https://www.gardenoflife.com

http://1-thyroid.com/order.php?gclid=Cj0KEQjw5YfHBRDzjNnioYq3_swBEiQArj4pdHUHEd06vzKmMjNs89hlcKXa_FRrkiu3jlYoR3JMvEgaAjvg8P8HAQ

Take 100 mg 1-2 every 4-6 hours as needed

http://www.sourcenaturals.com/

Good Earth is one of the only places I've been able to find this product. You can always try amazon.