This delivers a clinically meaningful dose for bone, immune, and dental health. **Vitamin D3** at 5,000 IU (125mcg) as cholecalciferol is at the top of the studied range for maintaining healthy blood levels, and **Vitamin K2** at 100mcg as MK-7 ensures the calcium your D3 helps absorb gets directed to your bones and teeth rather than soft tissue.

The softgel contains organic virgin coconut oil and olive oil as carrier fats, which matters because both D3 and K2 are fat-soluble and absorb significantly better when taken with dietary fat. The 120-count bottle gives you a full four-month supply at one softgel per day.

One consideration: 5,000 IU of vitamin D daily is appropriate if you have documented deficiency or low sun exposure, but it sits at the upper end of the clinical range. If you're stacking this with a multivitamin or fortified foods that also contain vitamin D, it's worth periodically checking your 25(OH)D blood levels to make sure you stay in the optimal range.

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BioStacks

SR SportsResearch

D3 125 mcg + K2 100 mcg

Capsule · 120 servings · $0.37/serving

84 / 100Excellent

Score Breakdown

Formulation
96
Safety
85
Final score
84/100

Ingredients (2)

Vitamin D5000 IU

Exceeds UL · Premium form

Vitamin K100 mcg

Within effective range · Premium form

Label Nutrition Facts

Active Ingredients

From the label · % Daily Value

DV%

Vitamin D125 mcg

833%

Vitamin K100 mcg

83%

Other Ingredients

Fillers, coatings, and additives

6Safe

Coconut OilCarrier

Safe

GlycerinHumectant

Safe

Rice Bran WaxCoating

Safe

Extra Virgin Olive OilCarrier

Safe

StarchBinder

Safe

Purified WaterSolvent

Safe

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and 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. clinical 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.