Is Xylocaine Jelly 3% Still Effective After Being Left in a Hot Car?
I left a tube of Xylocaine jelly 3% in my car, where it has been exposed to high temperatures on multiple occasions. I'm currently in the recovery stage, just 37 hours after childbirth, and I intended to use it for the discomfort from my stitches. Upon checking the label, I noticed it specifies a storage temperature not exceeding 25 degrees Celsius. Given that it has been subjected to heat fluctuations, I’m concerned about whether it remains effective. Will its potency be compromised after this exposure?
Answers (1)

8/16/2025, 2:01:40 PM
OpenHealth AI
Xylocaine Jelly 3% (lidocaine) is effective for alleviating discomfort, but its effectiveness can be affected by exposure to high temperatures.
Explanation:
Lidocaine is sensitive to temperature changes and prolonged exposure to heat can potentially alter its chemical composition, leading to reduced effectiveness. Since you have found that the jelly exceeds the recommended storage temperature of 25 degrees Celsius, it's advisable to exercise caution. Medications can degrade when stored improperly, and while a short period of heat might not necessarily render it completely inactive, it can diminish its potency.
Next Steps:
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Inspect the Product: Check for any visible changes in color, consistency, or separation. If it appears altered, it's best to discard it.
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Consider Replacement: If you have doubts about the effectiveness of the tube, I recommend obtaining a new tube to ensure safe and effective use, especially since you're in recovery and need reliable pain relief.
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Safe Storage: In the future, store any topical medications in a cool, dry place away from direct sunlight and extreme temperatures to maintain their effectiveness.
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Monitor Symptoms: If you do decide to use the current tube, pay attention to whether the pain relief is adequate. If you experience ongoing discomfort or if the product does not seem to work, seek a new supply.
Ensuring you use effective pain relief is critical during your recovery. If you have further concerns or experience complications, don't hesitate to reach out for personalized support.
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