About BUD Calculator

A Beyond Use Date (BUD) is the date after which a compounded preparation should not be used. It is determined based on the date the preparation was compounded.

BUDs are assigned based on criteria established in pharmaceutical standards, primarily the United States Pharmacopeia (USP) chapters <795> for non-sterile preparations and <797> for sterile preparations.

Factors that influence the BUD include:

• Type of preparation (sterile vs. non-sterile)
• Physical form (solid, liquid, etc.)
• Storage conditions (room temperature, refrigerated, frozen)
• Stability data of ingredients
• Risk of contamination
• Packaging used

This calculator provides general guidance based on USP standards. To use it effectively:

1. Select the preparation date
2. Choose the appropriate preparation category
3. Select the storage condition
4. Review the calculated BUD

Important: This calculator provides general guidance only. Always refer to current USP guidelines, consider the stability of specific ingredients, and use professional judgment when assigning BUDs.

The shortest BUD should always be used when considering multiple factors (e.g., if an ingredient expires sooner than the calculated BUD, use the ingredient expiration date instead).