According to the Chinese Materia Medica:
I’m-Yunity® for Dogs
Made from a unique proprietary ingredient extracted from Coriolus versicolor, especially for immune balance and vitality of dogs.
Bottle size: 60 capsules
Dosage: 400 mg per capsule
Based on published clinical study, the best results were achieved when given 100 mg per 1 kg of dog’s body weight per day, which is suggested to split into two equal doses taken with the morning and evening meals.
Your dog should take caps per day