FROZEN VITAMINS

Ups left a box of vitamins outside in 7 degree weather overnight. Are they still good? It would take me weeks to use them up.

was there any condensation evident inside the bottles ? Normally they are packed with a cotton or desiccants to prevent condensation. Other than that ;your general concern is if they are exposed to above room temp. That's when some of them begin to break down.

Your vitamins are okay. Some people keep them in the fridge, but as tom said, they are equipped not to gather condensation in the bottle.