Rybelsus is an oral medication containing semaglutide as its active ingredient. Semaglutide is a GLP-1 receptor agonist originally developed as a treatment for type 2 diabetes, but its weight reduction properties have also attracted attention in the field of medical weight management.
While conventional GLP-1 receptor agonists were available only as injections, Rybelsus was approved in the United States in 2019 as the world’s first oral GLP-1 receptor agonist, and received approval in Japan in 2021 as a treatment for type 2 diabetes. 💉 It is a treatment option that is easier to start for those who are uncomfortable with injections.
🔬 Mechanism of Action
Semaglutide, the active ingredient in Rybelsus, works in a manner similar to GLP-1, a hormone naturally secreted by the body. GLP-1 is a hormone released from the small intestine in response to food intake, and plays an important role in regulating blood glucose levels.
✨ Key Actions
1. 🍽️ Appetite Suppression
It acts on the satiety centre in the hypothalamus of the brain to suppress appetite. This leads to a natural reduction in food intake, allowing caloric consumption to decrease without strict dietary restriction.
2. ⏰ Delayed Gastric Emptying
By slowing the movement of food from the stomach to the intestines, a feeling of fullness is maintained for a longer period. This may help reduce snacking and overeating.
3. 📊 Stimulation of Insulin Secretion & Suppression of Glucagon Secretion
It promotes insulin secretion in response to blood glucose levels while simultaneously suppressing glucagon, which raises blood glucose. This contributes to stabilisation of blood glucose levels.
4. 🔥 Promotion of Fat Breakdown
It has the effect of promoting fat breakdown within the body and increasing energy expenditure.
💪 Potential Effects
⚖️ Weight Reduction
In clinical trials, significant weight reduction has been observed in patients taking Rybelsus. Results may vary among individuals, but combining Rybelsus with appropriate dietary therapy and exercise may support more effective weight management.
📈 Blood Glucose Stabilisation
By suppressing postprandial blood glucose spikes and reducing fluctuations in blood glucose levels, it may contribute to the prevention and management of diabetes. Stable blood glucose levels may also make it easier to manage food cravings.
🫀 Visceral Fat Reduction
Along with overall weight reduction, visceral fat reduction in particular may be expected. A decrease in visceral fat may contribute to improvement of metabolic syndrome and prevention of lifestyle-related diseases.
🍴 Improvement of Eating Behaviour
By normalising appetite, dietary control that was previously difficult may become easier to manage. It may become possible to achieve satisfaction with appropriate portion sizes and to reduce binge eating and drinking.
📋 Dosage and Administration
📅 Initial Dosing and Dose Escalation Schedule
Rybelsus requires a gradual dose escalation. This is to minimise side effects and allow the body to adjust to the medication.
- 1️⃣ Initiation Phase (3 mg)
For the first 4 weeks of treatment, Rybelsus 3 mg is taken once daily. During this period, the body’s response is monitored and the presence of any side effects is assessed. - 2️⃣ Maintenance Phase (7 mg)
If the initiation phase is completed without issues, the dose is increased to Rybelsus 7 mg from week 5. For many patients, this dose provides sufficient effect. - 3️⃣ Maximum Dose (14 mg)
If the effect at 7 mg is insufficient, the dose may be increased to Rybelsus 14 mg after a further 4 or more weeks. However, attention should also be paid to an increased risk of side effects.
⚠️ Important Points for Taking the Medication
- 🌅 Take on an Empty Stomach
As Rybelsus is susceptible to the effects of food, it must be taken on an empty stomach (e.g. upon waking). - 💧 Amount of Water When Taking the Medication
Please take the tablet with no more than 120 mL of water. Excessive amounts of liquid may impair drug absorption. - ⏱️ Precautions After Taking the Medication
Please avoid eating, drinking, or taking other medications for at least 30 minutes (ideally 1–2 hours) after taking Rybelsus.
✅ Who May Be Eligible
👥 Candidates for Medical Weight Management
The following individuals may be eligible for medical weight management with Rybelsus:
- 📊 Those with a BMI of 25 or above
- ❌ Those who have not achieved results with conventional dieting methods
- 🍽️ Those who have difficulty controlling their appetite
- ⚠️ Those at risk of impaired glucose metabolism
- 🫀 Those with visceral obesity
🚫 Who Is Not Suitable for This Treatment
The following individuals are not eligible for Rybelsus treatment:
- 🤰 Women who are pregnant or breastfeeding
- 💉 Those with type 1 diabetes
- ⚠️ Those with severe gastrointestinal disorders
- 🏥 Those with a personal or family history of medullary thyroid carcinoma
- 🧬 Those with Multiple Endocrine Neoplasia type 2 (MEN2)
- 🫘 Those with severe renal impairment
- 👶 Those under 18 years of age
⚠️ Side Effects
🩺 Main Side Effects
Side effects of Rybelsus most commonly affect the gastrointestinal system and tend to occur in the early stages of treatment.
💡 Mild to Moderate Side Effects
- 🤢 Gastrointestinal Symptoms
- Nausea: the most frequently reported side effect
- Vomiting
- Diarrhoea
- Constipation
- Abdominal pain
- Indigestion
- 😴 General Symptoms
- Decreased appetite
- Fatigue
- Dizziness
- Headache
- 👅 Other
- Taste disturbances
- Heartburn
- Increased belching
🚨 Serious Side Effects (Rare)
If any of the following symptoms occur, please seek medical attention promptly:
- 💧 Severe hypoglycaemia (cold sweats, trembling, impaired consciousness, etc.)
- ⚠️ Acute pancreatitis (severe abdominal pain, back pain, persistent vomiting)
- 🫀 Gallstones, cholecystitis
- 🚑 Intestinal obstruction
- 👁️ Worsening of diabetic retinopathy
💊 Managing Side Effects
✅ For Mild Gastrointestinal Symptoms
- 🍽️ Eat smaller portions and take your time eating
- 🍕 Avoid fatty foods
- 🥤 Limit consumption of carbonated beverages
- 💧 Make a conscious effort to stay well hydrated
In many cases, these symptoms become less pronounced as treatment continues. However, if symptoms persist or worsen, please consult your physician.
🏥 Treatment Process at Our Clinic
1️⃣ Initial Consultation
- 📝 1. Medical Interview & Examination
We will take a detailed history of your current health status, past medical history, medications you are currently taking, and your dieting history. - 📏 2. Physical Measurements
We will measure your height, weight, BMI, body fat percentage, visceral fat level, and other relevant parameters. - 🩸 3. Blood Tests
We will conduct tests covering liver function, kidney function, blood glucose, HbA1c, lipid metabolism, and more. - 📋 4. Treatment Plan Development
Based on the test results, we will develop a treatment plan tailored to the individual patient. - ✍️ 5. Explanation & Informed Consent
We will provide a detailed explanation of the treatment content, potential effects, side effects, and costs, and begin treatment only after you have fully understood and given your consent.
📅 Follow-Up After Starting Treatment
- 2 weeks later 👉 We will check for side effects and evaluate changes in body weight.
- 4 weeks later 👉 We will assess the effect and consider dose adjustment if necessary.
- 8 weeks later 👉 We will consider increasing the dose to 7 mg and confirm safety through blood testing.
- 3 months later 👉 We will conduct a comprehensive evaluation of treatment outcomes and determine the direction of future treatment.
- Thereafter 👉 Monthly follow-up consultations will be held to provide ongoing monitoring of efficacy and safety.
⏰ Treatment Duration
Results vary among individuals, but the general course of treatment is as follows:
- 📅 Month 1: Adjustment to any side effects and mild weight reduction
- 📅 Months 2–3: Noticeable weight reduction begins to be felt
- 📅 Months 3–6: Period of peak effect
- 📅 6 months onward: Maintenance phase
The treatment duration is determined by the patient’s condition and goals, but a general guideline is approximately 6 months to 1 year.
💰 Pricing
At our clinic, we provide Rybelsus treatment at an appropriate dose based on each patient’s condition and treatment goals.
💊 Rybelsus Prescription Fees
- 💊 Rybelsus 3 mg (first week’s supply): ¥1,980 (tax included)
- 💊 Rybelsus 3 mg (30 tablets): ¥7,700 (tax included)
- 💊 Rybelsus 7 mg (30 tablets): ¥16,000 (tax included)
- 💊 Rybelsus 14 mg (30 tablets): ¥22,000 (tax included)
🏥 Initial Consultation Fee
- ✅ Initial consultation: Free of charge
- 🩸 With blood tests: Additional fee applies
🔄 Follow-Up Consultation Fee
- ✅ Follow-up consultation: Free of charge
※ This is a self-pay treatment and is not covered by health insurance
※ Prices are subject to change without notice
🎯 Tips for Enhancing Treatment Outcomes
🍽️ Combining with Dietary Therapy
While Rybelsus helps suppress appetite, rather than relying on this alone, it is important to maintain a well-balanced diet.
✨ Recommended Dietary Points
- 🥩 Ensure adequate protein intake
- 🥗 Incorporate plenty of vegetables
- 🍚 Limit consumption of refined carbohydrates
- ⏰ Maintain appropriate meal intervals
- 😋 Chew thoroughly and eat slowly
🏃 Combining with Exercise Therapy
Regular exercise is important for supporting the effects of Rybelsus and for maintaining muscle mass.
💪 Recommended Exercise
- 🚶 Aerobic exercise 3–4 times per week (walking, swimming, etc.)
- 🏋️ Strength training 2–3 times per week
- 🚶♀️ Increasing physical activity in daily life
😴 Improving Lifestyle Habits
💤 Improving Sleep Quality
Adequate sleep helps maintain a healthy balance of hormones that regulate appetite.
😌 Stress Management
Chronic stress can be a cause of overeating, so finding appropriate ways to manage stress is important.
💧 Hydration
Adequate fluid intake may contribute to improved metabolism and sustained feelings of fullness.
📊 Comparison with Other Treatment Approaches
🆚 Differences from Conventional Dieting
💪 Reduced Reliance on Willpower
By physiologically suppressing appetite itself, the need for mental restraint is reduced.
🔄 Less Prone to Weight Regain
Because dietary habits are gradually improved over time, weight regain after treatment ends may be less likely.
💊 Differences from Other GLP-1 Receptor Agonists
💊 Available as an Oral Tablet
It is easier to start for those who are uncomfortable with injections, and has less impact on daily life.
🎒 Portability
Compared with injectable medications, it is easy to carry and does not create a burden when travelling.
🔪 Comparison with Surgical Treatment
✅ Low Invasiveness
No surgery is required, and the risk of serious complications is low.
🔄 Reversibility
If the effect is insufficient or side effects occur, treatment can be discontinued.
❓ Frequently Asked Questions
A: Results may vary among individuals, but many patients notice a change in appetite within 2–4 weeks of starting treatment, with noticeable weight reduction typically appearing around 2–3 months. Peak effects are generally seen between 3 and 6 months.
A: The most common side effect is mild nausea, which tends to occur in the early stages of treatment, but in many cases improves within 2–4 weeks. Serious side effects are very rare.
A: By establishing appropriate dietary and lifestyle habits during treatment, the risk of weight regain can be minimised. Gradual dose reduction is also considered.
A: There is a possibility of interactions with certain medications (particularly blood glucose-lowering drugs). Please be sure to inform your physician of any medications you are currently taking.
A: Extreme dietary restriction is not required, but maintaining a well-balanced diet may support more effective outcomes. Nutritional guidance is also provided.
A: Generally around 6 months to 1 year, though this is adjusted according to individual goals and the progress of weight reduction. The optimal treatment duration is determined through regular evaluation.
A: Use during pregnancy, breastfeeding, or by those planning a pregnancy is not recommended. After completing treatment, it is advisable to allow a certain period of time before planning a pregnancy.
A: Use for the purpose of medical weight management is a self-pay treatment and is not covered by health insurance. However, if a diagnosis of type 2 diabetes has been made, insurance coverage may be applicable.
📝 Precautions Before Starting Treatment
✅ Preparation
- 💊 Compile a List of Current Medications
Please bring a list of all medications you are currently taking (including over-the-counter drugs and supplements). - 📋 Review Your Medical History
Please organise information about past illnesses, surgical history, and any known allergies. - 🎯 Clarify Your Treatment Goals
Please consider how much weight you aim to lose and your preferences regarding treatment duration.
⚠️ Precautions After Starting Treatment
- 📅 Attend All Scheduled Consultations
For safe and effective treatment, please be sure to attend all designated consultation appointments. - 📝 Keep a Record of Side Effects
Especially in the early stages of treatment, we recommend keeping a record of any changes in your physical condition or side effects. - 🚨 Know What to Do in an Emergency
Please confirm the contact details to use should symptoms suggesting serious side effects arise.
🔬 Latest Research and Evidence
📊 Results of Large-Scale Clinical Trials
The efficacy and safety of Rybelsus have been confirmed through a number of large-scale clinical trials. These trials have shown significant weight reduction compared with placebo, and long-term safety continues to be assessed.
🇯🇵 Efficacy in Japanese Patients
Clinical trials conducted in Japanese patients have also confirmed outcomes comparable to those seen in Western populations, and efficacy has been demonstrated in relation to the physiological characteristics and lifestyle habits of Japanese individuals.
🔮 Future Outlook
In the field of GLP-1 receptor agonists, the development of newer medications with greater efficacy and a more favourable side-effect profile is ongoing, and the options available for medical weight management are expected to continue expanding.
📌 Summary
Rybelsus may represent a new treatment option for those who have not achieved results with conventional dieting methods. Thanks to the convenience of being an oral medication and its evidence-based efficacy profile, it has become a treatment of choice for many patients.
However, Rybelsus is not a “magic pill that causes weight loss on its own.” Sustained and healthy weight reduction is achieved only when combined with appropriate dietary therapy and exercise, and by working to improve overall lifestyle habits.
At our clinic, we provide individualised treatment tailored to each patient’s condition, offering specialist support from the start of treatment through to reaching your goals. If you are interested in Rybelsus treatment, please feel free to get in touch for a consultation.
Medical weight management is not merely a cosmetic endeavour — it carries the important significance of preventing lifestyle-related diseases and supporting a longer healthy lifespan. Let us begin safe and effective weight management together, under appropriate medical supervision.
📚 Related Articles
- 📖 The Complete Guide to Rybelsus: Effects, Side Effects, and Correct Usage — Explained by a Physician
- ⚠️ Side Effects and Risks of Rybelsus | Understanding the Facts for Safe Treatment
- 🎊 [Shinjuku Branch Only] Mounjaro 5 mg — ¥4,950 per dose! Introducing Our Limited-Time GLP-1 Campaign
※ This treatment is provided on a self-pay basis
※ Treatment outcomes may vary among individuals
※ Risks of side effects and complications will be explained in detail at the time of consultation
The greatest feature of Rybelsus is that it allows patients to begin treatment without the barrier of injections. Many patients tell us that “the urge to eat naturally settled down.” That said, rather than relying solely on the medication, building appropriate dietary and exercise habits alongside treatment is expected to support more sustained results.