How Long Can Penicillin Be Safely Kept Out of the Refrigerator? A Guide to Proper Storage and Shelf Life

Refrigerators Hub


Penicillin is a powerful antibiotic that is commonly used to treat various bacterial infections. But how long can it be left out of the refrigerator before it loses its effectiveness? Let’s delve into this important question and find out how to properly store and handle this life-saving medication.

Penicillin is a commonly prescribed antibiotic used to treat bacterial infections. It is best stored in the refrigerator between 36-46 degrees Fahrenheit to maintain its potency. But how long can penicillin be left out of the refrigerator before it loses effectiveness?

According to the FDA, most medications, including penicillin, are stable at room temperature for a short time. However, the exact duration can vary depending on the formulation of the antibiotic. Oral suspensions may have a shorter shelf life at room temperature compared to injectable forms.

If you accidentally leave penicillin out of the refrigerator for an extended period, it is advisable to consult with your healthcare provider or pharmacist before using it. They can advise on whether it is safe to use or if a new prescription is necessary.

In summary, storing penicillin in the refrigerator is ideal for maintaining its effectiveness. If left out for a short time, it may still be safe to use, but it’s best to seek guidance from a healthcare professional. Follow the storage instructions provided with the medication to ensure its potency.


1. How long can penicillin be out of the refrigerator before it goes bad?
Penicillin can typically be left out of the refrigerator for up to one hour before it should be discarded.

2. Can I still use penicillin if it has been out of the refrigerator for longer than one hour?
It is not recommended to use penicillin that has been left out of the refrigerator for longer than one hour, as it may have lost its effectiveness and could potentially be harmful.

3. How should I store penicillin if I need to take it with me while traveling or on the go?
If you need to take penicillin with you while traveling or on the go, it is best to keep it in a cooler or insulated bag with an ice pack to maintain its effectiveness.

Leave a Comment