D3 + K2

For optimal results, take one to two capsules daily with a meal, or as directed by your healthcare provider.

Why Choose Vitamin D3 + K2 by TRT LABORATORIES, INC?

• Synergistic Formula:
Our unique combination of Vitamin D3 and K2 ensures maximum efficacy and benefits for your health.

• High-Quality Ingredients:
We use only the highest quality ingredients, ensuring potency and purity in every capsule.

• Scientifically Backed:
Our product is formulated based on extensive research and clinical studies, providing you with a supplement you can trust.

Embrace the synergy of Vitamin D3 + K2 by TRT LABORATORIES, INC, and enhance your Testosterone optimizing journey.

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Effect of vitamin D supplementation on testosterone levels in men. Hormone and Metabolic Research, 43(3), 223-225.

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Vitamin D and fertility: a systematic review. European Journal of Endocrinology, 166(5), 765-778.

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Vitamin K-dependent carboxylation of matrix Gla-protein: a crucial switch to control ectopic mineralization. Trends in Molecular Medicine, 19(4), 217-226.

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Vitamin K2 treatment in postmenopausal osteoporosis: Final results of a randomized controlled trial. Osteoporosis International, 27(11), 3495-3503.

5. Gast, G. C., de Roos, N. M., Sluijs, I., Bots, M. L., Beulens, J. W., Geleijnse, J. M., ... & Peeters, P. H. (2009).
A high menaquinone intake reduces the incidence of coronary heart disease. Nutrition, Metabolism and Cardiovascular Diseases, 19(7), 504-510.

6. Beulens, J. W., Booth, S. L., van den Heuvel, E. G., Stoecklin, E., Baka, A., & Vermeer, C. (2013).
The role of menaquinones (vitamin K2) in human health. British Journal of Nutrition, 110(8), 1357-1368.

7. Gombart, A. F., Borregaard, N., &Koeffler, H. P. (2005).
Human cathelicidin antimicrobial peptide (CAMP) gene is a direct target of the vitamin D receptor and is strongly up-regulated in myeloid cells by 1,25-dihydroxyvitamin D3. The FASEB Journal, 19(9), 1067-1077.

8. Cannell, J. J., Vieth, R., Umhau, J. C., Holick, M. F., Grant, W. B., Madronich, S., ... & Giovannucci, E. (2006).
Epidemic influenza and vitamin D. Epidemiology and Infection, 134(6), 1129-1140.

9. Stockton, K. A., Mengersen, K., Paratz, J. D., Kandiah, D., & Bennell, K. L. (2011).
Effect of vitamin D supplementation on muscle strength: a systematic review and meta-analysis. Osteoporosis International, 22(3), 859-871.

10. Ceglia, L. (2009).
Vitamin D and its role in skeletal muscle. Current Opinion in Clinical Nutrition & Metabolic Care, 12(6), 628-633.

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Vitamin D and the occurrence of depression: causal association or circumstantial evidence? Nutrition Reviews, 67(8), 481-492.

12. Penckofer, S., Kouba, J., Byrn, M., &Estwing Ferrans, C. (2010).
Vitamin D and depression: Where is all the sunshine? Issues in Mental Health Nursing, 31(6), 385-393.