Around 2.5% of the women who take Tri-Sprintec or another combined birth control pill say their weight changes, but it’s not known how much of this is due to the pill versus the circumstantial factors of everyday life. There isn’t very much evidence to suggest that the combined pill causes weight gain (or weight loss).[popover id=ref2]
If you do find that your weight fluctuates when taking Tri-Sprintec, let a doctor know. They may be able to do something to help.