Allergic reactions to Insect sting decreased by topical Vitamin D (frequent)

A friend got a reaction to a wasp sting which spread across her hand.
She applied vitamin D topically (10,000 IU) and the pain went way for about 4 hours
Comment by founder of VitaminDWiki
Topical Vitamin D lasts ~ 4 hours on the skin before it is carried away by the blood
Need to apply vitamin D frequently.
Just as a single aspirin does not last all day, a single topical Vitamin D dose does not help for a long time

Fewer allergic reactions if higher levels of vitamin D

source of 2018 chart

See also VitaminDWiki

• Topical Vitamin D

• Five times less mite allergy when vitamin D added in mid pregnancy and to infant – RCT April 2016

• Hay fever (allergic rhinitis) risk reduced 20 percent for each 100 IU of vitamin D during early pregnancy – Feb 2016

• Increase in vitamin D deficiency may partially explain increases in asthma and allergies – Jan 2015

• Less sun (less vitamin D) more anaphylaxis (severe allergic reaction) – June 2014

• Allergy - Overview - includes

  • Food Allergy 5X more likely if low vitamin D – Oct 2014

  • 10X more likely to have multiple food allergies if low vitamin D - Sept 2013

• Eczema (Atopic Dermatitis) treated by 1,600 IU Vitamin D (again) – Meta-analysis Aug 2019

  • Topical treatment would probably have been much faster

• Hay Fever treated by Vitamin D (50,000 IU weekly) – RCT July 2019

  • high concentration dosing often gets past any Vitamin D Receptor restriction