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HealthNationWeekly insights

Free tool

Build a small, honest supplement stack.

Pick your goals. We'll surface five supplements with real evidence behind them — graded A through D — with dose, who-should-skip, and the catch. We'll also tell you what to leave on the shelf.

What are you actually trying to move?

Pick up to three. We'll rank what's evidence-backed for those goals.

Your suggested stack

  • Magnesium (glycinate or threonate)

    For: Better sleep

    B — solid evidence

    Modest evidence for sleep onset and quality; supports muscle recovery; many adults intake below RDA from food.

    Dose
    200–400 mg elemental magnesium, 30–60 min before bed.
    Skip if
    Severe kidney disease.

    Note: Glycinate is better tolerated GI-wise than oxide or citrate.

  • L-theanine

    For: Energy / focus · Better sleep

    C — emerging

    Amino acid from tea leaves; small clinical evidence for relaxation without sedation and for blunting caffeine jitters.

    Dose
    100–200 mg as needed.
    Skip if
    No major contraindications; talk to your doctor if on sedatives.

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This is informational, not medical advice. Talk to your clinician before adding supplements, especially if you take prescription medications. We list a small honest set; not having a supplement on this page is intentional, not an oversight — most of the bestsellers on Amazon don't have a strong enough evidence base to recommend.

How we grade evidence

A — strong evidence: multiple randomized controlled trials with consistent effect sizes; FDA-approved for at least one indication, or a meta-analysis supporting effect.

B — solid evidence: several RCTs with directional evidence, but heterogeneity or limited dose-response data.

C — emerging: mostly mechanistic data plus a few small trials. Reasonable to try, low downside, but not a slam dunk.

D — weak / mixed:popular but the trial evidence is thin or contradicts the marketing. Generally we don't list these.

What we explicitly leave off

Most of the supplement-aisle bestsellers fall here. Apple cider vinegar gummies, cinnamon for blood sugar, biotin for hair growth in non-deficient adults, “detox” blends, generic “greens” powders, most testosterone boosters, most nootropic stacks, raspberry ketones, garcinia. Either the evidence is weak or the dose in the supplement is well below what the trial used.

When you should actually skip a supplement

Whenever the food version is realistic. Fiber from oats and beans is cheaper and better than a fiber gummy. Omega-3 from two servings of fatty fish per week beats most fish-oil capsules. Magnesium from leafy greens, nuts, and seeds beats most magnesium supplements. The stack is for genuine gaps, not as a substitute for boring basics.