Supplements
Most men approach supplementation the way they approach a sale at a sporting goods store: they walk in, pick up whatever looks promising, throw eight bottles into the basket, take them all simultaneously, feel nothing different after two weeks, and quit the lot.
The problem is not that supplements do not work. It is that the order in which you add them, the time you give each one, and the way you sequence the tiers are the difference between a stack that actually moves measurable markers and a stack that just empties your wallet.
This article is the layering framework from Chapter 10 of The Testosterone Blueprint. Three tiers. A clear sequence. Time gates between each addition. And a stopping rule, because more supplements are not better — the right supplements at the right time are.
Three reasons.
First, you cannot tell what is working. If you start six supplements at once and feel better in week three, you have learned nothing useful about which one helped. You also cannot tell which one is hurting if something goes wrong. Layering — adding one new thing at a time, with a known gap in between — gives you actual data on what does and does not work for your body.
Second, supplements interact with each other and with your physiology in time-dependent ways. Zinc reduces copper absorption with long-term high doses. Vitamin D needs functional magnesium status to be properly activated. Iron supplementation in someone with normal ferritin can suppress testosterone. Some adaptogens (like ashwagandha) work best on a cycled schedule — three months on, two weeks off — and lose effectiveness if taken continuously.
Third, the foundation matters more than the toppings. Adding ashwagandha to a man whose vitamin D is at 35 nmol/L and whose magnesium intake is half the recommended baseline is like polishing a car with no oil in the engine. The foundation tier exists to correct deficiencies. Higher tiers only produce noticeable results once the foundation is in place.
This is the 5 supplements every man should start with. Vitamin D3 with K2, magnesium glycinate, zinc bisglycinate, omega-3 (EPA + DHA), and boron. All five address deficiencies that are statistically likely in any man living indoors in the developed world eating a typical diet.
The layering within the foundation itself:
Week 1: Vitamin D3 with K2 (2,000–5,000 IU with food, morning) + magnesium glycinate (300–400 mg elemental, 30–60 minutes before bed). These two together affect sleep first, which affects everything else.
Week 3: Add zinc bisglycinate (25 mg with dinner, away from coffee and dairy).
Week 5: Add omega-3 (1–3 g combined EPA + DHA with breakfast).
Week 7: Add boron (6–10 mg with food).
By week 8, you are on the full foundation stack. This is when you stop adding. Hold the stack for at least four more weeks before considering Tier 2. Do not skip this hold period — the foundation needs time to do its work, and the next tier only produces noticeable effects after foundations are addressed.
Cost: roughly £25–45 per month at decent quality. If you are using cheaper supplements and they are working, that is fine; the form (glycinate, citrate, etc.) matters more than the brand price.
Tier 2 is where you start considering supplements that act on the hormonal system more directly. Do not enter Tier 2 if Tier 1 has not been held for at least four weeks, and only enter it if specific issues remain that the foundation has not addressed.
Dose: 300–600 mg daily, taken with food. KSM-66 is the most studied form (root extract), Sensoril is a slightly different formulation (with leaf and root) that is sometimes more sedating.
What it does: Reduces cortisol modestly. Improves perceived stress and sleep quality. Has shown small but consistent increases in testosterone in stressed or sleep-deprived men. The effect is real but moderate; do not expect dramatic changes.
Best for: Men with persistent stress, fragmented sleep despite addressing sleep hygiene, or low morning testosterone that does not improve with the foundation stack.
Cycle: Three months on, two weeks off. Continuous use long-term tends to blunt the effect.
Caveats: Can cause vivid dreams or grogginess in some men. If it makes you feel worse, stop. It also interacts with thyroid medications — discuss with a doctor if you take any.
Dose: 200–400 mg of a standardised extract daily, in the morning with food.
What it does: Appears to support testosterone production, possibly through reducing SHBG and supporting Leydig cell function. The evidence is weaker than for ashwagandha but increasingly supported in well-conducted studies.
Best for: Men with normal-but-low testosterone or elevated SHBG that the foundation has not fully addressed.
Cycle: Most users do 12 weeks on, 4 weeks off, though continuous use has been studied without obvious problems.
Caveats: Can be stimulating; do not take in the evening. Watch out for products that are not standardised — the supplement market is full of "tongkat ali" capsules with no quantified active compound. Look for products that specify the eurycomanone content (typically 2% extracts are studied).
Dose: 500–600 mg of a standardised extract (e.g., Testofen at 600 mg) daily with food.
What it does: Some evidence of free testosterone support, more consistent evidence for libido improvement. The hormonal effect is mild; the libido and energy effects are sometimes more noticeable.
Best for: Men who have addressed the foundation, have reasonable testosterone, but report low libido as a primary complaint.
Caveats: Some men report a maple-syrup-like body odour at higher doses. Harmless but distinctive. Not for men with hypoglycaemia (it can lower blood sugar). Discuss with a doctor if you take diabetes medications.
Add one Tier 2 supplement at a time. Hold for at least 6 weeks before adding another. Do not stack all three Tier 2 supplements simultaneously — you will not know what is working and what is wasted money.
The typical sequence:
Week 13: Add ashwagandha (most evidence, broadest effect).
Week 19: If specific issues remain (low T or elevated SHBG), consider adding tongkat ali.
Week 25: If libido specifically is the residual complaint, consider adding fenugreek.
Most men will stop at Tier 2 with ashwagandha alone, or ashwagandha plus one of the others. The full three-supplement Tier 2 stack is uncommon and usually unnecessary.
Tier 3 is for men who have a specific goal that the foundation and Tier 2 have not addressed — usually performance-related (strength, recovery, body composition) rather than baseline health.
Creatine monohydrate (5 g daily, any time, with or without food). The most studied supplement on the market. Improves strength, lean mass, and recovery. Modest cognitive benefits in older men. No cycling required. The only meaningful caveat is that it draws water into muscle cells, which adds 1–2 kg of scale weight in the first week — that is intracellular water, not fat.
Beta-alanine (3–5 g daily, divided doses). Buffers muscle acidity during high-intensity work over 60–90 seconds. Improves performance in CrossFit-style training, interval work, and certain sports. Causes harmless tingling (paresthesia) at higher single doses.
Citrulline malate (6–8 g pre-workout). Nitric oxide precursor. Modest improvement in muscle endurance and reduced soreness. Useful for higher-rep work.
Caffeine (150–300 mg pre-workout). Performance enhancer for both strength and endurance. The most extensively studied legal ergogenic aid. Do not exceed 4–500 mg daily, and avoid within 8 hours of bedtime — caffeine has a long half-life and disrupts the very sleep that supports testosterone production.
The Tier 3 supplements are goal-dependent. They do not need to be layered like Tier 1 and 2 — you add them as needed for specific performance goals. Creatine is the one almost everyone benefits from; the others are situational.
A short list of supplements with poor evidence, problematic side effects, or both:
Tribulus terrestris. Heavily marketed, weakly supported. Human studies have failed to show meaningful testosterone effects at standard doses.
Generic "T-booster" proprietary blends. Low doses of many ingredients with weak evidence, padded out with cheap fillers. If a product does not disclose the specific dose of each ingredient, walk away.
DHEA (without supervision). Prohormone. Can raise testosterone temporarily but also raises oestradiol significantly and can suppress natural production. Not appropriate for self-supplementation in healthy men under 50.
ZMA (zinc + magnesium + B6). Not harmful, but the dose of magnesium is usually too low (typically 450 mg of magnesium oxide, which delivers about 50 mg of poorly absorbed elemental magnesium). You are better off with separate zinc bisglycinate and magnesium glycinate at proper doses.
See our companion piece on supplements wasting your money for the full breakdown.
This is the part most stack guides leave out. Adding more supplements is not better. Past a certain point, each additional capsule has diminishing returns, increasing interactions, and increasing cost.
A reasonable rule: if your most recent addition has not produced a measurable, sustained improvement after 8 weeks at a proper dose, drop it. Try a different intervention. Or hold what you have for longer.
The most common mistake is adding without subtracting. Men accumulate supplements like dust on a shelf. Within two years they are on twelve daily capsules, each one chosen for a reason they no longer remember, and they are still tired.
Review your stack every 3 months. For each supplement, ask: would I notice if I stopped this for 4 weeks? If the answer is "probably not," stop it. The ones that earn their place will be the ones that actually do something. The rest were marketing.
Bloodwork before and 12 weeks after major additions is the only way to know if anything is actually working. Total testosterone, free testosterone, SHBG, oestradiol, vitamin D, and ferritin are the minimum useful set. Medichecks or Everlywell for a comprehensive panel costs less than a month of half-priced supplements.
Subjective markers also matter: sleep quality, libido, morning erection frequency, gym performance, mood. Track them in a journal or notes app. If subjective markers improve while bloodwork is unchanged, the intervention still has value. If neither moves after 8 weeks, drop the supplement.
Weeks 1–8: Add Tier 1 (foundation) one supplement at a time.
Weeks 9–12: Hold Tier 1. Reassess symptoms and bloodwork.
Weeks 13–24: Add Tier 2 (hormonal support) one supplement at a time, 6 weeks apart.
Weeks 24+: Add Tier 3 (performance) as needed for specific goals.
Every 12 weeks: Bloodwork + subjective review. Drop what is not working. Cycle what needs cycling.
Most men hit their best version of a supplement protocol around month 6, not month 1. The work in months 1–3 is foundation; the work in months 4–6 is dialling in what matters for you specifically. Past month 6, the stack should stay relatively stable. If you are constantly changing it, you have not given anything enough time to work.
Chapter 10 of The Testosterone Blueprint covers all three tiers with detailed dosing, timing, and brand selection criteria — plus what to cycle, what to test, and what to drop. Card B2: the printable protocol you can keep on your kitchen counter.
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