Sunapee German Shepherds

For those struggling with allergies… Ella has had bad allergies since moving to Arizona. The specialist says it has to do with the dry air, warm climate and plants. We knew she was sensitive to chicken but here it’s citrus trees, grass, and a bunch more trees.
She’s been on Meds for 5 years and they smooth the licking but not much more.
Two months ago I started her on Farmers dog pork blend. No kibble! Add an egg or sardines weekly too. And she now has Cytopoint shot every 4 weeks no pills.
Her coat is oily again, no licking and little scratching. What really matters is her p**p! It’s 1:3 the amount from kibble and doesn’t stink.
I’m hoping we can extend the shots given a few months of new food.
Food is expensive but I can really see the difference in two months!