Vitamin D for Oxytocin Enhancement
Vitamin D adequacy supports oxytocin-related signalling in animal models, but no human trial shows it changes bonding or social behaviour.
Overview
Verdict
How It Works
Dosing & Protocol
Typical dose
- Recommended dose
- Maintain 25(OH)D at 30-50 ng/mL; typically 1000-2000 IU/day
- Expected timeframe
- 8-12 weeks to normalise status
Protocol
- form
- Vitamin D3 (cholecalciferol) with a fat-containing meal, if taken for general adequacy
- duration
- Not applicable
- co factor
- Evidence is insufficient. The hypothesis comes from Patrick and Ames, who identified a vitamin D response element in the oxytocin gene promoter and proposed that calcitriol could regulate oxytocin transcription, with relevance suggested for autism and social behaviour. This is a molecular biology observation supported by cell work and some animal data. No human trial has measured plasma or central oxytocin after vitamin D supplementation, and peripheral blood oxytocin is in any case a poor and disputed proxy for brain oxytocin activity, since the peptide crosses the blood-brain barrier poorly in either direction.
- titration
- Not applicable for this outcome; 4,000 IU/day is the tolerable upper intake level
- starting dose
- Not established. No human trial has measured oxytocin after vitamin D supplementation
Evidence
What the studies say
Vitamin D status and oxytocin: mechanistic and clinical evidence review
Patrick RP, Ames BN
Vitamin D response elements were identified in the oxytocin gene promoter
Safety
Caveats
Correct deficiency for its established benefits, not for oxytocin. Do not exceed 4000 IU/day without monitoring.
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.