Niacin (as Niacinamide) + Vitamin K2 — Supplement Stacking Guide
Found together in 6 real supplement products in our database
What Each Ingredient Does
Our database of real supplement products shows that Niacin (as Niacinamide) and Vitamin K2 appear together in 6 products, making this one of the more common pairings among supplement formulators. The evidence and dosing guidance below apply to each ingredient independently.
Niacin (as Niacinamide)
Preferred form: Niacin (as Niacinamide) (S2 bioavailability)
May support: cellular energy production via NAD+ pathway, skin health and barrier function, joint comfort and mobility.
Oral nicotinamide was rapidly absorbed in healthy volunteers, with the standard form achieving significantly higher peak plasma concentrations and bioavailability than sustained-release preparations. PubMed
Vitamin K2
Preferred form: Vitamin K2 (as MK-7) (S1 bioavailability)
May support: healthy calcium metabolism and bone mineral density, cardiovascular health by directing calcium away from arterial walls, healthy blood clotting cascade.
Crossover RCT (n=5 healthy women): single dose MK-4 (420μg) was undetectable in serum at all time points; MK-7 (420μg) reached peak serum concentration at 6 hours and was detectable up to 48 hours post-intake. Consecutive daily MK-7 produced significant cumulative serum accumulation; MK-4 showed none. PubMed
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Niacin (as Niacinamide)
Frequently Asked Questions
What is the best form of Niacin (as Niacinamide)?
Niacin (as Niacinamide) is the Preferred Form form of Niacin (as Niacinamide) in the FormulaForge formulary, reflecting research-backed evidence for superior bioavailability (good). This classification is based on published absorption studies and peer-reviewed bioavailability data. The best form for you depends on your individual health goals and your healthcare provider's recommendations. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen.
What are the benefits of Niacin (as Niacinamide)?
Niacin (as Niacinamide) has been studied for its role in supporting: Supports cellular energy production via NAD+ pathway, Supports skin health and barrier function, Supports joint comfort and mobility, Supports healthy inflammatory response. Niacinamide (nicotinamide) is the amide form of vitamin B3 that does not cause the flushing associated with nicotinic acid. Research supports its role in NAD+ synthesis, skin barrier function (widely used in dermatology), and joint comfort. Unlike niacin, niacinamide does not significantly affect lipid profiles but provides superior NAD+ precursor activity for cellular energy. These statements are based on structure/function research and have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease.
What is the best form of Vitamin K2?
Vitamin K2 (as MK-7) is the Preferred Form form of Vitamin K2 in the FormulaForge formulary, reflecting research-backed evidence for superior bioavailability (high). This classification is based on published absorption studies and peer-reviewed bioavailability data. The best form for you depends on your individual health goals and your healthcare provider's recommendations. Always consult a qualified healthcare provider before starting, stopping, or adjusting any supplement regimen.
What are the benefits of Vitamin K2?
Vitamin K2 has been studied for its role in supporting: Supports healthy calcium metabolism and bone mineral density, Supports cardiovascular health by directing calcium away from arterial walls, Supports healthy blood clotting cascade, Synergizes with vitamin D3 for optimal calcium utilization. These statements are based on structure/function research and have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease.
Can you take Niacin (as Niacinamide) and Vitamin K2 at the same time?
Niacin (as Niacinamide) and Vitamin K2 appear together in 6 products in our database of real supplement formulas. That reflects a common formulator pairing — it is not, by itself, evidence that combining them produces an additive or synergistic effect beyond what each ingredient contributes independently. As with any supplement regimen, consult a qualified healthcare provider to confirm the combination is appropriate for your individual health needs.
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- Oral nicotinamide was rapidly absorbed in healthy volunteers, with the standard form achieving significantly higher peak plasma concentrations and bioavailability than sustained-release preparations. PubMed
- Crossover RCT (n=5 healthy women): single dose MK-4 (420μg) was undetectable in serum at all time points; MK-7 (420μg) reached peak serum concentration at 6 hours and was detectable up to 48 hours post-intake. Consecutive daily MK-7 produced significant cumulative serum accumulation; MK-4 showed none. PubMed
- Healthy volunteers: natto-derived MK-7 accumulated 7-8 fold higher serum levels than synthetic vitamin K1 (phylloquinone) during prolonged supplementation. MK-7 induced more complete carboxylation of osteocalcin (extrahepatic tissue marker) vs K1. Both absorbed with peak at 4 hours; MK-7 sustained versus K1 rapid decline. PubMed
- Review: Postprandial serum MK-7 concentrations reported 10-fold higher than K1 (phylloquinone). K1 primarily retained in liver for coagulation; MK-7 redistributes to extrahepatic tissues (bone, vasculature) due to longer circulating half-life. Long-chain menaquinones detectable up to 96 hours vs 8-24 hours for K1. PubMed
This information is educational and not a substitute for professional medical advice. Consult your physician before making supplement decisions.
FormulaForge formulates and sells supplements containing the ingredients discussed on this page. Our formulary recommendations are based on peer-reviewed bioavailability research. All cited studies are independently verifiable.