Is it ok to refrigerate calcium and vitamin powders?

[Sean o^o]

This might be a dumb question... I am going away for 2 weeks and i will be putting the veggies for my dragon in little bags with calcium or vitamins in each so the person coming to give them food will be able to change the food and such very simply. Is it ok if it is refrigerated?

 

[JumpinJellyfish]

They shouldbe fine. I'd be more concerned with whether the veggies will last the 2 weeks...