Our "No Return Necessary"
Money-Back Guarantee
If you don’t like something of ours, guess what happens next?
No, we don’t request you deliver it to a PO box in the Gobi Desert by carrier pigeon. Nor do we ask you to fill a cursed inkwell with orc’s blood and demon saliva and then use it to complete reams of return forms written in ancient Cyrillic script.
We just . . . wait for it . . . give you your money back. Holy moo cows. And that means you can say "yes" now and decide later.
Will Vitamin D+K maximize energy and immunity and banish fatigue and anxiety?
No.
Will it give you glowing skin, hair, and nails overnight?
Absolutely not.
But can Vitamin D+K support your bone health, muscle function and performance, and immune health?
Yes. Or your money back.
And how can Vitamin D+K do these things?
Vitamins D3, K1, and K2 are critical nutrients involved in the production of numerous enzymes and hormones in the body that regulate critical processes like calcium metabolism, blood clotting, bone and cardiovascular health, immune health, insulin sensitivity, and more.
Despite their importance, however, research shows that as many as 20% of people aren’t getting enough vitamin D3 for optimal health and performance and 48% of people aren’t getting enough vitamin K1 and K2, including those with a healthy diet and lifestyle.[8][9][10][11]
These “subclinical deficiencies” are serious, too—they’re associated with numerous health problems, including mood disruption, muscle weakness, impaired bone and heart health, and more.[12][13][14][15][16][17]
What’s more, while it’s possible to get enough vitamin D and K to maintain health through diet alone, this can be difficult because:
- The best natural source of vitamin D3 is exposure to sunlight, and many people don’t consistently spend enough time in the sun to produce enough vitamin D3, especially those who use sunscreen or have darker skin pigmentation.[18][19][20]
- There aren’t many practical dietary sources of vitamin K1 and K2, with the best choices being dark leafy greens, cheese, butter, seaweed, fermented foods, and pork and chicken—foods that many people don’t eat enough of to meet their body’s K1 and K2 needs.
- There are several factors that can interfere with the body’s absorption and utilization of vitamins D3, K1, and K2, including gut health, age, body composition, and genetics.[21][22][23][24]
Additionally, research suggests that the recommended daily allowance (RDA) for vitamins D3, K1, and K2 is adequate for preventing deficiencies, but they may not produce optimal health and longevity, which should be the ultimate goal.
Thus, many health-conscious people who eat a nutritious diet also choose to supplement with vitamins D3, K1, and K2, especially if they’re physically active (because this may increase the body’s needs for these vitamins).[25]
So order now, try Vitamin D+K risk-free, and see for yourself why we believe it’s the perfect vitamin D3, K1, and K2 supplement.
Will Vitamin D+K maximize energy and immunity and banish fatigue and anxiety?
No.
Will it give you glowing skin, hair, and nails overnight?
Absolutely not.
But can Vitamin D+K support your bone health, muscle function and performance, and immune health?
Yes. Or your money back.
And how can Vitamin D+K do these things?
Vitamins D3, K1, and K2 are critical nutrients involved in the production of numerous enzymes and hormones in the body that regulate critical processes like calcium metabolism, blood clotting, bone and cardiovascular health, immune health, insulin sensitivity, and more.
Despite their importance, however, research shows that as many as 20% of people aren’t getting enough vitamin D3 for optimal health and performance and 48% of people aren’t getting enough vitamin K1 and K2, including those with a healthy diet and lifestyle.[1][2][3][4]
These “subclinical deficiencies” are serious, too—they’re associated with numerous health problems, including mood disruption, muscle weakness, impaired bone and heart health, and more.[5][6][7][8][9][10]
What’s more, while it’s possible to get enough vitamin D and K to maintain health through diet alone, this can be difficult because:
- The best natural source of vitamin D3 is exposure to sunlight, and many people don’t consistently spend enough time in the sun to produce enough vitamin D3, especially those who use sunscreen or have darker skin pigmentation.[11][12][13]
- There aren’t many practical dietary sources of vitamin K1 and K2, with the best choices being dark leafy greens, cheese, butter, seaweed, fermented foods, and pork and chicken—foods that many people don’t eat enough of to meet their body’s K1 and K2 needs.
- There are several factors that can interfere with the body’s absorption and utilization of vitamins D3, K1, and K2, including gut health, age, body composition, and genetics.[14][15][16][17]
Additionally, research suggests that the recommended daily allowance (RDA) for vitamins D3, K1, and K2 is adequate for preventing deficiencies, but they may not produce optimal health and longevity, which should be the ultimate goal.
Thus, many health-conscious people who eat a nutritious diet also choose to supplement with vitamins D3, K1, and K2, especially if they’re physically active (because this may increase the body’s needs for these vitamins).[18]
- 25 peer-reviewed scientific studies support Vitamin D+K’s doses of vitamins D3, K1, and K2[19]
- Contains no artificial fillers, food dyes, or other chemical junk[20]
- Analyzed for purity and potency in a state-of-the-art ISO 17025 accredited lab[21]
- Total formulation transparency (no proprietary blends)[22]
- Made in the USA with globally sourced ingredients in NSF-certified and FDA-inspected facilities that adhere to Current Good Manufacturing Practice standards
Vitamin D+K is also backed by our “No Return Necessary” money-back guarantee that works like this:
If you don’t absolutely love Vitamin D+K, just let us know, and we’ll give you a full refund on the spot. No forms or return necessary.
So order now, try Vitamin D+K risk-free, and see for yourself why we believe it’s the perfect vitamin D3, K1, and K2 supplement.
Notice to California Consumers
WARNING: Consuming this product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food.
Legion Vitamin D+K Ingredients (330 micrograms per serving)
Vitamin D3 (50 micrograms/2,000 IU per serving)
Vitamin D3 (cholecalciferol) is a substance that plays a critical role in the synthesis of many hormones and enzymes that support physical and mental health, performance, and well-being, including testosterone, estrogen, calcitriol, and others.
Research shows that supplementation with vitamin D3 . . .
- Supports bone health and strength[23][24]
- Supports immune health and reduces the risk of respiratory infections[25]
- Supports muscle function and performance[26][27][28][29]
- Supports calcium absorption[30][31]
- Supports insulin secretion and reduces the risk of insulin resistance[32][33]
The recommended daily allowance (RDA) for vitamin D3 for adults is between 15 and 20 mcg (600 and 800 IU), but research shows that this often isn’t enough to prevent deficiencies or insufficiencies, even in people who eat a healthy diet.[34]
On the contrary, studies show that 50 mcg (2,000 IU) per day is required to safely prevent vitamin D3 deficiencies and insufficiencies in nearly everyone.[35]
Vitamin D+K contains 50 mcg (2,000 IU) of vitamin D3.
Vitamins K1 and K2 (280 micrograms per serving)
Vitamins K1 and K2 are substances required for hundreds of key bodily processes, including bone metabolism, blood clotting, blood vessel health, and more.
For example, vitamins K1 and K2 are needed to activate and utilize a protein called osteocalcin, which helps maintain healthy bones, and another called prothrombin, which improves blood clotting and wound healing.[36][37]
Vitamins K1 and K2 also activate a group of proteins in the body called Matrix Gla, which reduce calcium buildup in blood vessels and thereby can support circulation and heart health.[38]
Despite the vital importance of these vitamins, however, it can be difficult to get enough to maintain health through diet alone because . . .
- Foods high in vitamin K1 tend to be low in vitamin K2 and vice versa.
- Plant sources of both vitamins are often poorly absorbed.[39]
Thus, many health-conscious people who eat a nutritious diet also choose to supplement with vitamins K1 and K2, and with the MK-7 form of vitamin K2 in particular (rather than MK-4 or MK-9) because it’s the most scientifically validated form for enhancing vitamin K2 status.[40][41][42]
Research shows that supplementation with vitamins K1 and K2 . . .
- Supports bone health and strength, especially when taken with vitamin D3[43][44][45][46][47][48][49][50]
- Supports heart and vascular health[51][52][53]
- Supports cognitive health[54]
The recommended daily allowance (RDA) for vitamin K is 120 mcg per day for men and women (and currently, it doesn’t specify how this should break down into K1 and K2), but studies show that this amount is likely suboptimal for maximizing health and performance.[55][56][57][58]
For example, research showing improvements in bone mineral density and cardiovascular health from vitamin K2 supplementation has typically used doses of 180 mcg per day.[59] What’s more, other studies have found that consuming 300-to-500 mcg of vitamin K1 per day was associated with improved cognitive health and insulin sensitivity.[60]
Vitamin D+K contains 280 mcg of vitamin K, with 100 mcg of vitamin K1 (as phytonadione) and 180 mcg of vitamin K2 (as MK-7).
No Artificial Food Dyes, Fillers, or Other Unnecessary Junk
Artificial food dyes aren’t a hazard per se, but studies show they can cause negative effects in some people, including gastrointestinal toxicity and behavioral disorders.[61][62][63][64][65]
Third-Party Lab Tested for Potency & Purity
Every bottle of Vitamin D+K is analyzed in a state-of-the-art ISO 17025 accredited lab to verify what is and isn’t in it. That way, you know exactly what you’re getting and putting into your body.
See how Legion Vitamin D+K compares to the rest.
- Active Ingredients
Per Serving - Clinically Effective Ingredients
& Doses - Vitamin D
- Vitamin K1
- Vitamin K2 (MK-7)
- Third-Party Lab Tested
- Labdoor Certified Brand
- Price Per Serving
-
Legion
Vitamin D+K - 330 mcg
per serving - 50 mcg/2,000 IU
per serving - 100 mcg
per serving - 180 mcg
per serving - $
-
Transparent Labs
D3 + K2 - 225 mcg
per serving - 125 mcg/5,000 IU
per serving - 100 mcg
per serving - $0.50
-
Sports Research
Vitamin D3 + K2 - 225 mcg
per serving - 125 mcg/5,000 IU
per serving - 100 mcg
per serving - $0.56
-
NOW Foods
Vitamin D-3 & K-2 - 70 mcg
per serving - 25 mcg/1,000 IU
per serving - $0.09
The #1 brand of natural sports supplements.
5+ million bottles sold to 1+ million customers who have left us 45,000+ 5-star reviews.
Natural Ingredients
Vitamin D+K doesn’t just “contain natural ingredients”—every ingredient is naturally sourced. We don’t use artificial or synthetic substances of any kind.
Science-Backed Ingredients
Every ingredient in Vitamin D+K is backed by peer-reviewed scientific research demonstrating clear benefits in healthy humans.
Clinically Effective Ingredients & Doses
Every ingredient in Vitamin D+K is included at clinically effective levels, which are the exact amounts shown to be safe and effective in peer-reviewed scientific research.
Third-Party Lab Tested
Vitamin D+K is tested by third-party labs for heavy metals, microbes, allergens, and other contaminants to ensure it meets FDA purity standards.
Made in the USA
Vitamin D+K is made in America with globally sourced ingredients in NSF-certified, FDA-inspected facilities that adhere to Current Good Manufacturing Practice (cGMP) standards.
"No Return Necessary"
Money-Back Guarantee
If you don't absolutely love Vitamin D+K, you get a prompt and courteous refund. No forms or returns necessary.
Trusted by scientists, doctors, and everyday fitness folk alike.
Frequently Asked Questions
+References
Vitamin D+K doesn’t just “contain natural ingredients''—every ingredient is naturally sourced from plants and animals. Vitamin D+K contains no artificial or synthetic substances of any kind.↑
Every serving of Vitamin D+K contains 330 micrograms of active ingredients that have been shown to be safe and effective in peer-reviewed scientific research. ↑
Each active ingredient in Vitamin D+K is backed by published scientific studies that show benefits in healthy humans. ↑
United States Department of Agriculture. Accessed May 10, 2023.↑
United States Department of Agriculture. Accessed May 10, 2023.↑
National Institutes of Health Office of Dietary Supplements↑
Ames BN, Grant WB, Willett WC. Nutrients. 2021;13(2):499. Published 2021 Feb 3. doi:10.3390/nu13020499.↑
Thacher TD, Clarke BL. Mayo Clin Proc. 2011;86(1):50-60. doi:10.4065/mcp.2010.0567.↑
De Martinis M, Allegra A, Sirufo MM, et al. Int J Mol Sci. 2021;22(16):8855. Published 2021 Aug 17. doi:10.3390/ijms22168855.↑
Capatina C, Carsote M, Caragheorgheopol A, Poiana C, Berteanu M. Maedica (Bucur). 2014;9(4):316-322.↑
Villareal DT, Civitelli R, Chines A, Avioli LV. J Clin Endocrinol Metab. 1991 Mar;72(3):628-34. doi: 10.1210/jcem-72-3-628. PMID: 1997517.↑
Anglin RE, Samaan Z, Walter SD, McDonald SD. Br J Psychiatry. 2013 Feb;202:100-7. doi: 10.1192/bjp.bp.111.106666. PMID: 23377209.↑
Geleijnse JM, Vermeer C, Grobbee DE, et al. J Nutr. 2004;134(11):3100-3105. doi:10.1093/jn/134.11.3100.↑
Holick MF. Am J Clin Nutr. 2004;79(3):362-371. doi:10.1093/ajcn/79.3.362 [published correction appears in Am J Clin Nutr. 2004 May;79(5):890].↑
Neale RE, Khan SR, Lucas RM, Waterhouse M, Whiteman DC, Olsen CM. Br J Dermatol. 2019;181(5):907-915. doi:10.1111/bjd.17980.↑
Webb AR, Kazantzidis A, Kift RC, Farrar MD, Wilkinson J, Rhodes LE. Nutrients. 2018;10(4):457. Published 2018 Apr 7. doi:10.3390/nu10040457.↑
Yan H, Chen Y, Zhu H, et al. Front Med (Lausanne). 2022;9:829304. Published 2022 Apr 18. doi:10.3389/fmed.2022.829304.↑
Al Hayek S, Matar Bou Mosleh J, Ghadieh R, El Hayek Fares J. BMC Nutr. 2018;4:31. Published 2018 Jul 26. doi:10.1186/s40795-018-0239-6.↑
van Ballegooijen AJ, van Putten SR, Visser M, Beulens JW, Hoogendijk EO. Maturitas. 2018;113:73-79. doi:10.1016/J.MATURITAS.2018.04.013.↑
Gallagher JC. Endocrinol Metab Clin North Am. 2013;42(2):319-332. doi:10.1016/j.ecl.2013.02.004.↑
Research I of M (US) C on MN, Marriott BM. 1993. Accessed May 17, 2023.↑
That’s 375 pages of scientific research that shows Vitamin D+K works exactly like we say it does.↑
While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health. And that’s why you won’t find them in Vitamin D+K.↑
Every bottle of Vitamin D+K is guaranteed to provide exactly what the label claims and nothing else—no heavy metals, microbes, allergens, or other contaminants.↑
This means you know exactly what’s in every serving of Vitamin D+K—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation.↑
Vitamin D+K doesn’t just “contain natural ingredients''—every ingredient is naturally sourced from plants and animals. Vitamin D+K contains no artificial or synthetic substances of any kind.↑
Every serving of Vitamin D+K contains 330 micrograms of active ingredients that have been shown to be safe and effective in peer-reviewed scientific research. ↑
Each active ingredient in Vitamin D+K is backed by published scientific studies that show benefits in healthy humans. ↑
That’s 375 pages of scientific research that shows Vitamin D+K works exactly like we say it does. ↑
While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health. And that’s why you won’t find them in Vitamin D+K. ↑
Every bottle of Vitamin D+K is guaranteed to provide exactly what the label claims and nothing else—no heavy metals, microbes, allergens, or other contaminants.↑
This means you know exactly what’s in every serving of Vitamin D+K—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation. ↑
United States Department of Agriculture. Accessed May 10, 2023.↑
United States Department of Agriculture. Accessed May 10, 2023.↑
National Institutes of Health Office of Dietary Supplements↑
Ames BN, Grant WB, Willett WC. Nutrients. 2021;13(2):499. Published 2021 Feb 3. doi:10.3390/nu13020499.↑
Thacher TD, Clarke BL. Mayo Clin Proc. 2011;86(1):50-60. doi:10.4065/mcp.2010.0567.↑
De Martinis M, Allegra A, Sirufo MM, et al. Int J Mol Sci. 2021;22(16):8855. Published 2021 Aug 17. doi:10.3390/ijms22168855.↑
Capatina C, Carsote M, Caragheorgheopol A, Poiana C, Berteanu M. Maedica (Bucur). 2014;9(4):316-322.↑
Villareal DT, Civitelli R, Chines A, Avioli LV. J Clin Endocrinol Metab. 1991 Mar;72(3):628-34. doi: 10.1210/jcem-72-3-628. PMID: 1997517.↑
Anglin RE, Samaan Z, Walter SD, McDonald SD. Br J Psychiatry. 2013 Feb;202:100-7. doi: 10.1192/bjp.bp.111.106666. PMID: 23377209.↑
Geleijnse JM, Vermeer C, Grobbee DE, et al. J Nutr. 2004;134(11):3100-3105. doi:10.1093/jn/134.11.3100.↑
Holick MF. Am J Clin Nutr. 2004;79(3):362-371. doi:10.1093/ajcn/79.3.362.↑
Neale RE, Khan SR, Lucas RM, Waterhouse M, Whiteman DC, Olsen CM. Br J Dermatol. 2019;181(5):907-915. doi:10.1111/bjd.17980.↑
Webb AR, Kazantzidis A, Kift RC, Farrar MD, Wilkinson J, Rhodes LE. Nutrients. 2018;10(4):457. Published 2018 Apr 7. doi:10.3390/nu10040457.↑
Yan H, Chen Y, Zhu H, et al. Front Med (Lausanne). 2022;9:829304. Published 2022 Apr 18. doi:10.3389/fmed.2022.829304.↑
Al Hayek S, Matar Bou Mosleh J, Ghadieh R, El Hayek Fares J. BMC Nutr. 2018;4:31. Published 2018 Jul 26. doi:10.1186/s40795-018-0239-6.↑
van Ballegooijen AJ, van Putten SR, Visser M, Beulens JW, Hoogendijk EO. Maturitas. 2018;113:73-79. doi:10.1016/J.MATURITAS.2018.04.013.↑
Gallagher JC. Endocrinol Metab Clin North Am. 2013;42(2):319-332. doi:10.1016/j.ecl.2013.02.004.↑
Research I of M (US) C on MN, Marriott BM. 1993. Accessed May 17, 2023.↑
National Institutes of Health Office of Dietary Supplements. Accessed May 10, 2023.↑
Chung M, Balk EM, Brendel M, et al. Evid Rep Technol Assess (Full Rep). Aug 2009;(183):1-420.↑
Martineau AR, Jolliffe DA, Greenberg L, et al. Health Technol Assess. Jan 2019;23(2):1-44. doi:10.3310/hta23020↑
National Institutes of Health Office of Dietary Supplements. Accessed May 10, 2023.↑
Ramezani Ahmadi A, Mohammadshahi M, Alizadeh A, Ahmadi Angali K, Jahanshahi A. Eur J Sport Sci. Nov 2020;20(10):1355-1367. doi:10.1080/17461391.2020.1713218↑
Michalczyk MM, Gołaś A, Maszczyk A, Kaczka P, Zając A. Nutrients. 2020;12(5):1311. Published 2020 May 4. doi:10.3390/nu12051311.↑
Kerksick CM, Wilborn CD, Roberts MD, et al. J Int Soc Sports Nutr. Aug 1 2018;15(1):38. doi:10.1186/s12970-018-0242-y↑
National Institutes of Health Office of Dietary Supplements. Accessed May 10, 2023.↑
Christakos S. Rev Endocr Metab Disord. 2012;13(1):39-44. doi:10.1007/s11154-011-9197-x. ↑
Borissova AM, Tankova T, Kirilov G, Dakovska L, Kovacheva R. Int J Clin Pract. May 2003;57(4):258-61. ↑
Mitri J, Dawson-Hughes B, Hu FB, Pittas AG. Am J Clin Nutr. Aug 2011;94(2):486-94. doi:10.3945/ajcn.111.011684↑
National Institutes of Health Office of Dietary Supplements. Accessed May 10, 2023.↑
Ibid. ↑
Inaba N, Sato T, Yamashita T. J Nutr Sci Vitaminol (Tokyo). 2015;61(6):471-480. doi:10.3177/jnsv.61.471.↑
Shearer MJ, Bach A, Kohlmeier M. J Nutr. 1996;126(4 Suppl):1181S-6S. doi:10.1093/jn/126.suppl_4.1181S.↑
Murshed M, Schinke T, McKee MD, Karsenty G. J Cell Biol. 2004;165(5):625-630. doi:10.1083/jcb.200402046.↑
National Institutes of Health Office of Dietary Supplements. Accessed May 10, 2023.↑
Sato T, Inaba N, Yamashita T. Nutrients. 2020;12(4):965. Published 2020 Mar 31. doi:10.3390/nu12040965.↑
Sato T, Schurgers LJ, Uenishi K. Nutr J. 2012;11:93. Published 2012 Nov 12. doi:10.1186/1475-2891-11-93.↑
Jadhav N, Ajgaonkar S, Saha P, et al. Front Pharmacol. 2022;13:896920. Published 2022 Jun 14. doi:10.3389/fphar.2022.896920.↑
National Institutes of Health Office of Dietary Supplements. Accessed April 2023.↑
Knapen MH, Drummen NE, Smit E, Vermeer C, Theuwissen E. Osteoporos Int. Sep 2013;24(9):2499-507. doi:10.1007/s00198-013-2325-6.↑
Forli L, Bollerslev J, Simonsen S, et al. Transplantation. Feb 27 2010;89(4):458-64. doi:10.1097/TP.0b013e3181c46b69.↑
Akbulut AC, Wasilewski GB, Rapp N, et al. Front Cell Dev Biol. 2020;8:618760. doi:10.3389/fcell.2020.618760.↑
Sato T, Inaba N, Yamashita T. Nutrients. Mar 31 2020;12(4)doi:10.3390/nu12040965.↑
Inaba N, Sato T, Yamashita T. J Nutr Sci Vitaminol (Tokyo). 2015;61(6):471-80. doi:10.3177/jnsv.61.471.↑
Yao P, Bennett D, Mafham M, et al. JAMA Network Open. 2019;2(12):e1917789-e1917789. doi:10.1001/jamanetworkopen.2019.17789.↑
Kidd PM. Altern Med Rev. Sep 2010;15(3):199-222.↑
Geleijnse JM, Vermeer C, Grobbee DE, et al. J Nutr. Nov 2004;134(11):3100-5. doi:10.1093/jn/134.11.3100.↑
Beulens JW, Bots ML, Atsma F, et al. Atherosclerosis. Apr 2009;203(2):489-93. doi:10.1016/j.atherosclerosis.2008.07.010.↑
Shea MK, O'Donnell CJ, Hoffmann U, et al. Am J Clin Nutr. Jun 2009;89(6):1799-807. doi:10.3945/ajcn.2008.27338.↑
National Institutes of Health Office of Dietary Supplements. Accessed April 2023.↑
Knapen MH, Drummen NE, Smit E, Vermeer C, Theuwissen E. Osteoporos Int. Sep 2013;24(9):2499-507. doi:10.1007/s00198-013-2325-6.↑
Forli L, Bollerslev J, Simonsen S, et al. Transplantation. Feb 27 2010;89(4):458-64. doi:10.1097/TP.0b013e3181c46b69.↑
Inaba N, Sato T, Yamashita T. J Nutr Sci Vitaminol (Tokyo). 2015;61(6):471-80. doi:10.3177/jnsv.61.471.↑
Feng J, Cerniglia CE, Chen H. Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, AR , USA. Front Biosci (Elite Ed). 2012 Jan 1;4:568-86. ↑
Kanarek RB. Department of Psychology, Tufts University, Medford, Massachusetts, USA. Nutr Rev. 2011 Jul;69(7):385-91. ↑
Nigg JT, Lewis K, Edinger T, Falk M. Oregon Health and Science University, Portland, OR, USA. J Am Acad Child Adolesc Psychiatry. 2012 Jan;51(1):86-97.e8.↑
McCann D, Barrett A, Cooper A, Crumpler D, Dalen L, Grimshaw K, Kitchin E, Lok K, Porteous L, Prince E, Sonuga-Barke E, Warner JO, Stevenson J. School of Psychology, Department of Child Health, University of Southampton, Southampton, UK. Lancet. 2007 Nov 3;370(9598):1560-7.↑
Gao Y, Li C, Shen J, Yin H, An X, Jin H. Scientific and Technological College of Chemistry and Biology, Yantai Univ., Yantai, PR China. J Food Sci. 2011 Aug;76(6):T125-9.↑