Apr 11, 2025: We're back with the new bottles! Note that the new bottles are slightly bigger, but we kept the number of drops, IU's per drop, and the total amount of D3 total the same. Sorry for the delay!
Apr 9, 2025: We will be out of stock for a couple of days as we are testing out new bottles. Sadly, the USA-made bottles are out of stock with no ETA. Sorry!
Feb 17, 2025: It's best practice to shake the bottle before dispensing drops to ensure an even distribution of vitamin content with each drop. Remember to squeeze the dropper bulb while shaking.
We are currently shipping 1,000 IU/drop bottles with the following info (updated Apr 16, 2025):
(see 10,000 IU/drop after):
Serial Number (s/n) | Date Range Sold | Lab Results & Info |
---|---|---|
D0140 - D0176 |
April 11, 2025 - onward | Vitamin D3 Powder:
|
See all COAs. |
We are shipping 10,000 IU/drop Vitamin D3 in EVOOO with the following COA (see 1,000 IU/drop above):
Serial Number (s/n) | Date Range Sold | Lab Results & Info |
---|---|---|
E0000 - E0012 |
Jan 30, 2025 - onward | Vitamin D3 Powder:
|
See all COAs. |
Cost per 1,000 IU of VD3:
- ~1,000 IU/drop, 860 drops
- with 2.3% buffer = 880,000 IU
- $0.0216 / 1,000 IU
- ~10,000 IU/drop, 860 drops
- with 1.5% buffer = 8,720,000 IU
- $0.0183 / 1,000 IU
Note: Please keep bottle in a dark & cool place and keep the lid tighly closed (don't over-hulk it though).
Specifications (updated Apr 16, 2025, changes underlined):
- Ingredients: Organic Extra Virgin Olive Oil (EVOOO), Vitamin D3 powder
- you may see small particles of olives in solution, this is considered normal as part of the unfiltered milling process.
- Excipients: none
- Vitamin D3 Source Material: Lanolin
- County of Origin:
- Vitamin D3: See table above.
- EVOOO: See table above.
- Certificate of Analysis (COA) available online with every order (why the COA? | view COAs)
- Bottled in an amber glass jar for protection from UV light (why amber?)
All bottle components are made in the USASee tables above for bottle components' country of origin.- Bottle dimensions w/ dropper: 1.25 x 4 in (32 x 102 mm) (diameter x height)
- Dropper lid & bulb materials: plastic,
monprenerubber and glass - Total weight: 1,000 IU/drop: ~2.54 oz (72 g) 1,000. 10,000 IU/drop: ~2.46 oz (69.74 g)
- Notes on contents per bottle:
- each VD3 1,000 IU/drop bottle contains:
- 880,000 IU of Vitamin D3
24.75523.198 g of EVOOO
- each VD3 10,000 IU/drop bottle contains:
- 8,720,000 IU of Vitamin D3
- 25.215 g of EVOOO
- How did you come up with these ratios?
- There's an extra "buffer" in each bottle to make sure we aren't short changing you:
- 2.3% buffer in the ~1,000 IU/drop bottle
- 1.5% buffer in the ~10,000 IU/drop bottle
- Why 2.3% in the ~1,000 IU/drop bottle? Our scale's resolution is in milligrams, and it's quite difficult to weigh anything under 1 mg.
- There's an extra "buffer" in each bottle to make sure we aren't short changing you:
- By our drop calculations, there are ~860 drops of solution in each bottle. (please disregard the "660 drops" shown in the photos).
- However, drop weights and drop counts varies depending on several factors. Please see the section in our FAQ regarding average drop weights that we currently use. Please also see our post regarding drop counts (for VK2 MK-4) for more details.
- You may only be able to dispense ~850 drops using the dropper, with the remaining left as a film on the glass bottle and dropper (~10 drops). Use a mini scoop to scrape out the rest, or add a bit more EVOO and shake.
- each VD3 1,000 IU/drop bottle contains:
Disclosures (updated Dec 20, 2024, updates underlined):
- We use glass containers for storage and packaging, although caps and seals are usually made from silicone, plastic, rubber, or LDPE.
- We use amber colored glass or wrap clear glass to block UV rays from reaching contents.
- We store bulk powder sealed in the freezer.
- We store EVOO at room temperature (74 - 78°F or 23.3 - 25.6°C) away from sunlight.
- We steam sterilize all glass bottles, containers, caps, liners, and utensils before using them for storage or bottling using distilled water.
- We prioritize the material of
packing utensilsall containers and utensils that come into contact with product in this order: glass, ceramic, stainless steel, plastic, aluminum. - Bulk powder we receive is usually stored in an aluminum or plastic container. We immediately weigh and move it to a glass container.
- More information about our process here.
- Please also review our Terms and Conditions before placing an order.
Are we missing something that you'd like to see? Let us know!
8 Reviews Hide Reviews Show Reviews
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High quality, trustable company
Lark Supply is the standard for good quality products for me now. The vast amount of information Richard provides makes me want to buy from his company for any supplement they release now and future.
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Best Vit D supplement money can buy
Seed oil-free and lanolin-derived?? Sign me UP!! Fantastic value, too! I recommend this to all of my clients (who need it… which is most of them).
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Vitamin D3
I had a favorite product before trying this but this is an even greater value and a top quality product. I'll be switching to Lark Supply now.
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Strengthening teeth!
This D3, in combination with the K2 from Lark, did wonders for my teeth sensitivity!
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D3 EVO
Best D3 supp I’ve used. Gentle rise in energy/clarity. Both my father and I agree it’s the best D3 we’ve used. No bad after taste. 5 drops a day as a supplemental dose. Excited to reorder after summer to supplement winter. Clear and transparent testing and processes. Will be ordering other products from Richard
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Vitamin D3
Great communication and fast delivery to the UK. Well packaged. Will be ordering more in the future. Appreciate the openness to talk about the product and how it's brought together. Thank you!
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D3
I need to buy 10 more…
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Fantastic
I'm really impressed with everything that has gone into this product. The testing, transparency, packaging and customer service are top notch! Having used both this product and the Vitamin K2 Mk-4 Powder, the quality and consistency across products is wonderful to see. Richard truly cares about the products he sells and it shows!