BONE + IMMUNE SUPPORT
Vitamin D3 + K2
Vitamin D3 with K2 for bones and immune function, from October to April when the sun does not cover it. Plant-based, so it suits vegans too.*
- 180 softgels
- 1 a day
- 180-day supply
- Bones and immunity in one softgel: 10,000 IU D3 with 500 mcg K2.*
- D3 from lichen, not sheep's wool. The rare vegan D3.
- Buy once in autumn, forget about it until spring.
Supplement Facts
1 vegan softgel · 180 servings · 180 softgels
| Vitamin D3 (cholecalciferol, from lichen), 1,250% DV | 10,000 IU (250mcg) |
| Vitamin K2 (MK-7) | 500mcg |
| Omega-3 fatty acids (DHA + EPA) | 100mg |
| Astaxanthin | 1mg |
| Magnesium (glycinate) | 25mg |
| Black Seed Oil | 50mg |
| Black Pepper Extract | 5mg |
| Organic Coconut Oil | 50mg |
Other ingredients: vegan softgel (tapioca starch, glycerin, purified water). Made in an allergen-free facility.
WHAT IT DOES
Three jobs, one softgel
Sunlight makes vitamin D in the skin. Above the 37th parallel, half the year does not have enough of it.
Bones and immunityD3 helps the body absorb calcium and supports normal immune function. K2 as MK-7 helps that calcium go to bones.*
Winter-proofOne softgel with breakfast from the first cold morning to the first warm one, and you do not think about vitamin D again.
Absorbed with fatD3 and K2 are fat-soluble, so the softgel carries them in coconut oil and omega-3 rather than a dry tablet.
WHAT'S INSIDE
Every ingredient. Why it's there.
Tap any ingredient to see why it is in the formula and at what dose. Doses per 1 softgel, as printed on the label.
The sunshine vitamin, from lichen instead of sheep's wool. It helps you absorb calcium and supports immunity. High dose, see the FAQ.*
K2 sends calcium to your bones instead of leaving it elsewhere. Talk to your doctor if you take a blood thinner.*
Fish oil fats. D3 and K2 only absorb with fat, and omega-3 is a fat worth having anyway.*
A little magnesium, the mineral vitamin D needs to do its job.*
The red antioxidant from algae. It keeps the oils in the softgel fresh.*
Oil pressed from nigella seeds. Part of the fat base that carries the vitamins.*
The oil inside the softgel, and the reason this is a softgel rather than a dry tablet.
Black pepper extract. It helps your body absorb the other ingredients.*
BEFORE YOU BUY ANY VITAMIN D
Check the label first
| WHAT TO CHECK | PURETREX |
|---|---|
| D3 source | Lichen, plant-based |
| Vitamin D3 per softgel | 10,000 IU |
| K2 form | MK-7, 500 mcg |
| Softgel | Vegan, tapioca-based |
| Facility | Allergen-free |
| Proprietary blend | None |
LAB REPORT
Tested for heavy metals
A sample of this product was tested by an independent third-party laboratory. The report is dated September 24, 2025. Tap below to see the full results.
30-day money-back guarantee
Not for you? Email us within 30 days of delivery, opened or unopened, send it back and we refund you within 3–5 business days of receiving it. Return shipping is on you unless the item is faulty or incorrect.
DIRECTIONS
Simple enough to stick
-
1
1 softgel with a meal
The meal with the most fat, usually dinner.
-
2
Every day through winter
From the first cold morning to the first warm one. Sun does the job in summer.
-
3
Every other day for a lower dose
One softgel every second day halves the dose, and the pouch lasts a year.
SUITABILITY
Made for your routine
Great fit if you
- Have been told your vitamin D is low, or live somewhere with a real winter
- Are vegan or vegetarian and found that most D3 comes from sheep's wool
- Take a high-strength D3 on a doctor's advice and want K2 with it
Not for you if you
- Are pregnant, breastfeeding or buying for a child. This dose is not formulated for you.
- Take a blood thinner. Vitamin K interacts with warfarin and similar medicines, so talk to your doctor first.
- Already take another vitamin D product or a multivitamin with D. Add them up before you add this.
QUESTIONS
Before you order
Is 10,000 IU too much?
It is a high dose and a fair question. The National Institutes of Health sets a Tolerable Upper Intake Level of 4,000 IU a day for adults and notes that signs of toxicity are unlikely below 10,000 IU a day. Plenty of people take 10,000 IU on a doctor's advice after testing low; plenty do fine on less. The honest answer depends on your blood level, and a test is the only way to know. For a lower dose, take one softgel every other day.
Why is the D3 from lichen?
Almost all vitamin D3 is made from lanolin, which comes from sheep's wool. Lichen-derived D3 is what makes this suitable for vegans.
Can I take it with a multivitamin that has vitamin D?
Yes, but add the two up. Most multivitamins carry 400 to 1,000 IU. If in doubt, take this one every other day so the total stays where your doctor wants it.
Drops or softgels?
The drops are a different strength and format. The softgel is easier if you want one thing to swallow and forget.
PAIRS WELL WITH
Complete the routine
-
Magnesium Glycinate Complex $39.95 60-day supplyWhy add itMagnesium is involved in how the body uses vitamin D, and most people run short of it. Six forms, two capsules a day.*












