hello, i have 3 gsd (5yr,2yr and 3mo) and yes they’re known to shed like crazy especially when climates change throughout the year drastically in MN. I use Dinovite (1/2 cup twice a day) and give them 1/2 oz omega 3 and 6 with their dry food (grain free) once a day. once a week wet food and twice a month fresh raw chicken legs. They hardly at all shed anymore and i love it. their coat is soft and shiny as well.