Do Vitamin C Expire?

[Astolfo]

I have half a bottle of vitamin C (+bioflavanoids, rutine, hesperidine). It was in my fridge for about 1,5-2 years and got a lot of exposure to light as well. But the expiration date is 2021. Should i take it or throw it off?

 

[Vinny]

I have half a bottle of vitamin C (+bioflavanoids, rutine, hesperidine). It was in my fridge for about 1,5-2 years and got a lot of exposure to light as well. But the expiration date is 2021. Should i take it or throw it off?

Imo, since vit C is used as a preservative, it doesn't expire. I wouldn't throw it, except noticing bad smell /taste.