Thank you for your query,
There will be color variation in infant stool and child passes stool once in a day to once in 3 to 5 days and it is not constipation
and nothing to worry.
Is stool is loose watery, foul smelling or associated with any blood and mucus? If yes the stool is abnormal.
While giving lactogen care should be taken in proper feeding technique and hygienic feeding.
Hope i have answered your query.