u should check expiry date before use any things, specially edible things because the date of expiry is 3- 9 months on these things. anyway these things usually has no side effect. after expiry date taste, smell altered but usually give no side effect till they are packed.
if these things are opened than there may be chance of fungus infection in food article. by eating that article there may be chance of loose motion
if u feeling well than there is no need of medicine. if u feel losse motion or nausea
than u need tab donperidon for nausea & pre-probiotic
combination for loose motion.
remain alert in future for date of expiry.