Specific Cat FDD - HY Food Allergen Management

My cat has had problems with a sensitive stomach for a long time, throwing up repeatedly, not being able to manage her digestion, and not wanting or being able to eat different kinds of cat food. She tolerates this one really well, and combined with probiotics, she's now a very content cat. The only downside with this food is that it often seems to be sold out here or not in stock.