The most well-tolerated & bioavailable iron supplement, Iron Picolinate is another Thorne Research exclusive, & the single iron supplement we most often recommend. A patient who is pregnant or nursing, or who might become pregnant, should not use this product unless otherwise directed to do so by a health-care practitioner. SPECIAL NOTE: Accidental overdose of iron-containing products is a leading cause of fatal poi 1-3 capsules qd