The time taken for each type of vitamin should be different!
1) Vitamin A, D
Vitamin A and D are fat-soluble vitamins, so when you digest, it works with fat and is absorbed.
If you don't have adequate amounts of fat, you should eat it after meals because you will lose your vitamin absorption rate.
2)Vitamin B, C
Vitamin B and C are water-soluble vitamins, so if taken in an empty stomach, it's excreted in urine.
So if you eat after meals, you can stay in your body for a long time.
If you divide it up several times rather than take it a lot at once, you can keep the vitamins in your body for a long time.
Since multi-vitamin is different in content from product to product, opinions are divided about how long it takes to eat.
I recommend eating it after breakfast or lunch because it has a lot of activity in the morning.
Vitamin C - https://www.vitabai.com/nature-s-way-vitamin-c-1000-with-rose-hips-250-capsules.html
Vitamin D - https://www.vitabai.com/natrol-vitamin-d3-fast-dissolve-strawberry-flavor-5-000-iu-90-tablets.html