Natural Vitamin D 5000IU (100% Shiitake)
with subscription
60 capsules — 60-day supply · 5000 IU · $0.99/day
- 100% whole-fruiting body Shiitake — no mycelium, no grain filler
- UV-activated vitamin D2 — the same way your skin produces it in sunlight
- 100% vegan — no lanolin, no animal products of any kind
- Southern Cross Organic Certified · CSIRO partnership
D2 vs D3 — does the source actually matter?
- UV-activated Shiitake mushrooms
- 100% vegan — no animal products
- Same process as sunlight on skin
- CSIRO-backed UV-activation science
- Organic certified, zero fillers
- Derived from lanolin (sheep’s wool)
- Not suitable for vegans
- Often mixed with fillers & binders
- Synthetic extraction process
- No organic certification
Choose how you receive it
Whole-Food Source
Vitamin D from UV-activated Shiitake — not synthetic lanolin
Zero Fillers
Just Shiitake powder and a vegan capsule. Nothing else.
CSIRO Backed
Developed with Australia's national science agency
Independently Tested
Every batch lab-verified. Results published publicly.
The cleanest vitamin D supplement available.
Hi-D Natural Vitamin D 5000 IU - 60 Capsules is a whole food, plant based Mushroom Vitamin D made from Organic Shiitake Mushrooms
100% Certified Organic Shiitake Mushrooms (Fruiting body)
Hi-D Natural Vitamin D supports with:
- Bone and muscular health
- Immunity
- Gut health
- Mood
- Hair, skin & nails
- Energy
- Metabolism
Hi-D is free from gluten, dairy, soy, fish, sugar, chemical extracts, fillers or mycelium
We use premium organic shiitake mushrooms
5000 IU
125mcg Vitamin D2 (ergocalciferol from Shiitake)
60 Veg Capsules
IU = International Units of Vitamin D
For clinically diagnosed deficiency. Use with guidance from your doctor.
What's inside — and what isn't.
| Ingredient | Per Capsule |
|---|---|
| Shiitake Mushroom Powder (whole-fruiting body, UV-activated) | 2500mg |
| Vitamin D2 (ergocalciferol, naturally occurring) | 125mcg (5000 IU) |
| Capsule shell (hypromellose, vegan) | — |
That is the complete ingredient list. Nothing hidden.
How to take Hi-D
Simple daily routine — no complicated protocol required.
Take 1 capsule daily
One capsule per day is all you need. Take with or without food — there are no absorption issues either way.
Take it in the morning
Most customers take it with breakfast. Consistent timing helps build the habit and maximises compliance.
Test at 3 months
Ask your doctor for a serum 25(OH)D blood test at 3 months. Most customers see measurable improvement.
Quality you can see. Science you can trust.
Every claim independently verified. Every batch publicly tested.
Organic Certified
Southern Cross Organic Certified — independently audited on every batch.
GMP Certified Facility
Good Manufacturing Practice — professional, controlled production.
HACCP Certified
The gold standard in food safety management systems.
3rd Party Tested
Every product independently lab tested. Results published — no exceptions.
Developed with Australia's national science agency.
Hi-D was developed alongside CSIRO — the Commonwealth Scientific and Industrial Research Organisation. Our UV-activation process is grounded in peer-reviewed science, not marketing claims. Independent third-party testing is published for every product.
Read Our ProcessCSIRO
Commonwealth Scientific and Industrial Research Organisation
"Finally a vitamin D supplement I feel good about taking. No fillers, no synthetic ingredients. My GP commented on my improved blood results after three months."
"I've tried every vitamin D supplement on the market. This is the only one that doesn't cause digestive issues. I notice the difference in my energy within weeks."
"As a vegan I had almost given up finding a clean vitamin D. Hi-D is 100% plant-based, certified organic, and actually backed by science. Order the 3-pack."
Everything you want to know
What is the difference between vitamin D2 and D3?
Hi-D contains vitamin D2 (ergocalciferol) naturally produced via UV-activated Shiitake. Research shows whole-food D2 from mushrooms is highly bioavailable and effective at raising serum vitamin D levels.
Is Hi-D suitable for vegans?
Yes — 100% plant-based. Most vitamin D3 supplements are derived from lanolin (sheep's wool). Every Hi-D product comes entirely from organic Shiitake mushrooms. No animal products at any stage.
What does "whole-fruiting body" mean?
We use the mushroom cap and stem — the actual fruiting body — not mycelium. Many competitors grow mycelium on grain, resulting in a product that is largely starch with minimal mushroom content.
How long until I notice a difference?
Most customers notice improvements in energy and mood within 3–6 weeks of consistent daily use. Blood level improvements typically show in a standard 3-month blood test with your doctor.
Can I take this with other supplements?
Hi-D pairs well with magnesium and vitamin K2, which support vitamin D absorption and utilisation. As with any supplement, consult your doctor if you take prescription medications.
What is your satisfaction guarantee?
Full refund. No questions. Keep the bottle. If you're not satisfied within 30 days of purchase, email us and we'll refund you in full — you don't even need to return the product.
Other Hi-D products
Natural Vitamin D 1000IU (100% Shiitake)
Hi-D Natural Vitamin D 1000 IU - 60 Capsules is a whole food, plant based Vi...
Natural Vitamin D 1000IU + Beta-Glucan (100% Shiitake)
Hi-D Natural Vitamin D Beta Glucan 1000 IU - 60 Capsules is a whole food, pla...
Natural Vitamin D 3000IU (100% Shiitake)
Hi-D Natural Vitamin D 3000 IU - 60 Capsules is a whole food, plant based Vi...