Nutrition and Lifestyle Changes

Gastric botox does not create a miracle on its own; its true success depends on the new eating habits the patient will adopt after the procedure. Therefore, the most critical pillar of the treatment is the nutrition program carried out under the guidance of a dietitian. Starting from the day of the procedure, patients are usually placed on a special liquid detox program for 2 to 3 days. This process supports the resting of the stomach and the healing of the injection sites. Botox applications where a dietitian is not part of the team will certainly not be as effective as expected.

Following the liquid diet, there is a gradual transition to pureed and solid food phases. The dietitian prepares a completely personalized nutrition plan suited to the patient's lifestyle, favorite foods, and metabolic rate. The main goal is to turn portion control into a lasting habit by taking advantage of the reduced appetite and quick feeling of fullness. It is not possible to lose weight by eating large amounts or consuming high-calorie liquid foods (creamy coffees, sugary drinks, alcohol). Since the stomach emptying time is prolonged, avoiding acidic drinks and overly fatty or spicy foods both accelerates weight loss and protects stomach health.

Gastric Botox Risks, Side Effects, and Contraindications

As with any medical intervention, this procedure has its own unique risks and limitations. Although the risks of gastric botox are frequently researched, it is a very safe method when performed by experienced hands on the right patients. The most common side effects include mild nausea, bloating, and cramp-like pains in the abdominal area, which may last for the first few days after the procedure. These complaints are usually temporary and can be easily controlled with simple medications prescribed by your doctor.

However, this procedure is not suitable for everyone. Those with muscle and nervous system diseases (such as Myasthenia Gravis), those allergic to botulinum toxin, pregnant women, and nursing mothers should absolutely not undergo this application. Furthermore, the procedure is not performed on patients with actively bleeding stomach ulcers, those who have been treated for digestive system cancer in the last two years, or those with severe blood clotting disorders. Although rare, complications such as bleeding at the injection sites or systemic spread of the toxin can occur; therefore, it is of critical importance that the procedure is performed in a fully equipped hospital by specialist physicians.

When to See a Doctor?

Although the recovery process after the procedure is generally quite comfortable, you need to closely monitor your body's reactions. Most side effects are mild and disappear on their own within a few days. However, certain symptoms can be signs of serious complications requiring immediate medical intervention. Being cautious is of great importance for the safety of your recovery process.

If you experience any of the following symptoms, you should visit the nearest emergency room or call the 112 emergency hotline without delay:

• Sudden, sharp, and unbearably severe pain in the abdominal area.
• Persistent severe vomiting that does not respond to anti-nausea medications.
• Noticing fresh red blood or clots resembling coffee grounds in vomit.
• Difficulty breathing, trouble swallowing, or a sudden deepening of the voice (suspected spread of the toxin).
• High fever, severe dizziness, or a feeling of fainting.
• Signs of an allergic reaction such as widespread rash, itching, or facial swelling.

The Process at BHT CLINIC İstanbul Tema Hastanesi

At BHT CLINIC İstanbul Tema Hastanesi, we adopt a multidisciplinary approach to obesity and weight control treatments. Our specialist physicians meticulously evaluate whether the procedure is suitable for you. Once the decision is made, your application is carried out in our state-of-the-art endoscopy units under maximum hygiene and safety standards. The comfort and safety of our patients are kept at the forefront throughout the entire process.

Our expert dietitians, who are an integral part of your treatment journey, prepare personalized programs to restructure your eating habits after the procedure and closely monitor your progress. In case of any unexpected situation you might experience after the procedure or any urgent medical need, our Emergency Medicine specialists and fully equipped emergency department are by your side 24/7. To take a reliable step in your weight loss journey and start your medical evaluation process, you can book an appointment.

Frequently Asked Questions

How much weight can be lost with gastric botox?

The amount of weight loss varies depending on the person's starting weight, age, metabolic rate, and how strictly they adhere to the diet program. Generally, the goal is for patients to lose 10 to 15 percent of their excess weight. On average, a loss of 10 to 20 kilograms is expected over a 6-month period, but this depends entirely on individual effort and lifestyle changes.

How long does the effect of gastric botox last?

The duration of Botulinum toxin's effect in the body is temporary and, by its nature, does not create a permanent state of paralysis. The effect of the procedure begins an average of 3-4 days after the application, reaches its maximum level in the first month, and continues for about 4 to 6 months. At the end of the sixth month, the effect of the medication completely wears off, and the stomach muscles return to their former functions.

How long does the procedure take and is it painful?

The procedure takes an average of 15 to 20 minutes, excluding the preparation phase. Because patients are given intravenous sedation (a mild twilight sleep) during the application, no pain, ache, or discomfort is felt during the procedure. There may be a slight stomach sensitivity during the waking process after the procedure, but this passes quickly.

Can gastric botox be repeated?

Yes, it is possible to repeat the procedure if needed after its effects have worn off. It can be applied 2 or 3 times consecutively in six-month intervals, provided the physician deems it appropriate. However, the primary goal is for the patient to acquire healthy eating habits during the first application and maintain their weight without needing repeated procedures.

Can I exercise after gastric botox?

It is recommended to avoid heavy physical activities for the first few days after the procedure. However, starting from the end of the first week, regular exercise programs can be initiated with the approval of your dietitian and physician. In fact, to accelerate the weight loss process and preserve muscle mass, exercises such as brisk walking, swimming, or light fitness alongside the diet are strongly recommended.

This article is for informational purposes only; please consult your physician for diagnosis and treatment.