My Stack

Vitamin C

A water-soluble vitamin naturally found in fruits and vegetables, especially citrus fruits and berries

Often taken withZinc, Collagen Peptides, Iron
Vitamin C

Evidence-backed benefits

How Vitamin C can help, goal by goal, with the studies behind each score.

Immune Resilience

15XP

Does not prevent colds for most people, but may shorten them slightly.

Studies1

How to read XP

Each score is for this supplement and that specific goal, not a general rating.

XP combines how reliable the research is with how much difference it usually makes. Higher means stronger evidence for that supplement and that goal.

Limited<15 XPModest15–27 XPModerate28–44 XPReliable45–69 XPHigh70+ XP

Dosage

What studies commonly use for Vitamin C, and how it is usually taken.

Usual dose

200–500 mg per day

How to take it
  • Split into several doses
See study range

200–1,000 mg/day (tolerable upper intake level is 2,000 mg/day)

Your journey

Blood Pressure & Circulation comes first (week 2 → week 8); Immune Resilience takes longest (week 2 → week 9). An estimate from the studies' timelines, not a promise: everyone responds differently.

Blood Pressure & Circulation
Week 2 → Week 8
Immune Resilience
Week 2 → Week 9

From the first noticeable effect to roughly full strength. Colour follows the XP tier of each benefit.

Make it a habit

These gains come from steady use, not a single dose. Keep Vitamin C in your routine for about week 9 before you judge it.

Safety

What to know before you take Vitamin C.

Safety rating

Well tolerated

Mild effects, if any.

  • Kidney stonesHigher risk at 1 g a day or more.

Check with a doctor first if you have hemochromatosis (iron overload) or a history of kidney stones.

General information, not medical advice. If you are pregnant, take medication or have a health condition, check with a doctor or pharmacist first.

Common pairings

Supplements and habits often combined with Vitamin C.

Zinc

Commonly combined for immune support

Iron

Vitamin C improves how much iron your body absorbs from a supplement.

Where to buy

Brands we looked at for Vitamin C, with our quality score for each.

Authority

Public figures who take or recommend Vitamin C. Portraits are AI-generated, not real photos, and this is not an endorsement.

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