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Semaglutide Dosage Calculator for Weight Loss

Calculate the appropriate semaglutide dosage for weight loss based on your personal health profile and weight management goals.

Enter your current weight in kilograms (kg)
Enter your desired target weight in kilograms (kg)
Enter your height in centimeters (cm)
Enter your age in years (18-100)
Enter your current dosage in milligrams (mg). Leave as 0 if not currently taking semaglutide.

How to Use This Calculator

  1. Enter your current weight in kilograms (kg)
  2. Enter your target weight in kilograms (kg)
  3. Input your height in centimeters (cm) and age in years
  4. Select your gender and any relevant medical conditions
  5. Enter your current semaglutide dosage if applicable
  6. Click Calculate to see your personalized dosage recommendations

Formula Used

Starting Dosage = 0.25 mg/week for 4 weeks
Maintenance Dosage = 2.4 mg/week (adjusted for BMI and medical conditions)

Where:

  • BMI = Weight (kg) / (Height (m))²
  • Weight Loss Goal = Current Weight - Target Weight
  • Dosage Adjustment = Based on medical conditions and tolerance

Example Calculation

Real-World Scenario:

A 45-year-old female weighing 95 kg with a height of 165 cm and a target weight of 75 kg.

Given:

  • Current Weight = 95 kg
  • Target Weight = 75 kg
  • Height = 165 cm (1.65 m)
  • Age = 45 years
  • Gender = Female
  • Medical Conditions = None

Calculation:

BMI = 95 / (1.65)² = 34.9 (Class I Obesity)

Weight Loss Goal = 95 - 75 = 20 kg

Based on standard semaglutide titration schedule:

  • Weeks 1-4: 0.25 mg once weekly
  • Weeks 5-8: 0.5 mg once weekly
  • Weeks 9-12: 1 mg once weekly
  • Weeks 13-16: 1.7 mg once weekly
  • Week 17 onwards: 2.4 mg once weekly

Result: Recommended titration schedule starting at 0.25 mg/week, increasing to maintenance dosage of 2.4 mg/week over 16 weeks. Expected weight loss of approximately 15% (14.25 kg) over 68 weeks.

Why This Calculation Matters

Practical Applications

  • Personalized dosage based on individual factors
  • Reduced risk of side effects through proper titration
  • Optimized weight loss results
  • Improved adherence to treatment plan

Key Benefits

  • Evidence-based dosage recommendations
  • Clear titration schedule for gradual increase
  • Considers individual health factors
  • Helps set realistic expectations for weight loss

Common Mistakes & Tips

Starting semaglutide at the full maintenance dose (2.4 mg) instead of the recommended starting dose (0.25 mg) can significantly increase the risk of gastrointestinal side effects. Always follow the titration schedule to allow your body to adjust to the medication.

Semaglutide works best when taken consistently on the same day each week. Skipping doses or taking them at irregular times can reduce effectiveness and make it harder to manage side effects. Set a reminder to help maintain a consistent schedule.

Semaglutide is most effective when combined with a reduced-calorie meal plan and increased physical activity. Relying solely on the medication without making lifestyle changes will likely result in suboptimal weight loss outcomes.

Frequently Asked Questions

Most people begin to see weight loss within the first few weeks of treatment, but significant results typically become more apparent after 8-12 weeks. In clinical trials, participants achieved an average of 15% weight loss over 68 weeks when combined with lifestyle interventions.

The most common side effects include nausea, vomiting, diarrhea, constipation, and abdominal pain. These side effects are typically mild to moderate and often decrease over time as your body adjusts to the medication. Starting with a low dose and gradually increasing can help minimize these effects.

Yes, semaglutide is actually approved for both weight management and treatment of type 2 diabetes. If you have diabetes and are taking other medications to lower blood sugar, your doctor may need to adjust your doses, as semaglutide can enhance the effects of these medications and increase the risk of hypoglycemia.

Semaglutide is intended for long-term use as part of a chronic weight management program. Most people who stop taking the medication regain some or all of the weight they lost. Your healthcare provider can help determine the appropriate duration of treatment based on your individual response and health goals.

References & Disclaimer

Medical Disclaimer

This calculator provides general dosage recommendations for semaglutide based on clinical guidelines and should not replace professional medical advice. Always consult with a healthcare provider before starting or adjusting any medication. Individual dosage requirements may vary based on your specific health conditions, response to treatment, and other factors.

References

Accuracy Notice

This calculator provides estimates based on current clinical guidelines and should be used for informational purposes only. Individual responses to semaglutide may vary, and dosage adjustments should always be made under the supervision of a qualified healthcare provider. The calculator does not account for all possible individual factors that may affect dosage requirements.

About the Author

Kumaravel Madhavan

Web developer and data researcher creating accurate, easy-to-use calculators across health, finance, education, and construction and more. Works with subject-matter experts to ensure formulas meet trusted standards like WHO, NIH, and ISO.

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health medical-clinical-calculators semaglutide weight loss medical body