Accutane Cumulative Dose Calculator

The Accutane Cumulative Dose Calculator estimates your total isotretinoin intake per kilogram based on daily dose, treatment duration, and body weight. This tool helps dermatology patients verify if their treatment meets the 120-150 mg/kg threshold to reduce acne relapse. Whether you are starting a new regimen, tracking current progress, or planning the end of your therapy, this calculator provides clarity on your recovery journey.

Enter the patient's weight in kilograms (kg)
Enter the daily isotretinoin dose in milligrams (mg)
Enter the total number of treatment days
If already in treatment, enter the cumulative dose already received in mg

How Cumulative Dose per kg Is Calculated

Cumulative Dose per kg represents the total amount of isotretinoin taken over a treatment period relative to your body size. This standard measurement ensures that patients of all sizes receive enough medication to effectively clear acne. The calculation uses a standard medical formula to determine if you have reached the therapeutic threshold.

Cumulative Dose per kg = ((Daily Dose × Days) + Current Dose) ÷ Weight

Where:

  • Daily Dose = Milligrams taken per day
  • Days = Total number of treatment days
  • Current Dose = Cumulative milligrams already received (optional)
  • Weight = Patient weight in kilograms

First, multiply your daily dose by the number of treatment days and add any previous dose to find the total milligrams taken. Next, divide this total by your weight in kilograms to get the specific amount per kilogram of body weight. This method provides a reliable way to track treatment progress.

What Your Cumulative Dose per kg Means

This number indicates whether your total medication intake is high enough to potentially stop acne from returning. Doctors use this specific range to predict long-term success and minimize the chance of relapse.

Below 120 mg/kg

If your result is below 120 mg/kg, you likely need to continue treatment. Reaching this minimum level is crucial for lasting results and reducing the risk of the acne returning.

120-150 mg/kg (Target Range)

A result between 120-150 mg/kg means you have hit the recommended target. This dosage is proven to offer the best balance of effectiveness and safety for most patients.

Above 150 mg/kg

If your result is above 150 mg/kg, you have exceeded the standard recommendation. You should consult your dermatologist about stopping treatment safely to avoid unnecessary side effects.

Important: It is vital to track every day of treatment accurately to ensure this calculation is correct.

Disclaimer: This calculator is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider regarding your specific treatment plan and dosage decisions.

Regularly check your cumulative dose as you near the end of your prescribed course to plan your finish date with your doctor.

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