Do vitamins stop working after a long time?

[Deleted member 17920]

I found old zinc and vitamin k2 from 3 years ago do they still work? Can they expire?

 

[Deleted member 15854]

I found old zinc and vitamin k2 from 3 years ago do they still work? Can they expire?

hmm idk, ik stuff like fish oil etc goes rancid with oxygen exposure. for this, i thibk if its unopened, should be good before expiry date

 

[Deleted member 17920]

hmm idk, ik stuff like fish oil etc goes rancid with oxygen exposure. for this, i thibk if its unopened, should be good before expiry date

it’s past expiration date and i opened it before

 

[Deleted member 15854]

it’s past expiration date and i opened it before

ye perhaps but idk, lmk if u find answer coz im curious too

 

[virren]

I found old zinc and vitamin k2 from 3 years ago do they still work? Can they expire?

Yes , check expire date