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Teduglutide Dosing Calculator

Teduglutide (Gattex/Revestive): FDA-approved GLP-2 analog for short bowel syndrome.

Pre-filled with the most-reported community reconstitution protocol for Teduglutide. See how 1 mL and 2 mL of bacteriostatic water change concentration and syringe-draw volume, then adjust the calculator below for your own vial.

Quick answer · Community-reported standard

A 5 mg vial of Teduglutide reconstituted with 1 mL of bacteriostatic water yields a concentration of 2.50 mg/mL. At that concentration, a 50 mcg dose of Teduglutide equals 2 units on a U-100 insulin syringe (0.020 mL). Teduglutide is typically administered once daily via subcutaneous injection.

Teduglutide reconstitution: 1 mL vs 2 mL bac water

Bacteriostatic water volume is flexible. Less water means higher concentration and smaller injection volumes; more water means lower concentration and easier dose precision. Both options below are valid for a 5 mg vial.

BAC water addedConcentrationVolume per 50 mcg doseDraw on U-100 syringe (units)
1 mL5.00 mg/mL0.010 mL1 units
2 mL2.50 mg/mL0.020 mL2 units
Based on a 5 mg vial of Teduglutide reconstituted with bacteriostatic water. Insulin-syringe units assume a standard U-100 syringe (100 units = 1 mL).

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Alternative Teduglutide protocols

Beyond the default above, Teduglutide is also reported in the following protocols. Use these as starting points and recalculate with the tool above.

Pediatric SBS Protocol

Community
Dose
0.05 mg/kg once daily
Frequency
Once daily
Duration
Ongoing
Route
Subcutaneous injection

FDA-approved for pediatric patients 1 year and older with SBS-IF requiring parenteral support

Adult SBS-IF (FDA-Approved)

Clinical
Dose
0.05 mg/kg body weight subcutaneous injection once daily. Dose adjustment required for renal impairment (CrCl less than 50 mL/min): reduce to 0.025 mg/kg once daily.
Frequency
Once daily
Duration
Continuous long-term treatment. Efficacy reassessed periodically with parenteral nutrition optimization.

Colonoscopy required before initiation and within 1-2 years of starting treatment, then every 5 years. Monitor for intestinal polyps, biliary disease, and fluid/electrolyte changes.

Pediatric SBS-IF (Ages 1 Year and Older)

Clinical
Dose
0.05 mg/kg body weight subcutaneous injection once daily. Same renal dose adjustment applies.
Frequency
Once daily
Duration
Continuous treatment with regular growth monitoring and parenteral nutrition optimization.

Approved for patients 1 year and older based on Phase 3 pediatric data. Monitor growth parameters in addition to standard safety assessments.

Teduglutide reconstitution & storage

Gattex is supplied as a lyophilized powder. Reconstitute the 3.8 mg vial with 0.5 mL of the provided preservative-free sterile water for injection. Allow the vial to stand for 30 seconds, then roll gently between palms for 15 seconds. Do not shake. The resulting solution should be clear and colorless to light straw-colored. Use within 3 hours of reconstitution.

Store unopened vials refrigerated at 2-8 degrees C (36-46 degrees F). Do not freeze. Protect from light. After reconstitution, use within 3 hours. Store reconstituted solution at room temperature or refrigerated.

Teduglutide dosing FAQ

How much bacteriostatic water should I add to a 5 mg vial of Teduglutide?

The community standard is 1 mL of bacteriostatic water for a 5 mg Teduglutide vial. That gives a concentration of 2.50 mg/mL, so a 50 mcg dose is 2 units on a U-100 insulin syringe. Adding 1 mL instead doubles the concentration to 5.00 mg/mL and halves the draw to 1 units. Less water = smaller injection volume but harder to measure precisely.

How many syringe units is a 50 mcg dose of Teduglutide?

On a standard U-100 insulin syringe, a 50 mcg dose of Teduglutide is 2 units when the 5 mg vial is reconstituted with 1 mL of bacteriostatic water (2.50 mg/mL). If you use 1 mL of bac water instead, draw 1 units (5.00 mg/mL).

What is the standard Teduglutide dose?

Community-reported protocols for Teduglutide typically use 0.05 mg once daily via Subcutaneous injection. 50 mcg is a common starting dose. FDA-approved dose for adults with SBS-IF; dose reduction to 0.025 mg/kg for moderate-severe renal impairment

How long does a vial of Teduglutide last at 50 mcg once daily?

A 5 mg vial of Teduglutide contains roughly 100 doses at 50 mcg per injection. At once daily dosing, that is approximately 100 days (about 14 weeks) of supply per vial. Reconstituted Teduglutide should generally be used within 28 days when refrigerated.

Where do you inject Teduglutide?

Teduglutide is typically injected subcutaneous injection. Common sites reported in the literature and by users include: Abdomen (alternating quadrants), Thighs (alternating legs), Upper arms (alternating arms). Rotate sites with each injection to reduce localized irritation.

Can I use sterile water instead of bacteriostatic water for Teduglutide?

Bacteriostatic water (containing 0.9% benzyl alcohol as a preservative) is strongly preferred for multi-dose vials like Teduglutide because it inhibits microbial growth and lets a single vial be used over multiple weeks. Sterile water has no preservative and should generally be reserved for single-use preparations only.

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Medical Disclaimer

This website is for educational and informational purposes only. The information provided is not intended to diagnose, treat, cure, or prevent any disease. Always consult with a qualified healthcare professional before using any peptide or supplement.