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Optimize Levels of The Sunshine Vitamin…
Maintaining optimal circulating vitamin D levels in the body is a challenge for many people - especially in the cooler months and winter. This is because your body needs sunlight to make vitamin D.
TrueD3™ can be used to help you maintain optimal levels of vitamin D3. Each capsule provides 1,000 IU of vitamin D3 that is sourced from Switzerland.
The D3 form of vitamin D is preferred as a supplement because it has been shown to be about 300% better at raising vitamin D levels, and is the form of vitamin D your body uses the most.
Other research has found that supplementing with vitamin D2, appears to decrease vitamin D3 levels in the body.
For many years, vitamin D has been associated with good bone health, now we know it plays many roles in the body. Maintaining optimal vitamin D levels is important for heart health, joint health, blood sugar health, immune health, brain health and more.
In fact, emerging research also suggests that individuals who maintain higher levels of vitamin D in their body may age more slowly than people with low levels.
Dietary Supplement / 90 Capsules
Serving Size: 1 Capsule
Servings per Container: 90
|Amount Per Serving||% Daily Value|
|Vitamin D3 (as cholecalciferol)||1,000 IU||250%|
Other ingredients: Rice flour and hypromellose.
Suggested Use: Take one (1) capsule daily with water or as directed by a health care professional.
TrueD3™ helps support healthy vitamin D3 levels.†
Keep out of reach of children.
Store at 15-30° C (59-86° F).
Protect from heat, light and moisture
Do not purchase if seal is broken.
†These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
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Houston DK, Tooze JA, Demons JL, Davis BL, Shertzer-Skinner R, Kearsley LB, Kritchevsky SB, Williamson JD. “Delivery of a Vitamin D Intervention in Homebound Older Adults Using a Meals-on-Wheels Program: A Pilot Study.” Journal of the American Geriatrics Society. 2015 Sep;63(9):1861-7.
Wieczorek K, Braczkowski RS, Skrzypek M, Stryjewski PJ, Kuczaj A, Al-Srory G. “The comparison between vitamin d concentration in upper silesia patients with prostate cancer and with benign prostatic hyperplasia.” J Biol Regul Homeost Agents. 2015 Jan-Mar;29(1):207-11.
de Groot JC, van Roon EN, Storm H, Veeger NJ, Zwinderman AH, Hiemstra PS, Bel EH, ten Brinke A. “Vitamin D reduces eosinophilic airway inflammation in nonatopic asthma.” Journal of Allergy and Clinical Immunology. 2015 Mar;135(3):670-5.e3.
Jia F, Wang B, Shan L, Xu Z, Staal WG, Du L. “Core symptoms of autism improved after vitamin D supplementation.” Pediatrics. 2015 Jan;135(1):e196-8.
Yalçinkaya S, Eren E2, Eroglu M1, Aydin O3, Yilmaz N3. “Deficiency of vitamin D and elevated aldosterone in prostate hyperplasia.” Advances in Clinical and Experimental Medicine. 2014 May-Jun;23(3):441-6.
Gaffney-Stomberg E, Lutz LJ, Rood JC, Cable SJ, Pasiakos SM, Young AJ, McClung JP. “Calcium and vitamin D supplementation maintains parathyroid hormone and improves bone density during initial military training: a randomized, double-blind, placebo controlled trial.” Bone. 2014 Nov;68:46-56.
Hong Q, Xu J, Xu S, Lian L, Zhang M, Ding C. “Associations between serum 25-hydroxyvitamin D and disease activity, inflammatory cytokines and bone loss in patients with rheumatoid arthritis.” Rheumatology (Oxford). 2014 Nov;53(11):1994-2001.
Ford JA, MacLennan GS, Avenell A, Bolland M, Grey A, Witham M. “Cardiovascular disease and vitamin D supplementation: trial analysis, systematic review, and meta-analysis.” The American Journal of Clinical Nutrition. 2014 Sep;100(3):746-55.
Mager DR, Jackson ST, Hoffmann MR, Jindal K, Senior PA. "Vitamin D supplementation and bone health in adults with diabetic nephropathy: the protocol for a randomized controlled trial". BMC Endocr Disord. 2014 Aug 12;14:66.
Khaw KT, Luben R, Wareham N. “Serum 25-hydroxyvitamin D, mortality, and incident cardiovascular disease, respiratory disease, cancers, and fractures: a 13-y prospective population study.” The American Journal of Clinical Nutrition. 2014 Nov;100(5):1361-70.
Chei CL, Raman P, Yin ZX, Shi XM, Zeng Y, Matchar DB. “Vitamin D levels and cognition in elderly adults in China.” Journal of the American Geriatrics Society. 2014 Nov;62(11):2125-9.
Camargo CA Jr, Ganmaa D, Sidbury R, Erdenedelger Kh, Radnaakhand N, Khandsuren B. “Randomized trial of vitamin D supplementation for winter-related atopic dermatitis in children.” Journal of Allergy and Clinical Immunology. 2014 Oct;134(4):831-835.e1.
Liu G, Lu L, Sun Q, Ye X, Sun L, Liu X, Zong G, Jin Q, Li H, Lin X. “Poor vitamin D status is prospectively associated with greater muscle mass loss in middle-aged and elderly Chinese individuals.” Journal of the Academy of Nutrition and Dietetics. 2014 Oct;114(10):1544-1551.
Shab-Bidar S, Bours S, Geusens PP, Kessels AG, van den Bergh JP. “Serum 25(OH)D response to vitamin D3 supplementation: a meta-regression analysis.” Nutrition. 2014 Sep;30(9):975-85.
Chen RH, Jiang XZ, Jiang Q, Gu Z, Gu PL, Zhou B, Zhu ZH, Xu LY, Zou YF. “Correlations between serum levels of 25-hydroxyvitamin D and carotid atherosclerosis in patients with type 2 diabetes in Shanghai.” Annales d'Endocrinologie. 2014 Sep;75(4):206-12.
Dalbeni A, Scaturro G, Degan M, Minuz P, Delva P. “Effects of six months of vitamin D supplementation in patients with heart failure: a randomized double-blind controlled trial.” Nutrition, Metabolism and Cardiovascular Diseases. 2014 Aug;24(8):861-8.
Verdoia M, Schaffer A, Sartori C, Barbieri L, Cassetti E, Marino P, Galasso G, De Luca G. “Vitamin D deficiency is independently associated with the extent of coronary artery disease.” European Journal of Clinical Investigation. 2014 Jul;44(7):634-42.
Zhao J, Dong J, Wang H, Shang H, Zhang D, Liao L. “Efficacy and safety of vitamin D3 in patients with diabetic nephropathy: a meta-analysis of randomized controlled trials.” Chinese Medical Journal. 2014;127(15):2837-43.
Bischoff-Ferrari HA. “Optimal serum 25-hydroxyvitamin D levels for multiple health outcomes.” Advances in Experimental Medicine and Biology. 2014, 810:500-525.
Curtis EM, Moon RJ, Dennison EM, Harvey NC. “Prenatal calcium and vitamin D intake, and bone mass in later life.” Current Osteoporosis Reports. 2014 Jun;12(2):194-204.
Shuler FD, Schlierf T, Wingate M. Preventing falls with vitamin D. West Virginia State Medical Association. 2014 May-Jun;110(3):10-2.
Ohta H, Uemura Y, Nakamura T, Fukunaga M, Ohashi Y, Hosoi T, Mori S, Sugimoto T, Itoi E, Orimo H, Shiraki M. “Adequate Serum 25-hydroxyvitamin D level as an independent determinant of quality of life in osteoporosis with a high risk for fracture.”Clinical Therapeutics. 2014 Feb 1;36(2):225-35.
Chlebowski RT, Pettinger M, Johnson KC, Wallace R, Womack C, Mossavar-Rahmani Y, Stefanick M, Wactawski-Wende J, Carbone L, Lu B, Eaton C, Walitt B, Kooperberg CL. “Calcium plus vitamin D supplementation and joint symptoms in postmenopausal women in the women's health initiative randomized trial.” Journal of the Academy of Nutrition and Dietetics. 2013 Oct;113(10):1302-10.
Macdonald, H. M., Wood, A. D., Aucott, L. S., Black, A. J., Fraser, W. D., Mavroeidi, A., Reid, D. M., Secombes, K. R., Simpson, W. G. and Thies, F., “Hip bone loss is attenuated with 1000 IU but not 400 IU daily vitamin D3: A 1-year double-blind RCT in postmenopausal women.” 2013 J Bone Miner Res, 28: 2202–2213
Hermann, W, Kirsch SH, Kruse V, Eckert R, Gräber S, Geisel J, Obeid R. “One year B and D vitamins supplementation improves metabolic bone markers.” Clin Chem Lab Med. 2013 Mar 1;51(3):639-47.
McAlindon T, et al. “Effect of vitamin D supplementation on progression of knee pain and cartilage volume loss in patients with symptomatic osteoarthritis: a randomized controlled trial.” The Journal of the American Medical Association. 2013 Jan 9;309(2):155-62.
Espinosa G, Esposito R, Kazzazi A, Djavan B. “Vitamin D and benign prostatic hyperplasia -- a review.” The Canadian Journal of Urology. 2013 Aug;20(4):6820-5.
Zheng Y, Zhu J, Zhou M, Cui L, Yao W, Liu Y. “Meta-analysis of long-term vitamin D supplementation on overall mortality.” PLoS One. 2013 Dec 3;8(12):e82109.
Ceglia L, Niramitmahapanya S, da Silva Morais M, Rivas DA, Harris SS, Bischoff-Ferrari H, Fielding RA, Dawson-Hughes B. “A randomized study on the effect of vitamin D? supplementation on skeletal muscle morphology and vitamin D receptor concentration in older women.” The Journal of Clinical Endocrinology and Metabolism. 2013 Dec;98(12):E1927-35.
Schroten NF, Ruifrok WP, Kleijn L, Dokter MM, Silljé HH, Lambers Heerspink HJ, Bakker SJ, Kema IP, van Gilst WH, van Veldhuisen DJ, Hillege HL, de Boer RA. “Short-term vitamin D3 supplementation lowers plasma renin activity in patients with stable chronic heart failure: an open-label, blinded end point, randomized prospective trial (VitD-CHF trial).” American Heart Journal. 2013 Aug;166(2):357-364.e2.
Haghsheno MA, Mellström D, Behre CJ, Damber JE, Johansson H, Karlsson M, Lorentzon M, Peeker R, Barret-Connor E, Waern E, Sundh V, Ohlsson C, Hammarsten J. “Low 25-OH vitamin D is associated with benign prostatic hyperplasia.” The Journal of Urology. 2013 Aug;190(2):608-14.
Glover TL1, et al. “Vitamin D, race, and experimental pain sensitivity in older adults with knee osteoarthritis.” Arthritis & Rheumatology. 2012 Dec;64(12):3926-35.
van Amerongen BM, Feron F. “Effect of high-dose vitamin D3 intake on ambulation, muscular pain and bone mineral density in a woman with multiple sclerosis: a 10-year longitudinal case report.” International Journal of Molecular Sciences. 2012 Oct 19;13(10):13461-83.
Tripkovic L, Lambert H, Hart K, Smith CP, Bucca G, Penson S, Chope G, Hyppönen E, Berry J, Vieth R, Lanham-New S. “Comparison of vitamin D2 and vitamin D3 supplementation in raising serum 25-hydroxyvitamin D status: a systematic review and meta-analysis.” The American Journal of Clinical Nutrition. 2012 Jun;95(6):1357-64.
Lauretani F, Frondini C, Davoli ML, Martini E, Pellicciotti F, Zagatti A, Giordano A, Zurlo A, Pioli G. “Vitamin D supplementation is required to normalize serum level of 25OH-vitamin D in older adults: an observational study of 974 hip fracture inpatients.” J Endocrinol Invest. 2012 Nov;35(10):921-4.
Bischoff-Ferrari, H.A., Willett, W.C., Orav, E.J., Lips, P., Meunier, P.J., Lyons, R.A. et al, “A pooled analysis of vitamin D dose requirements for fracture prevention.” N Engl J Med. Jul 5 2012;367:40–49.
Gallagher JC, Sai A, Templin T 2nd, Smith L. “Dose response to vitamin D supplementation in postmenopausal women: a randomized trial.” Ann Intern Med. 2012 Mar 20;156(6):425-37
Nazarian S, St Peter JV, Boston RC, Jones SA, Mariash CN. “Vitamin D3 supplementation improves insulin sensitivity in subjects with impaired fasting glucose.” Translational Research. 2011 Nov;158(5):276-81.
Choi HS, Kim KA, Lim CY, Rhee SY, Hwang YC, Kim KM, Kim KJ, Rhee Y, Lim SK. “Low serum vitamin D is associated with high risk of diabetes in Korean adults.” Journal of Nutrition. 2011 Aug;141(8):1524-8.
Gilbert R, Metcalfe C, Oliver SE, Whiteman DC, Bain C, Ness A, et al. Life course sun exposure and risk of prostate cancer: population-based nested case-control study and meta-analysis. Int J Cancer. 2009;125:1414–23.
Bischoff-Ferrari HA, Dawson-Hughes B, Staehelin HB, Orav JE, Stuck AE, Theiler R, Wong JB, Egli A, Kiel DP, Henschkowski J. “Fall prevention with supplemental and active forms of vitamin D: a meta-analysis of randomised controlled trials.” BMJ. 2009 Oct 1;339:b3692.
Dobnig H, Pilz S, Scharnagl H, Renner W, Seelhorst U, Wellnitz B, Kinkeldei J, Boehm BO, Weihrauch G, Maerz W. “Independent association of low serum 25-hydroxyvitamin d and 1,25-dihydroxyvitamin d levels with all-cause and cardiovascular mortality.” Archives of Internal Medicine. 2008 Jun 23;168(12):1340-9.
Tang BM, Eslick GD, Nowson C, Smith C, Bensoussan A. “Use of calcium or calcium in combination with vitamin D supplementation to prevent fractures and bone loss in people aged 50 years and older: a meta-analysis.” Lancet. 2007 Aug 25;370(9588):657-66.
Boonen S, Lips P, Bouillon R, Bischoff -Ferrari HA, Vanderschueren D, Haentjens P. “Need for additional calcium to reduce the risk of hip fracture with vitamin D supplementation: evidence from a comparative meta-analysis of randomized controlled trials.” J Clin Ednocrinol Metab 2007; 92: 1415–23.
Broe KE, Chen TC, Weinberg J, Bischoff-Ferrari HA, Holick MF, Kiel DP. “A higher dose of vitamin d reduces the risk of falls in nursing home residents: a randomized, multiple-dose study.” Journal of the American Geriatrics Society. 2007 Feb;55(2):234-9.
Gorham ED, Garland CF, Garland FC, Grant WB, Mohr SB, Lipkin M, Newmark HL, Giovannucci E, Wei M, Holick MF. “Optimal vitamin D status for colorectal cancer prevention: a quantitative meta analysis.” American Journal of Preventive Medicine. 2007 Mar;32(3):210-6.
Bischoff -Ferrari HA. “How to select the doses of vitamin D in the management of osteoporosis.” Osteoporos International 2007;18: 401–07.
Jackson RD, LaCroix AZ, Gass M, et al. “Calcium plus vitamin D supplementation and the risk of fractures.” New England Journal of Medicine 2006; 354: 669–83.
Ruohola JP, et al. “Association between serum 25(OH)D concentrations and bone stress fractures in Finnish young men.” Journal of Bone and Mineral Research. 2006 Sep;21(9):1483-8.
Garland CF, Garland FC, Gorham ED, Lipkin M, Newmark H, Mohr SB, Holick MF. “The role of vitamin D in cancer prevention.” American Journal of Public Health. 2006 Feb;96(2):252-61.
The RECORD Trial Group. “Oral vitamin D3 and calcium for secondary prevention of low-trauma fractures in elderly people (Randomised Evaluation of Calcium Or vitamin D, RECORD): a randomised placebo-controlled trial.” Lancet 2005; 365: 1621–28.
Bischoff -Ferrari HA, Willett WC, Wong JB, Giovannucci E, Dietrich T, Dawson-Hughes B. “Fracture prevention with vitamin D supplementation: a meta-analysis of randomized controlled trials.” JAMA 2005; 293: 2257–64.
Porthouse J, Cockayne S, King C, et al. “Randomised controlled trial of supplementation with calcium and cholecalciferol (vitamin D3) for prevention of fractures in primary care.” BMJ 2005; 330: 1003–06.
Avenell A, Gillespie W, Gillespie L, O’Connell D. “Vitamin D and vitamin D analogues for preventing fractures associated with involutional and post-menopausal osteoporosis.” Cochrane Database Syst Rev 2005; 3: CD000227
Larsen E, Mosekilde L, Foldspang A. “Vitamin D and calcium supplementation prevents osteoporotic fractures in elderly community dwelling residents: a pragmatic population-based 3-year intervention study.” J Bone Miner Res 2004; 19: 370–78.
Armas LA, Hollis BW, Heaney RP. “Vitamin D2 is much less effective than vitamin D3 in humans.” The Journal of Clinical Endocrinology and Metabolism. 2004 Nov;89(11):5387-91.
Bischoff-Ferrari HA, et al. “Effect of Vitamin D on falls: a meta-analysis.” The Journal of the American Medical Association. 2004 Apr 28;291(16):1999-2006.
Tuohimaa P, Tenkanen L, Ahonen M, Lumme S, Jellum E, Hallmans G, et al. Both high and low levels of blood vitamin D are associated with a higher prostate cancer risk: a longitudinal, nested case-control study in the Nordic countries. Int J Cancer. 2004;108:104–8.
Meier C, Woitge H, Witte K, Lemmer B, Seibel M. “Supplementation with oral vitamin D3 and calcium during winter prevents seasonal bone loss: a randomized controlled open-label prospective trial.” J Bone Miner Res 2004; 19: 1221–30.
Chapuy M, Pamphile R, Paris E, et al. “Combined calcium and vitamin D3 supplementation in elderly women: confi rmation of reversal of secondary hyperparathyroidism and hip fracture risk: the Decalyos II study.” Osteoporos Int 2002; 13: 257–64.
Ahonen M, Tenkanen L, Teppo L, Hakama M, Tuohimaa P. “Prostate cancer risk and prediagnostic serum 25-hydroxyvitamin D levels (Finland).” Cancer Causes & Control. November 2000, Volume 11, Issue 9, pp 847-852.
Baeksgaard L, Andersen K, Hyldstrup L. “Calcium and vitamin D supplementation increases spinal BMD in healthy, postmenopausal women.” Osteoporos Int 1998; 8: 255–60.
Trang HM, Cole DE, Rubin LA, Pierratos A, Siu S, Vieth R. “Evidence that vitamin D3 increases serum 25-hydroxyvitamin D more efficiently than does vitamin D2.” 1998 Oct;68(4):854-8.
Dawson-Hughes B, Harris SS, Krall EA, Dallal GE. “Effect of calcium and vitamin D supplementation on bone density in men and women 65 years of age or older.” N Engl J Med 1997; 337: 670–76.
McAlindon TE, et al. “Relation of dietary intake and serum levels of vitamin D to progression of osteoarthritis of the knee among participants in the Framingham Study.” Annals of Internal Medicine. 1996 Sep 1;125(5):353-9.
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