Z-guggulsterone - known as guggul - is derived from the plant commiphora mukul and has been used in Ayurvedic medicine as an antiinflammatory, antiobesity, thyroid-stimulating, and cholesterol-lowering agent. Tyrosine supplements at the level of 85 to 170 milligrams a day may be helpful to the thyroid. It is a common component of many thyroid support supplements that combine several supplements into one capsule. L-tyrosine is a known precursor to thyroid hormone, and low levels can make it difficult for the thyroid to function properly. Too much selenium can be dangerous, so multivitamin and additional supplementation should not exceed 400 micrograms per day. Selenium supplementation has been shown to reduce inflammation in patients with autoimmune thyroiditis. A 1997 study suggested that high intake of iodine when selenium is deficient may permit thyroid damage. Supplemental selenium appears to offset the effect of high iodine intake on thyroid function. Stress and injury appear to make the body particularly thyroid responsive and selenium deficient. It activates an enzyme responsible for controlling thyroid function by the conversion of T4 to T3. Research has shown that selenium is an important mineral for thyroid function. Zinc, along with selenium, can also help prevent the decline of T3 when you are on a lower-calorie diet.

Zinc is important for thyroid hormone production and conversion, and 15 to 25 milligrams of zinc a day can help ensure optimum zinc delivery to the thyroid. This tiny pearl-shaped supplement contains a guaranteed level of live bacteria in the millions, is very inexpensive, and requires no refrigeration. Some probiotic supplements can be expensive and require refrigeration, but I recommend a patented formula from Enzymatic Therapies, the Probiotic Pearl. You can take yogurt, but the concentration of live cultures in yogurt is not high enough to get a substantial effect, so a probiotic supplement is your best option. They also kill off harmful bacteria, having an antibiotic effect by fighting off various types of infection. Probiotics help proper digestive functioning, which enhances the immune system. According to a report in the European Journal of Clinical Nutrition, the probiotic bacteria known as Bifidobacterium lactis HN019 boosts the activity of various disease-killing immune system cells in healthy adults.