i never reccomend adding supplements when it comes to growth issues. vets even get this wrong many times and start adding vitamin C to diets which can be devastating to the dog. make sure your vet is up to date on growth and growth diseases, as this is an old and disproven treatment.Greta had me concerned as her legs almost looked slightly buckled, and turned. They are very straight now, we added vitamin/calcium supplement from the vet. We really could see it some days and not others. I hope they do straighten out.