How to Store Equine Paste Products Properly

Why Proper Storage Matters

Equine dewormer paste is a pharmaceutical product with an active ingredient that needs to remain stable and potent until administration. Improper storage can degrade the active ingredient, potentially reducing the product's effectiveness. When a dewormer fails to work at full strength, the consequences can include incomplete parasite control and conditions that contribute to resistance development.

Proper storage is especially important for multi-pack purchases like the 6-packs reviewed on our products page, where you may have unused tubes sitting for weeks or months before use.

General Storage Guidelines

While you should always follow the specific instructions on your product's label, most equine paste dewormers share similar storage requirements:

Temperature

• Store at room temperature — typically between 59°F and 86°F (15°C–30°C), unless the label specifies otherwise.
• Avoid freezing. Frozen paste may change consistency and could lose effectiveness.
• Avoid excessive heat. Temperatures above 86°F (30°C) can degrade active ingredients. Do not leave paste in vehicles, uninsulated tack rooms, or direct sunlight during summer.
• Brief temperature excursions outside the ideal range may not cause immediate problems, but prolonged exposure should be avoided.

Light Exposure

• Protect from direct sunlight. UV light can degrade pharmaceutical products over time.
• Store in original packaging whenever possible — the tube and any outer box provide some light protection.
• Keep in a dark location such as a cabinet, drawer, or opaque storage bin.

Moisture

• Keep dry. Moisture can affect packaging integrity and potentially the product itself.
• Do not store in bathrooms or areas with high humidity.
• Ensure tubes are properly capped if they have removable caps, to prevent moisture intrusion.

Barn and Tack Room Storage

Many horse owners store dewormers in their barn or tack room. Consider these factors:

• Temperature fluctuations: Barns and tack rooms may not be climate-controlled. During summer and winter extremes, move pharmaceutical products to a temperature-controlled location.
• Dedicated storage area: Designate a shelf or cabinet specifically for equine health products. This keeps them organized and protected.
• Keep out of reach of children and animals. Treat these products with the same caution as any medication.
• Lockable storage: Consider a lockable cabinet, especially if the barn has frequent visitors or staff who are not responsible for health product administration.

Multi-Pack Storage Tips

When you purchase a multi-pack (like a 6-pack), you will likely have unopened tubes in storage for some time. Here is how to manage them:

1. Check expiration dates on all tubes upon receipt. Arrange them so the nearest expiration date is used first (FIFO — first in, first out).
2. Keep all tubes in their original packaging until ready for use.
3. Label the outer box with the purchase date and expiration date for easy reference.
4. Inspect stored tubes periodically — look for any signs of damage, leaking, or unusual discoloration.
5. Do not store partially used tubes unless the label specifically states they can be resealed and stored. Most single-dose tubes are designed for one-time use.

What NOT to Do

Avoid these common storage mistakes:

• Do not store in a vehicle. Cars, trucks, and trailers experience extreme temperature swings — scorching in summer, freezing in winter.
• Do not store in a refrigerator unless the label specifically instructs you to do so. Most equine paste products are designed for room temperature storage.
• Do not remove products from original packaging prematurely. The packaging protects the product.
• Do not use a product that looks or smells unusual. If the paste has changed color, consistency, or odor, do not use it. Dispose of it properly and use a fresh tube.
• Do not keep products past their expiration date. Expired products should be discarded according to local disposal guidelines.

Traveling With Dewormer Paste

If you need to transport dewormer paste (for example, to a horse show or a new barn):

• Place tubes in an insulated container to buffer against temperature extremes.
• Avoid leaving the container in a parked vehicle for extended periods.
• Bring only the number of tubes you need for the trip.
• Store properly upon arrival at your destination.

For more on this topic, see our article on traveling with horses: deworming considerations.

When Product Integrity Is Questionable

If you have concerns about whether a product has been compromised:

• Do not administer it to your horse out of caution.
• Contact the manufacturer with the lot number and describe the storage conditions. They can advise whether the product is likely still effective.
• Consult your veterinarian if you need a replacement urgently and want guidance on selecting a new product.
• Dispose properly of any products you decide not to use.

Sources and References

• U.S. Pharmacopeia (USP): Storage Conditions and Labeling Standards
• Product-specific label directions (always the primary reference for storage)

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This article is for educational purposes only. It does not constitute veterinary advice. Always consult a licensed veterinarian for guidance specific to your horse.