Carlson Labs

Super D3 + K2, 90 Capsules

Carlson Labs' Super D3 + K2 combines cholecalciferol (vitamin D3) with menaquinone-7 (MK-7), the long-acting form of vitamin K2, in a single softgel designed to support calcium metabolism, bone integrity, and cardiovascular health.

4.7 across 2 sources

May be a fit for

  • Adults seeking combined vitamin D3 and K2 for bone mineral support
  • Those monitoring calcium metabolism who want K2's carboxylation support
  • Individuals with limited sun exposure supplementing D3 daily
$42.99

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CapsulesFormat
90 CapsulesPack size
The essentials

A closer look.

Carlson Labs' Super D3 + K2 combines cholecalciferol (vitamin D3) with menaquinone-7 (MK-7), the long-acting form of vitamin K2, in a single softgel designed to support calcium metabolism, bone integrity, and cardiovascular health. This pairing reflects growing understanding of how D3 and K2 work together to direct calcium toward bones and teeth rather than soft tissues.

Why It's Worth Considering: Carlson uses oil-based softgel delivery for fat-soluble nutrient absorption, and their D3 products are regularly third-party tested for potency and purity.

The Apotheca perspective

50+ signals. A clearer standard.

Our curation and trust scoring bring together manufacturing, testing, research, practitioner insight and reviews from across the web.

79OUT OF 100
Manufacturing5757
Lab verification6565
Transparency6060

Our score is an editorial assessment, not a product certification or a guarantee of results.

Inside the formula

Product details

Who it may suit

May be a fit for

  • Adults seeking combined vitamin D3 and K2 for bone mineral support
  • Those monitoring calcium metabolism who want K2's carboxylation support
  • Individuals with limited sun exposure supplementing D3 daily
  • Older adults supporting vitamin D3 levels alongside K2 activity

Considerations

  • Known allergy to any ingredient (check label)
  • Currently pregnant or breastfeeding (consult healthcare provider)
  • Taking prescription medications (check for interactions)
  • Under 18 years of age (unless recommended by pediatrician)
Compatibility & interactions

Works Well With

Magnesium
Magnesium is required for vitamin D activation
Vitamin K2
K2 directs calcium to bones
Omega-3
Both support immune function

Take Separately From

No significant interactions identified. Always consult your healthcare provider.

From across the web

Real reviews. A wider perspective.

Customer reviews, social conversations and expert insights, with every source in view.

4.7/5Aggregate source rating
Marketplaces & brand websites
Amazon, iHerb and direct brand reviews
Social & community
Reddit, X, Instagram and TikTok
Video & creators
YouTube and creator perspectives

Coverage varies by product and brand.

995 product and brand ratings and mentions across 2 sources.

Good to know

A few useful answers.

Research & further reading

More category questions

How should I store this supplement?

Store in a cool, dry place away from direct sunlight. Most supplements are stable at room temperature (59-77°F). Keep the bottle sealed between uses. Check the label for any specific storage requirements — some probiotics and oils require refrigeration.

Can I take this with other supplements?

Most supplements can be taken together safely. However, some minerals compete for absorption (zinc and iron, calcium and magnesium) and should be taken at different times of day. If you're taking prescription medications, consult your healthcare provider about potential interactions.

How long should I take this supplement?

Most supplements benefit from consistent daily use over 2-3 months to achieve full effect. Some (like vitamins and minerals) can be taken indefinitely as part of a daily routine. Others (like specific herbs) may benefit from cycling. Follow the product's recommended protocol or consult a practitioner.

When is the best time to take this?

Fat-soluble supplements (vitamins A, D, E, K, omega-3, CoQ10) should be taken with a meal containing fat. Water-soluble supplements (B vitamins, vitamin C) can be taken anytime. Minerals are generally best absorbed with food. Probiotics should be taken with or just before a meal. Check the product label for specific timing recommendations.

How do I know if this supplement is working?

Track your specific health goals — energy levels, sleep quality, joint comfort, digestion, mood, etc. Most supplements take 2-8 weeks for noticeable effects. For objective measurement, baseline lab tests before starting (and repeat at 3 months) provide definitive evidence. The Gabriel Score incorporates clinical evidence for expected outcomes.

Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.

Carlson Labs - Super D3 + K2, 90 Capsules Carlson Labs

Apotheca quality score

79/100

The overall score combines several sources of information. The individual dimensions below show where those signals are stronger or more limited; they are not a simple average of the overall score.

Manufacturing5757
Lab verification6565
Review consensus100100
Practitioner signals52.052.0
Community signals6363
Transparency6060
See available brand signals
✓
Good manufacturing practices verifiedStandard
✓
Quality ingredients with verified sourcingGood
✓
Clean FDA regulatory recordNo issues
✓
Positive consumer reviews and community feedbackGood
✓
Authorized distribution channel verifiedDirect

Our score is an editorial assessment, not a product certification or a guarantee of results.

How our scoring works ↗