Meta-analysis on this page of all forms of Vitamin D did not find any benefit to ICU patients. ICU patients often have poor digestive systems, and so respond best to gut-friendly Vitamin D.
I have highlighted those gut-friendly RCTs using Vitamin D
Gut-friendly forms include:
- Injection
- IV
- Topical
- Emulsions
- Mucous membranes in the mouth
- Vaginal
Overview Gut and vitamin D contains gut-friendly information
Getting Vitamin D into your body has the following chart
Getting Vitamin D into your body also has the following
If poorly functioning gut
Bio-D-Mulsion Forte – especially made for those with poorly functioning guts, or perhaps lacking gallbladder
Sublingual – goes directly into the bloodstream
Fat-soluble Vitamins go thru the slow lymph system
you can make your own sublingual by dissolving Vitamin D in water or use nano form
Oil: 1 drop typically contains 400 IU, 1,000 IU, or 4,000 IU, typically not taste good
Topical – goes directly into the bloodstream. Put oil on your skin, Use Aloe vera cream with Vitamin D, or make your own
Vaginal – goes directly into the bloodstream. Prescription-only?
Bio-Tech might be useful – it is also water-soluble
Vitamin D sprayed inside cheeks (buccal spray) - several studies
and, those people with malabsorption problems had a larger response to spray
Inject Vitamin D quarterly into muscle, into vein, or perhaps into body cavity if quickly needed
Nanoparticles could be used to increase vitamin D getting to the gut – Oct 2015
Poor guts need different forms of vitamin D has the following
Guesses of Vitamin D response if poor gut
| Bio | Form | Speed | Duration |
| 10 | Injection ($$$) or Calcidiol or Calcitriol | D - Slow C -Fast | Long |
| 10 | Sun/UVB | Slow | Long |
| 10 | Topical (skin patch/cream, vagina) | Slow Fast nano | Normal |
| 9 | Nanoemulsion -mucosal perhaps activates VDR | Fast | Normal |
| 9? | Inhaled (future) | Fast | Normal |
| 8 | Bio-D-Mulsion Forte | Normal | Normal |
| 6 | Water soluble (Bio-Tech) | Normal | Normal |
| 4 | Sublingual/spray (some goes into gut) | Fast | Normal |
| 3 | Coconut oil based | Slow | Normal |
| 2 | Food (salmon etc.) | Slow | Normal |
| 2 | Olive oil based (majority) | Slow | Normal |
10= best bioavailable, 0 = worst, guesses have a range of +-2
Speed: Fast ~2-6 hours, Slow ~10-30 hours
Duration: Long ~3-6 months, Normal = ~2 months
Vitamin D supplementation and the outcomes of critically ill adult patients: a systematic review and meta-analysis of randomized controlled trials – Oct 2020
SCIENTIFIC REPORTS natureresearch
Shao-Huan Lan，7, Chih-Cheng Lai,7, Shen-Peng Chang, Li-Chin Lu, Shun-Hsing Hung* & Wei-Ting Lin*
Download the PDF from VitaminDWiki