Progressive Professional Tri-40 Review
Progressive Professional Tri-40 is a specialized dietary supplement meticulously formulated to provide comprehensive support for the thyroid gland and the immune system. Manufactured by Progressive Labs, a brand known for practitioner-grade nutraceuticals, this supplement utilizes a blend of glandular concentrates and natural iodine sources to promote optimal physiological function. At its core, Tri-40 features a synergistic combination of raw bovine thyroid concentrate (specifically thyroxin-free), raw porcine spleen concentrate, and raw bovine thymus concentrate. These glandular components are sourced from Argentinian bovine (non-BSE) and porcine origins, and are prepared through a unique process that maintains physiological temperature (not exceeding 37°C) to preserve their integrity and biological activity. This careful processing ensures that the delicate compounds within the glandular tissues remain intact, allowing for their intended supportive mechanisms within the body. Complementing these glandular extracts is iodine, derived from Atlantic sea kelp. Iodine is an essential trace mineral critically involved in the synthesis of thyroid hormones, which are vital for regulating metabolism, energy production, and overall cellular function throughout the body. By supplying 150 mcg of iodine per capsule, Tri-40 aims to assist the thyroid gland in its hormone production, thereby supporting a balanced metabolic rate. The inclusion of spleen and thymus concentrates is based on the understanding that these glands work synergistically with the thyroid. The thymus gland plays a crucial role in immune system development and function, particularly in the maturation of T-lymphocytes. By supporting the thymus, Tri-40 contributes to a healthy immune response. The spleen, another vital organ, is involved in filtering blood, storing blood cells, and playing a significant role in the immune system. The combined action of these glandular concentrates, alongside thyroid support, is designed to foster overall systemic balance and vitality. Progressive Professional Tri-40 is intended to support natural energy levels, promote mental alertness and focus, and contribute to overall well-being. It is particularly aimed at individuals seeking to alleviate symptoms associated with a poorly functioning thyroid, such as fatigue and general discomfort, by supporting the gland's primary responsibility of regulating metabolism and hormone production. The recommended dosage is one capsule daily, or as directed by a healthcare professional. Other ingredients include rice flour, gelatin (for the capsule), and vegetable lubricant. Users are advised to consult a healthcare provider before use, especially if pregnant, lactating, or taking other medications.
Study, Trial or Testing Result SummaryMembersHuman studies
Review Totals and SummaryMembers9 reviews
Biohacker SummaryMembersWhat our biohacker panel says
RAL SummaryMembersThe tier and why
More DetailsMembersBody systems · Combine with · Possible side effects
Supplement FactsIodine 150 mcg · Sea Kelp 50 mg · Raw Thyroid Concentrate 40 mg
| Iodine (from kelp) | 150 mcg | 100% |
| Sea Kelp | 50 mg | † |
| Raw Thyroid Concentrate (thyroxin free) | 40 mg | 1% |
| Raw Spleen Concentrate | 40 mg | † |
| Raw Thymus Concentrate | 40 mg | † |
Directions: One capsule daily, or more, as directed by a health care professional.
Label source: the brand's label · Report a label change
Graded October 23, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.

