I'm currently taking Thai 'Thiroyd' NDT, but I've been looking up NDT from organic or grass fed sources and came across Thyrovanz which says it is made from the thryoid glands of pasture fed New Zealand beef.
Its only other ingredients are Gelatin, Long Rice Flour, Vegetable Stearate, and Silica.
But in the FAQs it says it cannot give ratios of T1, T2, T3, T4 & calcitonin because it is a natural product and amounts have not been established.
It comes in 50,100,150 & 300mg doses
I'd be interested to know what people with a bit more experience than me think. Am I allowed to post a link to the website?