Does Lactulose expire? 

Does Lactulose expire?

Yes, Lactulose does expire. It usually comes with a shelf-life of about 3 years. However, the way you use and store it can make a huge difference. Make sure you do not insert a used spoon into the container or leave it open. 

This can result in microbial contamination and your Lactulose will go bad way earlier than it should. In general, Lactulose expiry does not make it toxic but it can start to lose its effectiveness with time. 

What are the possible dangers associated with the use of expired Lactulose? 

Expired Lactulose is generally not considered dangerous and it does not pose any health risk. However, it will not benefit you either, especially if it expired quite a while ago. 

This is because Lactulose begins to lose its effectiveness as a laxative and it will not facilitate your bowel movements. This is why FDA has recommended not using expired medications (1). So, make sure you opt for an unexpired Lactulose if you are concerned about your bowel movements. 

What to do if you have used expired Lactulose? 

If you have used expired Lactulose, you don’t need to worry as it won’t harm your health. However, I’d recommend getting a new one if you wish to see guaranteed results of Lactulose. If you feel stomach pain or any other symptom, talk to your healthcare provider. 

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U.S. Food and Drug Administration. Don’t Be Tempted to Use Expired Medicines [Internet]. Silver Spring (MD): U.S. Food and Drug Administration; 2021 [cited 2022 Oct 24]. Available from: