Thyroid Supplement Reviews can help pick the best thyroid supplement to combat hypothyroidism, an underactive thyroid. Thyro-Slim is Maximum Human Performance’s patented weight loss supplement that is said to help boost metabolism and support the thyroid gland. We think its really cool that a supplement is patented, but is there really a need to do so? Maybe its just for their marketing platform, as the word patented seems to be around everywhere with Thyro-Slim. Lets see how Thyro-Slim does a thyroid support supplement.