⁉️BABY TEETHING⁉️Hylands tabs💊💊⁉️

Okay I went to the hospital and they gaved me this tabs that have great reviews on the web.the nurse gaved my baby some she said it will help him ok he did calmed,and she gaved me so many but I don't see an expiration?! Do they expire? Any one have this and doesn't have an exp on your or just mines lol??