Priority One Thyroid PlusAVAILABLE in 10 days from ordering Thyroid Plus supplies essential nutrients to healthy thyroid function, along with 65mg per capsule of whole gland thyroid.* Glandular therapy is based on the thought that glandular concentrates support like organs to maintain an already healthy state. Thiamin HCI (vitamin b1) Riboflavin (vitamin B2) Niacin (as niacin niacinamide (50 50)) Magnesium (as magnesium aspartate oxide) Zinc (as zinc picolinate oxide)