- If you’re deficient in zinc, vitamin D3, or magnesium, fixing that deficiency will move your bloodwork more reliably than any herbal stack you can buy – I’ve watched this play out across hundreds of clients since 2009.
- Most men eating a modern diet are low in at least two of these three – even men who eat “well.” The deficiency ranges are wider than most people expect.
- Supplementing when you’re replete doesn’t do much. That’s not a flaw in the protocol, it’s the point – test first, supplement based on what you find.
- The sequencing principle: run foundations for 60-90 days, test again, then decide whether you need anything beyond this stack. Most men don’t.
- If you’re already considering tongkat ali, fadogia, or anything with a Latin species name – stop and run a panel first. Aaron’s case below will explain why total T alone isn’t the number you should be optimizing from.
I have a folder on my laptop I’ve been adding to since 2009. It started as a clean spreadsheet tracking client bloodwork and protocol notes. It is now, charitably, a document that resembles organized chaos – handwritten margins from when I’ve printed things out, protocol edits with three different dates, bloodwork comparisons from clients who tested every 60 days for two years. Nobody else could read it. I can barely read it. But what comes through consistently, across 200+ men and over a decade of watching protocols succeed and fail, is this: the men who spent money on exotic supplements before fixing their foundations almost always wasted that money.
This isn’t an argument against supplements. I run a full supplement protocol through PowerandBulk.com and my Anabolic Alchemy program. But there’s a sequencing logic behind what I recommend and when I recommend it – and the three supplements in this article come before anything else on the list, every time.
Zinc picolinate. Vitamin D3 with K2. Magnesium glycinate.
Three supplements. Combined cost: probably $35-50 a month if you source them well. These three form what I call the foundation stack, and if you get bloodwork done before and after a 90-day run of them, you will understand better than any supplement guide could explain why I put them first.
Why “foundations first” is more than a cliché
Jake Brennan was 26 when he first contacted me. Electrician apprentice out of Tulsa, total testosterone at 380 ng/dL, which is genuinely low for a 26-year-old. He was dipping Copenhagen long cut – four to five dips a day – and living on drive-thru and energy drinks. Physical job all day, came home exhausted.
He’d already been looking at supplement stacks online. He sent me a list of about eight products he was considering – two “testosterone booster” blends, a couple of individual herbs, an estrogen blocker. Probably $180 a month worth of stuff.
I told him to hold off and get bloodwork done first. Zinc came back low. Vitamin D came back at 22 ng/mL – (optimal is generally considered 50 ng/mL or above; anything under 30 is a meaningful deficiency) – which is common for someone who doesn’t spend time outside despite Oklahoma’s sun. Magnesium wasn’t directly tested, but I had him start glycinate anyway based on his diet profile and sleep quality.
Two things first: he quit the dip, switched to higher-protein breakfasts. Eight weeks later, before we added any supplementation, his T had climbed to 510. Then we added zinc picolinate at 30mg and vitamin D3 at 5,000 IU with K2 MK-7. At month six, he tested at 680.
He never bought any of those eight products he was considering. He didn’t need them.
This pattern is not unusual. It repeats across my practice in different forms, with different deficiency profiles, different starting points. The mineral deficiencies are silently suppressing hormonal function, and the exotic supplements people want to add on top don’t overcome that suppression – they just cost money on top of a broken foundation.
Zinc: why the dose and the form matter more than people think
Zinc is involved in every stage of testosterone synthesis. The (Leydig cells) in the testes that produce testosterone require zinc as a cofactor. LH receptor function depends on it. Aromatase – the enzyme that converts testosterone to estradiol – is modulated by zinc status. If you’re deficient, production drops and conversion dynamics shift in the wrong direction.
The deficiency prevalence is higher than people expect, especially in men eating processed food, in athletes with high sweat output, and – as in Jake’s case – in men who use nicotine products. Tobacco specifically depletes zinc and competes with its absorption.
Sam Reichert is the other zinc case I’ll use here because his is completely different from Jake’s and illustrates a different mechanism. Sam was 29, PhD student in chemistry, Madison Wisconsin. Vegetarian – not vegan, but no meat. Total T at 440, ferritin 28 (low), vitamin D at 18 ng/mL.
His zinc serum came back technically within range – but he was eating a high-phytate diet. (Phytates are compounds found in grains, legumes, and seeds that bind to minerals like zinc in the gut and dramatically reduce how much you actually absorb) A vegetarian eating a lot of legumes and whole grains can have adequate dietary zinc intake and still run functionally low because almost none of it gets through. This is why I push vegetarian clients toward a zinc test rather than just dietary assessment.
Sam switched to zinc bisglycinate (the bisglycinate form absorbs better in his case due to GI sensitivity, though I typically start with picolinate) at 25mg. Within his broader protocol – which also included B12 and iron correction – his T climbed to 690 by month seven. I can’t isolate the zinc contribution from the other changes, but the trajectory started moving as soon as the deficiencies were addressed.
Dosing I use: 25-40mg of zinc picolinate or bisglycinate daily, taken with food. Above 40mg long-term, you start competing with copper absorption, so I watch the zinc-to-copper ratio if someone needs the higher end. I’ll cover this in more depth in the zinc and testosterone deficiency article, which gets into the testing piece specifically.
Three forms I use regularly: picolinate (most common, good absorption), bisglycinate (gentler on GI, useful for sensitive clients), and monomethionine (the ZMA form – fine but not my preference when buying standalone). Two forms I don’t bother with: oxide (minimal absorption, mostly turns into a laxative) and sulfate (similar story).
Vitamin D3: they named it wrong
I’ll say this briefly here and expand on it in the vitamin D article, which makes the full mechanistic case. But the short version is this: vitamin D3 (cholecalciferol) is not a vitamin in the functional sense. It’s a steroid hormone precursor. Your liver and kidneys convert it to calcitriol, which then binds to vitamin D receptors distributed throughout your body, including in the cells that produce testosterone. The VDR (vitamin D receptor) is present in Leydig cells. Deficiency affects the entire steroidogenic pathway, not just one downstream marker.
Sam’s D came back at 18 ng/mL – below the generally accepted deficiency threshold of 20 and well below the 50 ng/mL I consider functionally optimal. Andre Whitlock, a 47-year-old professor I worked with, came in at 14 ng/mL despite being an intellectually meticulous guy who thought he was paying attention to his health. The deficiency is far more common than most people realize, especially in northern latitudes and in any man who spends most of the day indoors.
What I see consistently: when D is low and gets corrected, the bloodwork response is often fast – within 8-12 weeks – and sometimes dramatic. I’ve watched T climb 80-100 points in clients whose primary intervention was D3 correction, with no other protocol changes. The range of response is wide. Some men don’t respond as strongly, and I’m honest about that. But deficiency correction is non-negotiable before evaluating anything else.
Protocol: 5,000 IU D3 (cholecalciferol) daily with food that contains fat. Always paired with K2 MK-7 at 100-200 mcg – K2 directs calcium where it belongs (bones, not arteries) and works synergistically with D3 for hormonal function. One thing that often gets missed: magnesium is required for D3 conversion at multiple enzymatic steps. If your magnesium is low, your D3 supplementation underperforms. This is one of the reasons I run all three foundations together rather than in isolation.
Magnesium glycinate: the one that surprises people
Most men have inadequate magnesium intake. Not technically deficient on standard serum testing – serum magnesium is a terrible indicator because the body strips it from bone and muscle to keep serum levels stable – but functionally low in the tissues that need it. The reasons are predictable: depleted soil, processed food diets, high sweat output in active men, chronic stress driving higher turnover.
Magnesium has direct effects on testosterone through multiple pathways. It modulates SHBG (sex hormone binding globulin, the protein that binds testosterone and makes it unavailable for use) – higher magnesium status tends to correlate with lower SHBG and higher free testosterone. It’s required for D3 activation, as I mentioned. It supports sleep architecture, particularly slow-wave sleep where the majority of testosterone production occurs. And it directly counteracts the cortisol response – which is often chronically elevated in the men who most need T optimization.
Aaron Pell was 31, financial planner out of Denver. Total testosterone at 720 – looked excellent on paper. Free testosterone at 8.4 pg/mL – low end. SHBG at 78 nmol/L. He’d come to me because he “felt off” despite bloodwork his GP had told him looked fine. He was right to push – total T was masking the actual picture.
We ran a fuller panel. Thyroid was mildly suppressed. Magnesium intake was effectively zero from his diet. I added magnesium glycinate at 400mg before bed, boron at 9mg, and addressed the thyroid nutrients. By month four, SHBG had dropped to 48. Free T climbed to 21.2 pg/mL. Aaron described the subjective change as going from a car that reads fine on the dashboard but has no power when you push the pedal, to a car that actually responds. His wife got pregnant at month eight. He tells that part of the story with some pride.
For the full picture on boron – the fourth supplement that often gets added after this foundation stack is running – see the boron and free testosterone article. Aaron’s case is the flagship there too.
The form choice with magnesium matters significantly. Oxide – the cheapest, most common form in grocery store supplements – has about 4% bioavailability and reliably causes GI distress at any meaningful dose. Glycinate (magnesium chelated with the amino acid glycine) absorbs well, doesn’t cause laxative effects, and the glycine itself supports sleep quality. Citrate is also well absorbed and slightly cheaper than glycinate. Threonate crosses the blood-brain barrier at higher rates and is the cognitive choice, but it’s expensive for the amount of elemental magnesium you get. I’ll go deeper on all the form comparisons in the magnesium glycinate vs. oxide article.
For most clients starting out: magnesium glycinate at 300-400mg elemental magnesium, taken 30-60 minutes before bed. Elemental magnesium is what matters – not the total weight of the supplement capsule. If a product says “400mg magnesium glycinate” that’s the total compound weight, not the elemental magnesium. The actual elemental content is typically 50-70mg per 400mg of glycinate compound. Read the label carefully and target 300-400mg of elemental magnesium per day.
Why the supplement industry hates this advice
This is not complicated, so I’ll be direct. Zinc picolinate, vitamin D3, and magnesium glycinate are inexpensive commodities. A 90-day supply of quality formulations for all three will run you $35-50. There is essentially no margin in selling them. Supplement companies make their money on branded herbal extracts, proprietary blends, and ingredients where they can charge $60 a bottle for something that costs $4 to produce.
The “foundation stack” messaging doesn’t sell supplements – it tells people to spend less. The industry’s financial incentives run directly counter to leading with this advice. I understand that. I’m telling you anyway because my clients’ bloodwork matters more to me than supplement affiliate margins.
I laid out the full supplement tier framework in the supplement tier list article – which covers S-tier through D-tier across the full landscape. Zinc, D3, and magnesium sit at S-tier specifically because of how reliably they move bloodwork when deficiency is present. Nothing else on the list performs as consistently as fixing a deficiency.
The problem with going straight for the B and C tier options – tongkat ali, shilajit, fadogia, the LH-stimulant category – is that they’re trying to push production higher through a system that may not be able to respond, because the foundational nutrients required for testosterone synthesis aren’t there. It’s like trying to optimize your engine’s performance when you’re running on cheap oil and low coolant. Fix the basics first.
The sequencing I use with new clients
The order is non-negotiable for me. Before anything exotic gets added, I want to see a 60-90 day run of the foundation stack with bloodwork before and after. Here’s the protocol I give most clients starting out:
- Zinc picolinate or bisglycinate: 25-30mg with food (not on empty stomach – can cause nausea)
- Vitamin D3 + K2 MK-7: 5,000 IU D3 with 100-200mcg K2, taken with a meal containing fat
- Magnesium glycinate: 300-400mg elemental, 30-60 minutes before bed
- Run for 90 days minimum before re-testing
- Re-test: total T, free T, SHBG, vitamin D 25-OH, zinc (RBC zinc if possible, more accurate than serum)
If everything is in optimal range after 90 days and the bloodwork response was strong, I’m often done with the foundation and ready to add the first tier of adaptogens – typically ashwagandha KSM-66 if cortisol or stress is in the picture. If the D3 response was slow or incomplete, we look at whether magnesium was limiting the conversion.
Some clients hit this protocol and their T climbs 80-150 ng/dL in 90 days from deficiency correction alone. Sam did. Jake did, to be fair, though his lifestyle changes were running in parallel. Some clients have better starting status and see modest improvement. But I’ve never had a client who was deficient in all three, corrected all three, and had no bloodwork response. That’s never happened.
The case for going farther – tongkat ali, boron for SHBG reduction, or any of the LH-stimulant options – only makes sense after this baseline is established. If you’re building a supplement stack on a deficiency-suppressed system, you’re optimizing the wrong variable. Fix the floor before you try to raise the ceiling.
What the foundation stack doesn’t do
I want to be clear about the limits here because overclaiming in this space is the norm and I’d rather err the other way. This stack will not:
- Raise T above your genetic baseline – it removes suppression from deficiency, which is a different thing
- Replace TRT if your LH and FSH are elevated and your testes are genuinely not producing – that’s primary hypogonadism and it requires a different conversation
- Fix T that’s suppressed by severe obesity, untreated sleep apnea, or primary hypogonadism (high LH/FSH with low T)
- Work in 30 days – the studies on D3 repletion show meaningful changes at 8-12 weeks; zinc and magnesium turn over a bit faster but realistic assessment happens at the 90-day mark
The article on SHBG and free testosterone goes into what to do when total T looks fine but free T doesn’t – which is Aaron’s situation in a different form. That’s often where boron becomes the next add after this foundation.
If you’re reading this and you haven’t run bloodwork yet, that’s genuinely the first step. Not the supplement protocol. The bloodwork. You need to know whether you’re deficient and in what. The foundation stack is safe to run without testing if you prefer to skip that step – none of these three are dangerous at normal doses – but testing gives you feedback on whether it’s working and where the biggest gaps are. That feedback is worth having before you spend money on anything.
Practical Checklist — Foundation Stack Protocol
- Before starting: Order a panel including total T, free T, SHBG, vitamin D 25-OH, zinc (serum minimum, RBC zinc preferred), and ideally magnesium RBC (not serum)
- Zinc: 25-30mg zinc picolinate or bisglycinate daily with food. Not zinc oxide. Not zinc sulfate.
- D3: 5,000 IU vitamin D3 (cholecalciferol) with 100-200mcg K2 MK-7. Take with a fatty meal for absorption.
- Magnesium: 300-400mg elemental magnesium as glycinate. Before bed. Note that the elemental magnesium is a fraction of the compound weight listed on the label.
- Do not add anything else for 60-90 days. One variable at a time if you want interpretable data.
- At 90 days: Re-test. If all three markers are in the optimal range (D at 50+ ng/mL, zinc in the upper third of range, T visibly improved), evaluate whether anything further is needed.
- If adding boron: 9mg daily in citrate or glycinate form is typically next for SHBG reduction. Do not start boron until D3 and magnesium have been running for at least 4-6 weeks.
- Copper watch: If you’re running zinc at the higher end (40mg) long-term, add a copper check. Zinc and copper compete for absorption; extended high-dose zinc can drive copper low.
That’s the stack. Three supplements, 90 days, bloodwork before and after. If you want the full context on what exotic supplements are worth adding after this foundation is set, the tier list covers the full landscape. But most men who run this protocol properly and address the lifestyle factors in parallel – training, sleep, diet quality – find they don’t need much beyond it.
Ron Males is an ISSA Certified Nutrition Coach, strength coach, and longtime member of the original PowerandBulk legacy forum. Coaching clients since 2015, Ron specializes in grip strength training and the StrongFirst/strength-first philosophy - making proven powerlifting principles accessible to regular people. His foundation runs deep: personal training experience, comprehensive research into performance enhancement, testosterone optimization, and muscle building - combined with a working knowledge of biohacking and evidence-based supplementation. Ron is dedicated to cutting through misinformation and giving people straight, reliable information they can actually act on. His interests span herbs, adaptogens, and performance-enhancing compounds - not just for the gym, but for optimizing energy, focus, and output across all areas of life. As an occasional supplement reviewer at PowerandBulk.com, he brings the same no-BS standard to the bottle as he applies to the barbell — drawing on first-hand experience with bodybuilding supplements and a nutrition coaching background to deliver reviews readers can trust. A founding voice on the old forum, Ron continues to shape the training and supplement content that makes PowerandBulk.com what it is today. Read more about him.

