Nature-Throid

Discover the Nature-Throid difference.

NatureThroid Bottle

Trusted for more than 80 years, Nature-Throid was released in the 1930s, making it one of the first available medications for hypothyroidism. To date, Nature-Throid has never been FDA recalled for inconsistent T4 or T3 hormones. The hypoallergenic and affordable medication is still in high demand by doctors and patients alike.

  • T4 & T3 replacement hormones (desiccated porcine thyroid)
  • Thyroid cofactors (T1, T2, calcitonin and iodine) naturally occur in trace amounts
  • Hypoallergenic
  • Gluten free
  • Does not contain any artificial colors or flavors, corn, peanut, rice, gluten, soy, yeast, egg, fish or shellfish

How to Use

Take Nature-Throid in the morning on an empty stomach 30-60 minutes prior to food or caffeine with an 8oz glass of water; unless otherwise instructed by your physician. If you’ve already eaten, these medication can be taken two hours after consumption with an 8oz glass of water, after which you must wait 30-60 minutes before again consuming food or caffeine. Some medications and supplements may lower the effectiveness of Nature-Throid when taken simultaneously, so it is important to take Nature-Throid at least one hour before any other medication. Calcium supplements, iron products, or antacids need to be taken four hours apart. Some foods may cause your body to absorb less Nature-Throid , including walnuts, infant soy formula, cottonseed meal and high-fiber foods. Talk to your doctor about adjusting your dose if you consume these foods. Keep out of reach of pets and children.

Available Strengths

Nature-Throid is available in 13 strengths ranging from ¼ grain (16.25 mg) to 5 grain (325 mg).

Roll over the images below to zoom.

pill pill

¼ Grain (16.25 mg)

9.5 mcg T4, 2.25 mcg T3

pill pill

½ Grain (32.5 mg)

19 mcg T4, 4.5 mcg T3

pill pill

¾ Grain (48.75 mg)

28.5 mcg T4, 6.75 mcg T3

pill pill

1 Grain (65 mg)

38 mcg T4, 9 mcg T3

pill pill

1 ¼ Grain (81.25 mg)

47.5 mcg T4, 11.25 mcg T3

pill pill

1 ½ Grain (97.5 mg)

57 mcg T4, 13.5 mcg T3

pill pill

1 ¾ Grain (113.75 mg)

66.5 mcg T4, 15.75 mcg T3

pill pill

2 Grain (130 mg)

76 mcg T4, 18 mcg T3

pill pill

2 ¼ Grain (146.25 mg)

85.5 mcg T4, 20.25 mcg T3

pill pill

2 ½ Grain (162.5 mg)

95 mcg T4, 22.5 mcg T3

pill pill

3 Grain (195 mg)

114 mcg T4, 27 mcg T3

pill pill

4 Grain (260 mg)

152 mcg T4, 36 mcg T3
Temporarily unavailable

pill pill

5 Grain (325 mg)

190 mcg T4, 45 mcg T3
Temporarily unavailable

Nature-Throid Ingredients

Nature-Throid was formulated with the following ingredients:

Active Ingredient:

  • Thyroid USP (desiccated porcine thyroid)

    *Lactose Monohydrate (Lactose is not added to our formula but it is already present in Thyroid USP raw material as a diluent per USP (United States Pharmacopeia). Lactose is not contraindicated for individuals with allergies to dairy, as lactose is a milk sugar (vs. dairy allergies, which are caused by proteins in milk). It is, however, contraindicated for individuals with lactose intolerance. We have had many physicians reporting no side effects while using Nature-Throid with lactose intolerant patients. The amount is very small – less than 5 mg. per 1 Grain vs. 12,000 – 15,000 mg. in a typical 8 fl. oz. glass of milk.)

Inactive Ingredients:

  • Colloidal Silicon Dioxide
  • Dicalcium Phosphate
  • Magnesium Stearate
  • Microcrystalline Cellulose
  • Croscarmellose Sodium
  • Stearic Acid
  • Opadry II 85F19316 Clear – tablet coating