Medication Storage Reference
Check storage conditions, beyond-use dates, and discard timelines for 20+ injectable medications. Enter your open date — get your discard-by date.
Pre-mixed / oil-based preparation
Oil-based. Store at controlled room temperature. Protect from light.
Discard by
90 day storage window from date opened
Days remaining
Storage window
0% elapsed
Quick Reference Table
Understanding Beyond-Use Dates
Expiration Date vs Beyond-Use Date
The expiration date on the box is for the unopened, manufacturer-sealed product. Once you open a multi-dose vial or reconstitute a powder, the beyond-use date (BUD) applies instead — this is almost always shorter than the printed expiration date.
USP <797> Guidelines
USP <797> is the United States Pharmacopeia chapter governing compounded sterile preparations. It sets maximum beyond-use dates based on preparation conditions. For most compounded injectables prepared under standard conditions, the BUD is 28 days refrigerated. Your pharmacy may assign a shorter BUD based on their stability testing.
Storage Best Practices
- Label everything. Write the date opened/mixed and the discard-by date directly on the vial.
- Refrigerator door is not ideal. Temperature fluctuates with opening. Store on an interior shelf.
- Never freeze peptides or HCG. Freezing destroys the protein structure, making the medication ineffective.
- Protect from light. Many medications degrade with light exposure. Keep in the original box or a dark container.
- Inspect before injecting. Discard if you see cloudiness, particles, discoloration, or the solution looks different from when you first mixed it.
- Oil-based injectables are more stable. Testosterone and estradiol in oil last much longer than reconstituted peptides because the oil acts as a preservative and barrier.
Frequently Asked Questions
What does 'beyond-use date' mean?+
The beyond-use date (BUD) is the date after which a medication should not be used once it has been opened, reconstituted, or compounded. It's different from the manufacturer's expiration date, which applies to the sealed product. The BUD is typically much shorter.
Can I use testosterone after it's been at room temperature for months?+
Oil-based testosterone (cypionate, enanthate) is quite stable at controlled room temperature (20-25C / 68-77F). However, multi-dose vials should generally be discarded 28-90 days after first puncture, regardless of storage temperature, due to potential contamination from repeated needle entry. Follow your pharmacy's labeling.
What happens if I use expired reconstituted HCG or peptides?+
Reconstituted peptides and HCG degrade over time, losing potency. Using an expired reconstituted product is unlikely to be dangerous, but it may be partially or fully ineffective. The degradation rate depends on storage temperature — room temperature accelerates it significantly.
Why does bacteriostatic water last longer than sterile water?+
Bacteriostatic water contains 0.9% benzyl alcohol, which inhibits bacterial growth. This makes it safe for multi-dose vials where the rubber stopper is punctured repeatedly. Sterile water has no preservative and is intended for single-use only — bacteria can multiply rapidly once the seal is broken.
My pharmacy's label says a different date than this tool. Which is correct?+
Always follow your pharmacy's beyond-use date. They may have performed stability testing specific to their formulation, or they may be following more conservative guidelines. This tool provides general reference data — your pharmacy label is the authoritative source.
Can I store medications in the bathroom cabinet?+
No. Bathrooms have high humidity and temperature fluctuations from showers. Store medications in a cool, dry, dark place — a bedroom closet or kitchen cabinet away from the stove is better. Refrigerated items should go on an interior shelf, not the door.
What is USP <797>?+
USP <797> is a chapter of the United States Pharmacopeia that sets standards for compounding sterile preparations (including injectable medications). It establishes requirements for beyond-use dating, storage conditions, and contamination risk. Compounding pharmacies must comply with these standards.
Related Tools
Never miss a discard date with the Doseline app — log reconstitution dates, get automatic expiry reminders, and track every vial from first puncture to last dose.
Doseline provides informational tools only. It is not a medical device and does not provide medical advice. Always consult a qualified healthcare provider.
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