How long does kefir last?

Kefir can last about 1-3 weeks when stored in the refrigerator. Its shelf life depends on factors like the type of kefir, storage conditions, and whether it has been opened. If properly sealed and kept cold, it may still be safe to consume beyond the expiration date, but its flavor and texture may deteriorate. Always check for signs of spoilage, such as off smells or unusual textures, before consuming.