Update: So we took our girl Bailey to the vet for the missing fur on her sides. Its been this way since about May (she turned 1 last december), weve tried missing link and first mate grain free food but no changes. I have strong reason to believe it is seasonal flank alopecia but wanted to confirm with the vet. When we first got there he said we were probably right and melatonin wont hurt, but then he went on to say he wants to rule out dermatitis and other issues and would like to do a biopsy and bloodwork and keep her overnight. Which would mean she would need stitches and to be put out (poor bailey has been through alot in her 2 years of life...cherry eye ...etc). The areas are NOT bothering her or hot to touch (im only concerned cosmetically and people are always asking whats wrong with her) So i said to the vet that i would like to try melatonin first before we got the ivasive route and after that when i asked him how much melatonin to give her he wouldnt give me any information... i felt like he was doing it for the money, especially when at first he said were probably right, im not putting my dog through surgery if she doesnt need it. Im going to the health food store tomorrow to get some melatonin. im wondering how much to give her (shes 60 pounds) when to give it to her...with or without food...how many times a day. has anyone had this expericnce before and used melatonin to treat it? Could you please help....any information would be great!!! Thanks!!!