Vitamin C for Histamine Balance
Vitamin C enhances histamine degradation and modestly reduces histamine levels; a reasonable low-cost adjunct, not a standalone antihistamine.
Overview
Verdict
How It Works
Dosing & Protocol
Typical dose
- Recommended dose
- 500–1,000 mg/day in divided doses.
- Expected timeframe
- 4-8 weeks
Protocol
- form
- Ascorbic acid, or buffered sodium/calcium ascorbate if plain ascorbic acid causes stomach upset
- duration
- 4-8 weeks
- co factor
- Take with food in divided doses, since absorption saturates above roughly 200 mg per dose. Evidence is mixed and thin. Vitamin C appears to reduce histamine release from mast cells and to accelerate histamine degradation, and several older studies reported falls in blood histamine with supplementation - Johnston and colleagues found plasma histamine fell after 2 g/day. A German observational study of 7.5 g intravenous vitamin C reported reduced allergy symptoms, but was uncontrolled. No adequately powered randomised trial has measured histamine-related clinical outcomes, and blood histamine itself is a poor and rarely useful measure.
- titration
- Up to 2,000 mg/day in divided doses, which is also the tolerable upper intake level
- starting dose
- 500 mg twice daily with food
Evidence
What the studies say
No studies are yet linked to both Vitamin C and Histamine Balance.
Safety
Caveats
High doses cause GI looseness; reduces with divided dosing. Kidney-stone history: moderate intake.
Less likely to help if
Medical Disclaimer
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Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.