This isn't your everyday vitamin D supplement — it's a physician-supervised repletion dose. Each softgel delivers 50,000 IU of **Vitamin D3** taken once per week, averaging roughly 7,100 IU per day. That's above the standard 1,000–5,000 IU/day clinical range, but weekly high-dose protocols are a well-established medical approach for correcting severe deficiency quickly.
You're getting cholecalciferol from lanolin — the form your body uses most efficiently to raise blood levels — in a softgel with olive oil to help absorption. Once your levels are adequate, vitamin D supports bone density, immune function, mood regulation, and hormonal balance.
The non-negotiable here: do not take this without a healthcare provider monitoring your vitamin D and calcium blood levels. At 50,000 IU per softgel, a single dose is over 12x the tolerable upper daily intake. It's safe as a supervised weekly protocol, but taking it daily or without monitoring carries real risk of toxicity.
BioStacks
Other Ingredients (5)
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
Extra Virgin Olive OilCarrier
Cold-pressed olive oil used as a carrier and filler in softgel capsules for fat-soluble nutrients
GlycerinHumectant
Sweet-tasting liquid used in soft capsules and liquids
Safflower Seed OilCarrier
Light, neutral oil from safflower seeds used as a carrier in softgels for fat-soluble nutrients
Purified WaterSolvent
Water meeting USP specifications used as solvent/vehicle in gummies and liquids
How to Take It
Take it anytime
Fat-soluble — take with your largest fat-containing meal. Time of day doesn't matter.
With a meal containing fat
On the label
Suggested Usage: Take 1 softgel with a fat-containing meal once weekly, or as directed by your physician. This product is intended to be used under the supervision of a healthcare professional and not for daily use. Vitamin D and calcium levels should be monitored while taking this product.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$12.23
Cheaper than 72% of 552 vitamin D supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.