Lactulose shelf life?

Shelf life for lactulose depends on the form (oral solution, powder, or enema) and the specific product. The package label is the best source, but here are general guidelines you can use:

- Oral lactulose solution (unopened): typically about 1.5–2 years when stored at room temperature away from light and heat.
- Oral lactulose solution (opened): refrigerate after opening and use within about 4 weeks (28 days). If you’re unsure, discard after 4 weeks.
- Lactulose powder (unopened): similar to the liquid, roughly up to 2 years.
- Lactulose powder (reconstituted): if you prepare a solution, keep it refrigerated and use within 24–48 hours (check the label for exact guidance).
- Lactulose enema: follow the product label. Many enema products are intended for single-use or should be discarded after opening; store per label instructions.

Important safety notes:
- Do not use lactulose after its expiration date.
- If the product looks changed (color, odor, texture) or you see particulates, discard.
- Store as directed on the label (temperature, light exposure, etc.).

If you tell me the exact product name or brand (and whether you’re asking about the oral solution or an enema), I can look up the specific shelf-life information for that product.