Recipe - Compounding Worksheet
Unauthorized distribution, copying or disclosure prohibited.
These recipes are intended for use by the pharmacy manufacturing departments only.
Sulfamethoxazole / Trimethoprim Oral Suspension   40 mg-8 mg/mL
Lot No Expiry(mm/yyyy) Ingredients Master Formula
    sulfamethoxazole, EP    PWD   
    trimethoprim micronized, USP    PWD   
    Oral Mix SF (Sugar Free)    PO SOLN  qs to 
Recipe Total Quantity:
Final Quantity Desired: mL

Directions: 1. Weigh out powders.
2. In a mortar, mix sulfamethoxazole and trimethoprim powders using a pestle.
3. Add Oral Mix SF using geometric dilution.
4. QS to final volume with Oral Mix SF.

Notes • May also use Oral Mix vehicle (sugar-containing).
• May be stored in amber plastic bottles OR in amber plastic oral syringes.

• This new recipe replaces the prior, archived recipe which used tablets.

Packaging: 100 mL Amber Plastic Bottle

Auxiliary Labels: Can be stored at room temperature or refrigerated
  Shake Well

Storage/Expiry:Refrigerator or Room Temperature: 90 days

Last Date Revised: 19-Oct-21

References:Medisca Canada. Allergen Declaration - ORAL MIX™ SF (Sugar-Free Flavored Suspending Vehicle).
Available from:

Oral Mix SF contains preservatives.
  St-Jean I, Friciu MM, Monfort A, MacMahon J, Forest JM, Walker S, Leclair G. Stability of Extemporaneously Compounded Suspensions of Trimethoprim and Sulfamethoxazole in Amber Plastic Bottles and Amber Plastic Syringes. Can J Hosp Pharm. 2021 Fall;74(4):327-333. PMID: 34602620.
Canadian Journal of Hospital Pharmacy. © Canadian Society of Hospital Pharmacists.
  BUD is NAPRA compliant.
Canadian Journal of Hospital Pharmacy. © Canadian Society of Hospital Pharmacists.

Completed Compound Check
Lot NoDate Prepared Expiry DateTechnicianPharmacist

This content is provided for general information purposes only. It is not intended to replace consultations with a health care professional or to provide medical advice, diagnosis or treatment. Always seek the advice of a physician or other qualified health care provider with any medical or health questions. Alberta Health Services accepts no responsibility for any modification or redistribution of this document and is not liable for any actions taken by individuals based on the information provided, or for any inaccuracies, errors, or omissions in the information in this document. These recipes are to be used as a reference and are not intended to be master formulation records. Not all recipes may be compliant with NAPRA or other standards.