What is the shelf life of unopened cham?

Unopened cham, or chamomile tea, generally has a shelf life of about 1-2 years when stored in a cool, dark place. The quality may diminish over time, affecting flavor and potency, but it typically remains safe to consume beyond its expiration date if unopened. Always check for any signs of spoilage, such as an off smell or discoloration, before use.