Raw Desiccated Thyroid Supplement. Grass Fed New Zealand Beef Neck & Thyroid Gland Capsules for Women and Men. Ancestral Living Ethically Sourced Bovine Supplements for Energy and Metabolism Support

Clinical trials typically use 500-3000mg bovine thyroid glandular daily. Peak Performance Grass Fed Beef Thyroid delivers 500mg per capsule (6 capsules/serving = 3000mg), which we classify as Therapeutic relative to that range.

See the "Also consider" section below for two alternatives. Choose based on form preference (Capsule vs alternatives), dose adequacy, and third-party testing.

Yes — Third-Party Tested. Third-party testing verifies ingredient identity and label accuracy.

Yes — Amazon Subscribe & Save is available for this product. Enrolling locks in a recurring delivery at a reduced per-unit price.

Peak Performance Grass Fed Beef Thyroid is generally considered safe for healthy adults when taken as directed. It is a nutritional glandular supplement, not a prescription thyroid medication. However, consult your healthcare provider before use, especially if you have any thyroid condition.

Do not combine Peak Performance Thyroid with prescription thyroid medications like levothyroxine or Armour Thyroid without physician approval. Glandular supplements may contain trace thyroid peptides that could interact with thyroid medications and alter hormone levels.

Most users tolerate this product well. Potential side effects may include mild digestive discomfort, headache, or changes in energy levels. If you experience heart palpitations, excessive sweating, or anxiety, discontinue use and consult a doctor immediately.

Peak Performance Thyroid is not recommended during pregnancy or breastfeeding. Thyroid glandular supplements have not been studied for safety in pregnant women, and any effect on thyroid hormone levels could potentially impact fetal development. Consult your OB-GYN before use.

Peak Performance processes their thyroid glandular to remove active thyroid hormones (T3 and T4). However, trace amounts may remain in any glandular product. The New Zealand sourcing and freeze-dried processing are designed to preserve nutritional cofactors while removing active hormones.

The recommended serving is 6 capsules daily (500mg each, totaling 3000mg). You can take all 6 at once or split them across meals. Starting with 2-3 capsules and gradually increasing allows you to assess your individual tolerance.