Boron
Boron glycinate
A trace mineral studied for its ability to reduce sex hormone binding globulin — increasing the free testosterone your body can actually use, and supporting the hormonal environment that makes everything else in Foundation work harder.
Glycinate, 10 mg per servingThe mineral that frees the testosterone you already make.
Boron is a trace mineral most men have never heard of, and most formulas ignore entirely. That's a mistake. Within hours of supplementation, boron measurably reduces sex hormone binding globulin — the protein that binds testosterone in the bloodstream and renders it biologically inactive. Less SHBG means more of the testosterone your body produces is actually free to be used. Boron also supports vitamin D metabolism and bone health through overlapping pathways.
Foundation uses boron glycinate at 10 mg because glycinate is the most bioavailable chelated form, and 10 mg is the dose used in the human studies that demonstrated meaningful reductions in SHBG within days of starting supplementation.
Producing testosterone is only half the equation. Boron makes sure you can actually use it.
Most of what your body produces gets bound to SHBG before it can do anything. Elevated SHBG is one of the most common reasons men with normal total testosterone still feel and function like they have low testosterone. The free testosterone number is what matters clinically, and boron directly increases it by reducing the protein that's binding it. None of the other ingredients in Foundation address SHBG directly. Boron fills that gap. It makes the testosterone produced by every other mechanism in this formula actually available to the body that produced it.
Your 90-day timeline.
Boron works faster than almost anything else in Foundation. Some studies show measurable SHBG reduction within the first week of supplementation at 10 mg.
Free testosterone levels reflect the SHBG reduction. This is when the practical effects — energy, libido, strength — are most likely to become noticeable.
Sustained supplementation keeps SHBG suppressed long-term. The anti-inflammatory effects compound over time, supporting the overall hormonal environment.
10 mg. Measurable SHBG reduction within days.
A human study using 10 mg of boron daily showed a significant reduction in SHBG and increases in free testosterone after just one week of supplementation. The same study showed reductions in estradiol, the primary estrogen that competes with testosterone signaling in men. Foundation uses that same 10 mg dose, delivered as boron glycinate for optimal absorption, making it one of the fastest-acting ingredients in the formula relative to dose.
Less SHBG, more of everything else working.
Zinc
Zinc drives testosterone synthesis. Boron frees the testosterone that zinc helped produce. Synthesis and availability working in sequence — one builds the output, the other makes it accessible. It is the most direct pairing on this page, and the reason both are dosed at therapeutic levels rather than token amounts.
Vitamin D3
Boron supports vitamin D metabolism, and both influence bone and hormonal health through overlapping pathways. Boron also raises serum vitamin D levels, so the two ingredients actively amplify each other's effects.
Tongkat Ali
Tongkat Ali releases bound testosterone by reducing SHBG binding. Boron reduces the total amount of SHBG available to bind it in the first place. Two complementary routes to the same free-testosterone result.
Foundation puts all four to work.
The same clinically studied doses, in one daily formula. No fluff, no fillers, no proprietary hand-waving.
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