Thanks for writing in to Heathcare Magic!
Multivitamins help only if you are malnourished and have deficiency.
If you were taking good food prior to operation then the multivitamin would produce a majestic colored urine and no difference in wound healing
A good local asepsis
and balanced diet would make a difference.
Just to inform you if you really want to take multivitamins then you should take them daily due to their short duration of action
If you have any further query please let me know I would try to answer it for you.
Wish you a great health!