Syntech Vitamin D3
/// PRODUCT DESCRIPTION
Vitamin D is often called the “sunshine vitamin”, because the body produces Vitamin D naturally when the skin is directly exposed to sunlight. An estimated 50% of the people worldwide is affected by Vitamin D insufficiency, and it’s common across all ethnicities and age groups.⁽¹⁾ Different factors determine if a person has a Vitamin D deficiency. Examples are: the season of the year, lifestyle (indoor or outdoor activities), latitude and/or location where one lives, skin colour, age, sunscreen use etc. Very few foods contain Vitamin D and therefore supplementation can be recommended.
The general advantages of Vitamin D:
- Contributes to optimal bone health⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾⁽⁶⁾
- Contributes to the immune system⁽⁷⁾⁽⁸⁾
- Contributes to the maintenance of normal teeth⁽⁹⁾
- Good for your general health⁽¹⁰⁾⁽¹¹⁾
The advantages of Vitamin D for athletes:
- Contributes to the muscle function and muscle strength⁽¹²⁾⁽¹³⁾⁽¹⁴⁾⁽¹⁵⁾⁽¹⁶⁾
- Increases the size and number of Type II (fast twitch) muscle fibers⁽¹⁷⁾
- May improve athletic performance⁽¹⁷⁾⁽¹⁸⁾
- Reduces the risk of stress fractures⁽¹⁹⁾⁽²⁰⁾
- Reduces the risk of inflammation⁽²¹⁾⁽²²⁾
- Reduces respiratory problems in athletes⁽²³⁾⁽²⁴⁾
Suited for:
Persons who are not getting enough sun outside
Men and women looking to support their general health
All age groups
During the winter months: persons and all types of athletes living above 35° parallel north (Europe, North America, Russia)
All indoor athletes to supplement their nutrition plan
Fitness and Body Building
Martial Arts / MMA / Boxing
Athletics
Rugby / Soccer
Cycling
Marathon / Triathlon
/// RECOMMENDED USE
Take 3 minitabs (= 1 serving) per day with a meal, every day of the week.
/// ACTIVE INGREDIENTS PER SERVING (3 MINITABLETS)
Vitamin D3
Vitamin D is often called the “sunshine vitamin”, because the body produces Vitamin D naturally when the skin is directly exposed to sunlight. The sun’s ultraviolet B rays are absorbed by the cholesterol in the skin, which will rapidly convert to vitamin D3 (cholecalciferol). Vitamin D3 is then transported to the liver and converted into calcifediol (25(OH)D). The 25(OH)D serum levels in the blood are measured to determine a person’s vitamin D status. Each serving contains 3000 IU / 75µg.
/// TYPICAL NUTRITIONAL VALUE
Ingredients | Per 3 tabs |
Vitamin D3 | 75µg (3000 IU) |
/// INGREDIENTS
Filler (Microcrystalline Cellulose), Cholecalciferol (Vitamin D3), Lubricant Agent (Magnesium Stearate), Anti-Caking Agent (Silicon Dioxide)
/// SCIENTIFIC REFERENCES
Rathish Nair, Arun Maseeh. Vitamin D: The “sunshine” vitamin. J Pharmacol Pharmacother. 2012 Apr-Jun; 3(2): 118–126.
European Food Safety Authority. Vitamin D contributes to the maintenance of normal bones. EFSA Journal 2009;7(9):1227 and 2009;7(9):1272.
European Food Safety Authority. Vitamin D contributes to normal absorption of calcium and phosphorus. EFSA Journal 2009;7(9):1227 and 2011;9(6):2203.
Jennings A et al. A Mediterranean-like dietary pattern with vitamin D3 (10 µg/d) supplements reduced the rate of bone loss in older Europeans with osteoporosis at baseline: results of a 1-y randomized controlled trial. Am J Clin Nutr. 2018 Sep 1;108(3):633-640.
European Food Safety Authority. Vitamin D contributes to normal blood calcium EFSA Journal 2009;7(9):1227 and 2011;9(6):2203.
Weaver CM et al. Calcium plus vitamin D supplementation and risk of fractures: an updated meta-analysis from the National Osteoporosis Foundation. Osteoporos Int. 2016 Jan;27(1):367-76.
Battault S et al. Vitamin D metabolism, functions and needs: from science to health claims. Eur J Nutr. 2013 Mar;52(2):429-41.
European Food Safety Authority. Vitamin D contributes to the normal function of the immune system. EFSA Journal 2010; 8(2):1468.
European Food Safety Authority. Vitamin D contributes to the maintenance of normal teeth. EFSA Journal 2009;7(9):1227.
Hossein-nezhad A, Holick MF. Vitamin D for health: a global perspective. Mayo Clin Proc. 2013 Jul;88(7):720-55.
European Food Safety Authority. Vitamin D has a role in cell division. EFSA Journal 2009;7(9):1227.
European Food Safety Authority. Vitamin D contributes to the maintenance of normal muscle function. EFSA Journal 2010; 8(2):1468.
Chiang CM et al. Effects of Vitamin D Supplementation on Muscle Strength in Athletes: A Systematic Review. J Strength Cond Res. 2017 Feb;31(2):566-574.
Wyon MA et al. The influence of winter vitamin D supplementation on muscle function and injury occurence in elite ballet dancers: a control study. J Sci Med Sport. 2014 Jan;17(1):8-12.
Hamilton B et al. VitaminD deficiency is endemic in Middle Eastern Public Health Nutr. 2010 Oct;13(10):1528-34.
Close GL et al. Assessment of vitamin D concentration in non-supplemented professional athletes and healthy adults during winter months in the UK: implications for skeletal muscle function. J Sports Sci. 2013;31(4):344-53.
Cannell JJ et al. Athletic performance and vitamin D. Med Sci Sports Exerc. 2009 May;41(5):1102-10.
Ceglia L. Vitamin D and its role in skeletal muscle. Curr Opin Clin Nutr Metab Care. 2009 Nov;12(6):628-33.
Larson-Meyer DE, Willis KS. Vitamin D and athletes. Curr Sports Med Rep. 2010 Jul-Aug;9(4):220-6.
Larson-Meyer DE. The importance of Vitamin D for Athletes. Sports Science Exchange. 2015. Vol. 28, No. 148, 1-6.
Barker T et al. Vitamin D sufficiency associates with an increase in anti-inflammatory cytokines after intense exercise in humans. Cytokine. 2014 Feb;65(2):134-7.
Willis KS et al. Vitamin D status and biomarkers of inflammation in runners. J Sports Med. 2012 Apr 27;3:35-42.
Jung HC et al. Vitamin D₃ Supplementation Reduces the Symptoms of Upper Respiratory Tract Infection during Winter Training in Vitamin D-Insufficient Taekwondo Athletes: A Randomized Controlled Trial. Int J Environ Res Public Health. 2018 Sep 14;15(9).
Martineau AR et al. Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data. BMJ. 2017 Feb 15;356:i6583.
