How long do vitamins last in multivitamin juice? I like to drink multivitamin juice similar to this, but it takes me a 3 or 4 days to drink whole carton.

How long will these added vitamins last, when kept in the refrigerator?

How long will they last, when I keep the juice in a room temperature?

I'm not asking how long the juice will be safe to drink, but only about the vitamin content (A, C, and various from the B group).
If you drink up your juice within 3 to 4 days, the vitamin content will not decrease significantly. Usually, if properly stored, vitamis last for years.

Here is a link to some more information. Although not specifically talking about juice, I still found it informative: https://labdoor.com/article/do-vitamins-go-bad