Vitamin C (ascorbic acid) is essential for collagen synthesis, neurotransmitter formation, and antioxidant defense. The well-evidenced uses are around cold duration and exercise stress.
Regular vitamin C didn't reduce cold incidence in the general population, but reduced cold duration by 8% in adults and 14% in children. Larger benefit in athletes (52% reduction in incidence).
Moderate vitamin C (200-500 mg) supports recovery in athletes. Mega-doses (>1 g) may blunt training adaptations, moderation matters.
Vitamin C taken with iron-rich meals dramatically enhances non-heme iron absorption, clinically meaningful for vegetarians and women with low ferritin.
We prioritize randomised controlled trials and meta-analyses over single observational studies. Animal and in-vitro data are listed as "mechanistic", they suggest direction, not human effect size.
We don't cherry-pick favourable studies, omit conflicting evidence, or cite industry-funded trials without flagging the conflict of interest where known.
The research is one thing, what to take, at what dose, paired with what, is another. We compose stacks that turn the evidence into a daily routine.
Studies referenced are real published research. Summaries are paraphrased for accessibility, for exact methods and full text, click through to PubMed. Educational use only, not medical advice. Consult a qualified clinician before starting any new supplement.