Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels vs California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules

How they differ in real use

Built from our vitamin d3 k2 supplements scoring, each product's published specifications, and verified owner feedback — not hands-on testing.

Both the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels and the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules made our Top 5 Vitamin D3 + K2 Supplements, at #2 (best premium) and #3. ISURA verification and substantially greater iHerb buying history than Nordic are meaningful strengths. Nordic ranks slightly higher because its D3 dose more closely matches a major adult trial, its excipient list is cleaner and its active-unit value is better. Exceptional active-unit value and unmatched iHerb sales break ties against similarly formulated products. It remains below the top two because the public product-specific report is unavailable and its 5,000 IU D3 dose exceeds the adult upper limit.

We score vitamin d3 + k2 supplements on Third-Party Testing (30%), Form & Bioavailability (25%), Dose vs Research (20%), Label Transparency (15%) and Value (10%). On that basis the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels totals 7.4 out of 10 and the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules 7.2. The widest gap is Third-Party Testing, where the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels scores 8 against 5 for the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules — independent certification or a published certificate of analysis. Value also separates them: 10 for the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules versus 3 for the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels. The California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules claws back ground on Label Transparency.

On paper, the specifications that actually differ: Vitamin D3 per Serving — 25 mcg (1,000 IU) on the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels versus 125 mcg (5,000 IU) on the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules; K2 Form and Source — Menaquinone-7 (MK-7) from natto bean on the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels versus Menaquinone-7 (MK-7); source not stated on the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules; Serving Size — 1 softgel on the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels versus 1 capsule on the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules; Delivery and Fat Carrier — Gelatin softgel with palm- and coconut-derived MCT on the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels versus Hypromellose veggie capsule with MCT oil listed among other ingredients on the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules; Dietary and Allergen Notes — No dairy, wheat, gluten, yeast, sesame, egg, fish or shellfish; contains gelatin and beeswax on the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels versus Formulated without gluten, GMOs or soy; manufactured in a facility that may process declared allergens on the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules; Testing Evidence — ISURA Verified Clean and Non-GMO seals on the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels versus Independent ISO-laboratory testing claimed; product-specific iTested report marked Coming Soon on the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules. They match on D3 Form and Source and Vitamin K2 per Serving.

Pricing as of August 5, 2026: $20.97 for the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels and $16.2 for the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules, a $4.77 difference in the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules's favor. Owners praise the Natural Factors, Vitamin D3 & K2, 25 mcg (1,000 IU) & 120 mcg, 60 Softgels for ISURA Verified Clean independently covers the finished product for a broad contaminant panel. and the label discloses 120 mcg of MK-7 sourced from natto bean rather than an unspecified vitamin K blend.; the most common complaint is the softgel contains gelatin, beeswax and caramel color, so it is not vegan and has more excipients than the Nordic formula. Owners praise the California Gold Nutrition, Vitamin D3 + K2 MK-7, 180 Capsules for the 180-serving bottle costs about $0.018 per 1,000 IU of D3 and $0.075 per 100 mcg of K2. and the full label discloses 120 mcg of MK-7 without a proprietary blend.; the most common complaint is the 5,000 IU D3 serving exceeds the US adult tolerable upper intake level of 4,000 IU per day from all sources.