Supplement Dosage Guide

Supplement dosing lives between two failures: decorative under-dosing and reckless megadosing — with the evidence-anchored middle requiring minor homework.

The dose-literacy chapter.

Finding Evidence-Anchored Doses

The homework protocol: research-dose lookup for single ingredients (NIH's ODS fact sheets and NCCIH herb pages publishing the studied ranges — the label chapter's comparison numbers), RDA-vs-trial distinction (adequacy targets versus intervention doses — vitamin C's 90mg adequacy versus 200mg-1g trial range illustrating), and the blend-arithmetic reality that proprietary totals often cannot match single-herb trial doses — framing expectations accordingly.

The More-Is-Better Fallacy

The curve literacy: nutrients run U-shaped (deficiency harms, adequacy serves, excess harms again — the antioxidant chapter's trial graveyard), upper limits exist for reasons (vitamin A-D-iron-zinc-selenium all carrying documented ceilings; the fat-soluble accumulators especially), and absorption efficiency FALLS with dose for many nutrients (vitamin C's transporter saturation making megadoses expensive urine). The honest frame: doses are targets, not scores.

Timing-and-Food Factors

The kinetics craft: FAT-soluble company (vitamins A-D-E-K and carotenoid-class ingredients absorbing with meals containing fat), mineral TRAFFIC rules (calcium-iron-zinc competing at high doses — separation beating stacking), stimulant-adjacent timing (the caffeine-curfew logic for anything alerting), consistency-over-clock for most daily nutrients (the habit chapters' anchor logic), and label-instruction respect as the default.

Personal Titration

The individual layer: start-low-assess protocols for new additions (the two-week scored trial this blog standardises), body-size-and-context adjustments belonging to professionals (medication interactions, conditions, pregnancy — the pharmacist-and-clinician lane), symptom-and-lab feedback where relevant (vitamin D's testing loop), and the deprescribing audit — supplements earning annual re-justification rather than drawer tenure.

Dose verdict: anchor to evidence, respect the ceilings, time by kinetics — and let professionals handle the personal maths.