My Grown Daughter's 75 Lb Lab About 14 Mo Old

my grown daughter's 75 lb lab about 14 mo old just this AM ate about 120 vitamin D3 pills and she drove him about 100 miles to a vet clinic where they took a blood test which they said was normal and gave her a packet of 4 grams of cholestyram powder to mix with his food They told her to have him have a blood test every day for the next 4 days, I'm glad she found someone as this is a Sunday. I wish he was on an iv now. My daughter is beside herself. What do you see as an outcome for this dog? Thank you so much.
my email is YYYY@YYYY