Miss M got constipated until I switched to goats milk formula. Its more expensive, but I didn't have to give her anything else to make her go, it just digested better in her belly

I compared the tins the other day - goats milk formula has no iron added to it, all other cows milk formulas do. So I think that is her problem, she just can't handle the iron. Even now (at nearly a year) I have switched her to cows milk formula and she has days where she has really really rabbit pellet poos and other days where they are just paste.

I'm hoping that when she goes on plain cows milk that she will be fine.

I hope you find a solution that works for you because its not fun searching around for something that works.

I think you are supposed to also last out the tin before making a decision to switch.