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Microcore™

High Performance Multivitamin

4.9
Rated 4.9 out of 5 stars
197 Reviews
$29.99

The key vitamins and minerals hard-training lifters need

Clinically dosed in the most bio-available forms

Supports energy, recovery, strength, immunity, and more

Pharmaceutical-grade quality, cGMP/NSF certified

3 Month 100% Satisfaction Guarantee

If you’re not satisfied with your purchase, we’ll refund you with no return required.

Microcore™

$29.99

The Essential Nutrients Hard Training Lifters Need

Filling the gaps that hold your performance back.

Why Microcore™?

Microcore is a science-based vitamin/mineral complex providing the key micronutrients hard-training lifters need for optimal health and performance. Rather than delivering an endless list of cheap, under-dosed and often unnecessary ingredients like most traditional multis do, Microcore focuses on the highest quality forms and proper doses of only the select vitamins and minerals you truly require.

Ingredients & Benefits

Vitamin D3 → Supports immunity, strength, mood, and testosterone production.
Magnesium → Improves recovery, sleep quality, and energy levels.
Zinc Citrate → Optimizes immune function and metabolic performance.
B-Complex → Boosts energy production and cognitive function.
Vitamin K1 & K2 → Strengthens cardiovascular and bone health.

In short: The exact micronutrients hard-training lifters need for optimal performance and health. Dosed correctly, absorbed efficiently, nothing unnecessary.

Science & Quality

Every ingredient in Microcore is included at proper clinical dosages backed by research. We use only pharmaceutical-grade, highly bioavailable forms that your body can absorb efficiently – not the cheap alternatives most multis use to cut costs.

Manufactured in a cGMP and NSF certified facility, the gold standard for supplement production. No proprietary blends. No under-dosing. No useless fillers.

How To Consume

WARNING

Not intended for persons under the age of 18. Consult a physician prior to consumption if you have any existing medical conditions and/or are taking any prescription medications. Do not use if pregnant or nursing. Immediately discontinue use and consult a health care professional if you experience any adverse side effects.  Do not exceed recommended serving. Discontinue use 2 weeks prior to surgery. Do not use if safety seal is broken or missing. Store in a cool, dry place.

KEEP OUT OF REACH OF CHILDREN.

*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.

from 403 reviews
    4.9/5.0

4.9/5 with 194 reviews

Effective Micronutrition That Matches Your Training

1 (1).jpg__PID:4e8f5174-1bcd-48d4-969e-586bfe061135

Fills the micronutrient gaps left by hard training, without the useless fillers

Proper clinical dosages – not tiny amounts designed to look impressive on a label

Bio-available forms your body can absorb instead of cheap compounds that get flushed out

Targets what lifters actually need instead of a bloated formula with 40+ random ingredients

Optimizes energy levels, recovery, testosterone, sleep and immunity

Key Ingredients

Clinically effective dosages

Most bio-available forms

Targets lifter-specific needs

No unnecessary fillers

No harmful mega-doses

Ingredient quantities based on 1 serving of Microcore, 2-4 tablets:

Vitamin D3

1500-3000IU

Supports immunity, mood, testosterone production, and muscular strength. Most people are deficient without direct sun exposure. Hard to get enough from food alone.

Vitamin D3 - 1500-3000IU (1).png__PID:5bf6b66f-202e-42ea-8c8f-f302357c7d77

Magnesium Citrate

200-400mg

Improves recovery, sleep quality and energy levels. Depleted through sweat during intense training. We use the bioavailable citrate form, not the cheap oxide form most multis include.

Magnesium Citrate (1).png__PID:35eb9abf-7697-41d1-9dc2-6158d1a7bf42

Zinc Citrate

15-30mg

Optimizes hormone levels, strengthens immune function and supports hundreds of key metabolic processes. Lifters are at higher risk for zinc deficiency.

Zinc Citrate (1).png__PID:3e35eb9a-bf76-4721-91dd-c26158d1a7bf

Vitamin B Complex

See Label For Dosages

Converts food into usable energy, supports cellular repair, and boosts cognitive function. Training increases B vitamin requirements.

Vitamin B Complex (1).png__PID:67243e35-eb9a-4f76-9721-d1ddc26158d1

Vitamin K

K1: 250-500mcg 

K2: 90-180mcg 

Supports cardiovascular health, bone strength, and insulin sensitivity. Higher doses provide benefits beyond basic RDA. Difficult to get optimal amounts from diet.

Vitamin K (1).png__PID:243e35eb-9abf-4697-a1d1-ddc26158d1a7

What A Proper Multivitamin Looks Like

The key vitamins and minerals hard-training lifters need, delivered in their proper clinical dosages and highest quality forms.

Microcore_Comparison_Compressed.jpg__PID:82912f61-e1fb-4cb4-ba1f-81d74dca8ab1

VS

comparison.png__PID:66ebc609-baab-4728-8b46-53a224539f8d

Full clinical dosages

Under-dosed token amounts

Pharmaceutical-grade bio-available forms

Cheap, poorly absorbed forms

Only the vitamins and minerals lifters need

Bloated formulas with 40+ unnecessary ingredients

Excludes potentially harmful mega-doses of A, C, E

Over-supplies antioxidants linked to negative health effects

Made in cGMP/NSF certified facility

Unknown or low-quality manufacturing standards

Verified Customer Reviews

4.9
Rated 4.9 out of 5 stars
Based on 197 reviews
Total 5 star reviews: 183 Total 4 star reviews: 12 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 1
197 reviews
  • Matthew B.
    Verified Buyer
    Rated 5 out of 5 stars
    2 weeks ago
    Supporting my lifting

    Have just completed a 20 week cycle of hard lifting and the support provided by MicroCore, keeping my essential vitamin levels peaked, has been the key to keeping me going. I'm over 50, so being able to maintain the intensity of my workouts while recovering quickly afterwards has never been so consistent and this product is really the only variable I've added.

    Great product, worth every cent, even with the cost to ship to Australia. Highly recommended!

  • John J. R.
    Verified Buyer
    Rated 5 out of 5 stars
    1 month ago
    Boost of energy.

    Over the last couple of weeks I've noticed a change in my energy. I pair this with 03 Prime and something just feels more aligned in my mind in body. Definitely recommending this.

  • Juan
    Rated 5 out of 5 stars
    1 month ago
    5 Stars

    Love it.

  • Juan K.
    Verified Buyer
    Rated 5 out of 5 stars
    2 months ago
    Great stuff

    Exactly what I want!

  • Craig S.
    Verified Buyer
    Rated 5 out of 5 stars
    2 months ago
    What I need and Nothing Else

    This is a great product. Simple, effective and gets what I need in my system daily that I typically miss with my diet.

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3 Month 100% Satisfaction Guarantee

Your results come first. If you're not satisfied with a RealScience Athletics supplement, we'll refund your purchase with no return required. You can keep the product and we part as friends. Read more here.

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Microscope icon, a white line drawing symbolizing scientific research, used to represent full clinical dosages, sleek modern style, precision instrument depiction for pharmaceutical

Research
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Ingredients

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Full
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Dosages

Frequently Asked Questions

I’ve heard from many sources that multivitamins are unnecessary. What gives?

If we’re talking about most “traditional” multis that include a laundry-list of every single vitamin and mineral available randomly mashed together into a single formula, then we completely agree that these are unnecessary.

As long as you’re eating a half-decent diet with reasonable food variety throughout the day, a good portion of your micronutrient needs are already being met, making additional supplementation unnecessary.

That said, there are several micronutrients that are much more difficult to consume in optimal amounts from regular whole food and/or whose requirements are increased as a result of intense physical exercise.

For example, magnesium and zinc are drained from the body through sweat.

Vitamin D is primarily obtained through direct sunlight, which most people don’t get enough of.

Vitamin K2 is only found in high amounts in fermented soy.

This is where Microcore places its focus by providing only the select few vitamins and minerals you truly need, in their proper clinical doses and most bio-available forms.

What specific effects will I feel by taking Microcore?

Some benefits of Microcore can be directly “felt”, while others provide overall long-term health benefits that work more “beneath the hood” and won’t be quite as obvious.

Examples of benefits that you may directly feel include improvements in mood and well-being, increased energy, mental clarity, better sleep and improved libido.

Just how strongly these effects are experienced largely depends on your individual micronutrient levels prior to supplementation. If a particular vitamin or mineral in Microcore helps to correct a significant deficiency you may have had, the benefits will be more noticeable.

Examples of health benefits that you won’t necessarily “feel” but may experience symptoms of longer term include stronger immune function, heart health, bone health, hormone production and insulin sensitivity.

Some of the dosages are quite a bit higher than the standard RDA. Why is that?

While the RDA can provide a useful guideline for the maintenance of basic overall health, going above the RDA in certain cases (while still remaining within safe limits) can produce additional dose-dependent benefits that the RDA alone won’t provide.

A good example of this is Vitamin K. Although 75mcg daily is sufficient to prevent a deficiency, going significantly higher than this (Microcore contains up to 680mcg per serving) directly improves bone strength and cardiovascular health while still staying well within the known safe limit of 45,000mcg.

Some RDA’s are also currently set at levels that are likely too low for optimal health.

For example, the current RDA for Vitamin D is only 600IU, while many experts who specialize in Vitamin D research agree that 1500-2000IU is the more appropriate minimum figure.

In addition, hard-training lifters and athletes often have higher micronutrient requirements than the average person since certain vitamins and minerals (for example, magnesium, zinc and b vitamins) are drained from the body as a result of intense exercise.

Don’t several of the vitamins/minerals compete for absorption when taken at the same time?

Although zinc and magnesium technically do utilize the same transporter, they only “compete” for absorption at higher combined intakes of 800mg or more.

The highest dose of Microcore (4 tablets daily) provides 400mg of magnesium and 30mg of zinc, well below the 800mg limit.

I already eat a healthy diet with plenty of variety. Will Microcore benefit me?

Microcore has been formulated to provide the specific vitamins and minerals that are the most difficult to obtain in optimal amounts from regular whole food and that hard-training lifters require the most.

For example, vitamin D is only found in whole foods in very small amounts and must either be obtained through direct sunlight or in supplemental form.

Vitamin K2 would be another example. Unless you regularly eat an uncommon food source known as “natto” (fermented soy), additional supplementation can provide dose-dependent benefits.

While Microcore will certainly provide the greatest benefit to those with a less micronutrient rich diet, even those who are already eating quite “healthy” can still use it to ensure that all of their vitamin/mineral levels are fully optimized.

Why is there no vitamin A, vitamin C or vitamin E included?

Most people eating a typical Western diet already meet their requirements for these vitamins quite easily.

Vitamin A, C and E are not only unnecessary from a cost perspective in most cases, but some evidence even suggests that there may be negative health effects associated with high dose supplementation of these antioxidants over the long term. [1-7]

So, unless you have a specific reason for consuming additional vitamin A, C or E, including them in a multivitamin is at best a waste of money and at worst potentially harmful.

Why is there no calcium included?

Daily calcium intakes can vary quite a bit from person to person, primarily depending on whether or not they consume dairy products.

Those who regularly eat foods such as yogurt, milk, cheese or whey protein likely get more than enough calcium from their diet, while those who exclude dairy may benefit from supplementation.

Due to this significant dietary variance, calcium is best supplemented with on an “as needed” basis only if it’s required to help an individual meet the recommended intake of about 1000mg daily.

Several other common minerals seem to be excluded as well. Why?

Although other minerals such as chromium, iodine, phosphorus, selenium, copper, manganese etc. are commonly found in most traditional multis, the average person already obtains enough of them through their regular diet rendering additional supplementation unnecessary and potentially unsafe.

Excessive selenium, for example, can increase the risk of developing type-2 diabetes, while high levels of copper have been associated with the onset and symptoms of Alzheimer’s disease. [8-11]

Just because you should be supplementing with one particular micronutrient doesn’t automatically mean that you should be supplementing with every micronutrient.

Microcore focuses only on the specific vitamins and minerals that hard-training lifters truly require and discards all of the unnecessary extras.

How do I know that Microcore doesn't include any cheap fillers or hidden ingredients like other companies have been found using?

Product safety and control is a top priority, and that’s why we only manufacture our supplements in cGMP/NSF certified USA-based facilities. This is the most widely-respected global third-party certification provider for supplement production.

It costs a bit more on our end to go this route, but guarantees that you’re getting the purest ingredients and highest quality processing available.

What is the best way to supplement with Microcore in terms of dosage and timing?

Microcore should be supplemented with on a daily basis at 2-4 tablets per day. This should ideally be split into two dosages taken in the morning and afternoon with food.

Whether you go with the baseline dosage (2 tablets), medium dosage (3 tablets) or upper dosage (4 tablets) depends on your individual micronutrient needs.

Every person is different and has higher or lower requirements depending on a variety of factors, including:

Body Weight: Heavier individuals carrying more total lean body mass will generally have higher needs than lighter individuals.

Calorie Intake: Eating in a calorie deficit for fat loss would increase the need for micronutrient supplementation in comparison to eating at maintenance or in a surplus.

Activity Level: Those who are more active throughout the week (including weight training, cardio and any other strenuous activities) would likely benefit from a higher dosage.

Dietary Variety: If you tend to eat a smaller variety of foods throughout the day (especially if your fruit/vegetable intake is fairly low) then your vitamin/mineral requirements would increase.

Use a combination of the above factors to decide which specific dosage to follow.

If you’re unsure, just go with the middle-ground dosage of 3 tablets per day.

How large are the tablets?

Don’t worry, these are not massive “horse pills” like you get with many other multivitamin products. Microcore is delivered in a small sized caplet and contains an outer coating to allow for easy swallowing.

Are there any side effects I should know about?

All of the ingredients in Microcore are present in research-supported dosages that have been shown to be safe for both short and long-term use.

However, if you have any pre-existing health conditions or are currently using any prescription medication, you should consult your doctor first before supplementing with Microcore.

Those using the prescription medication Warfarin should avoid Microcore due to interactions with Vitamin K.

Is Microcore gluten‑free? Vegetarian? Vegan?

Yes, yes and yes!

What are your scientific references?

1.Antioxidants prevent health-promoting effects of physical exercise in humans.
Ristow M, Zarse K, Oberbach A, Klöting N, Birringer M, Kiehntopf M, Stumvoll M, Kahn CR, Blüher M. Proc Natl Acad Sci U S A. 2009 May 26;106(21):8665-70.

2.Oral administration of vitamin C decreases muscle mitochondrial biogenesis and hampers training-induced adaptations in endurance performance.
Gomez-Cabrera MC, Domenech E, Romagnoli M, Arduini A, Borras C, Pallardo FV, Sastre J, Viña J. Am J Clin Nutr. 2008 Jan;87(1):142-9.

3.The Effect of Vitamin C and E Supplementation on Muscle Damage and Oxidative Stress in Female Athletes: A Clinical Trial.
Maryam Taghiyar, Leila Darvishi, Gholamrez Askari, Awat Feizi, Mitra Hariri,Nafiseh Shokri Mashhadi, Reza Ghiasvand. Int J Prev Med. 2013 Apr; 4(Suppl 1): S16–S23.

4.Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: systematic review and meta-analysis.
Bjelakovic G, Nikolova D, Gluud LL, Simonetti RG, Gluud C. JAMA. 2007 Feb 28;297(8):842-57.

5.Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases.
Cochrane Database Syst Rev. 2012 Mar 14;(3):CD007176.

6.Antioxidant supplements and mortality.
Bjelakovic G, Nikolova D, Gluud C. Curr Opin Clin Nutr Metab Care. 2014 Jan;17(1):40-4.

7.Antioxidant vitamins supplementation and mortality: a randomized trial in head and neck cancer patients.
Bairati I, Meyer F, Jobin E, Gélinas M, Fortin A, Nabid A, Brochet F, Têtu B. Int J Cancer. 2006 Nov 1;119(9):2221-4.

8.Serum selenium concentrations and diabetes in U.S. adults: National Health and Nutrition Examination Survey (NHANES) 2003-2004.
Laclaustra M, Navas-Acien A, Stranges S, Ordovas JM, Guallar E. Environ Health Perspect. 2009 Sep;117(9):1409-13.

9.Effects of long-term selenium supplementation on the incidence of type 2 diabetes: a randomized trial.
Stranges S, Marshall JR, Natarajan R, Donahue RP, Trevisan M, Combs GF, Cappuccio FP, Ceriello A, Reid ME. Ann Intern Med. 2007 Aug 21;147(4):217-23. Epub 2007 Jul 9.

10.Low-copper diet as a preventive strategy for Alzheimer's disease.
Squitti R, Siotto M, Polimanti R. Neurobiol Aging. 2014 Sep;35 Suppl 2:S40-50

11.Dietary and lifestyle guidelines for the prevention of Alzheimer's disease.
Barnard ND, Bush AI, Ceccarelli A, Cooper J, de Jager CA, Erickson KI, Fraser G, Kesler S, Levin SM, Lucey B, Morris MC, Squitti R. Neurobiol Aging. 2014 Sep;35 Suppl 2:S74-8.

12.Effects of Vitamin D Supplementation on Muscle Strength in Athletes: A Systematic Review.
Chiang CM, Ismaeel A, Griffis RB, Weems S. J Strength Cond Res. 2017 Feb;31(2):566-574.

13.Vitamin D Status and Muscle Function Among Adolescent and Young Swimmers.
Geiker NRW, Larsen R, Hansen M, Jørgensen NR, Jakobsen J, Hansen BS, Kristensen M, Bügel S. Int J Sport Nutr Exerc Metab. 2017 May 30:1-22.

14.Muscular effects of vitamin D in young athletes and non-athletes and in the elderly.
Koundourakis NE, Avgoustinaki PD, Malliaraki N, Margioris AN. Hormones (Athens). 2016 Oct;15(4):471-488.

15.Sports health benefits of vitamin D.
Shuler FD, Wingate MK, Moore GH, Giangarra C. Sports Health. 2012 Nov;4(6):496-501.

16.Compromised Vitamin D Status Negatively Affects Muscular Strength and Power of Collegiate Athletes.
Hildebrand RA, Miller B, Warren A, Hildebrand D, Smith BJ. Int J Sport Nutr Exerc Metab. 2016 Dec;26(6):558-564.

17.Vitamin D supplementation in athletes.
Larson-Meyer E. Nestle Nutr Inst Workshop Ser. 2013;75:109-21.

18.Selected In-Season Nutritional Strategies to Enhance Recovery for Team Sport Athletes: A Practical Overview.
Heaton LE, Davis JK, Rawson ES, Nuccio RP, Witard OC, Stein KW, Baar K, Carter JM, Baker LB. Sports Med. 2017 Jul 12.

19.The impact of 1-year vitamin D supplementation on vitamin D status in athletes: a dose-response study.
Backx EM, Tieland M, Maase K, Kies AK, Mensink M, van Loon LJ, de Groot LC. Eur J Clin Nutr. 2016 Sep;70(9):1009-14. doi: 10.1038/ejcn.2016.133.

20.Vitamin D Deficiency Among Professional Basketball Players.
Fishman MP, Lombardo SJ, Kharrazi FD. Orthop J Sports Med. 2016 Jul 6;4(7):2325967116655742.

21.Vitamin D and Weight Cycling: Impact on Injury, Illness, and Inflammation in Collegiate Wrestlers.
Barcal JN1, Thomas JT, Hollis BW, Austin KJ, Alexander BM, Larson-Meyer DE. Nutrients. 2016 Nov 30;8(12). pii: E775.

22.Vitamin D Status: United States, 2001–2006.
Anne C. Looker, Ph.D.; Clifford L. Johnson, M.P.H.; David A. Lacher, M.D.; Christine M. Pfeiffer, Ph.D.; Rosemary L. Schleicher, Ph.D.; and Christopher T. Sempos, Ph.D.

23.Prevalence and correlates of vitamin D deficiency in US adults.
Forrest KY, Stuhldreher WL. Nutr Res. 2011 Jan;31(1):48-54.

24.Why the IOM recommendations for vitamin D are deficient.
Heaney RP, Holick MF. J Bone Miner Res. 2011 Mar;26(3):455-7.

25.The 2011 report on dietary reference intakes for calcium and vitamin D from the Institute of Medicine: what clinicians need to know.
Ross AC, Manson JE, Abrams SA, Aloia JF, Brannon PM, Clinton SK, Durazo-Arvizu RA, Gallagher JC, Gallo RL, Jones G, Kovacs CS, Mayne ST, Rosen CJ, Shapses SA. J Clin Endocrinol Metab. 2011 Jan;96(1):53-8.

26.Evaluation, treatment, and prevention of vitamin D deficiency: an Endocrine Society clinical practice guideline.
Holick MF1, Binkley NC, Bischoff-Ferrari HA, Gordon CM, Hanley DA, Heaney RP, Murad MH, Weaver CM; Endocrine Society. J Clin Endocrinol Metab. 2011 Jul;96(7):1911-30.

27.Should we be concerned about the vitamin D status of athletes?
Willis KS1, Peterson NJ, Larson-Meyer DE. Int J Sport Nutr Exerc Metab. 2008 Apr;18(2):204-24.

28.Vitamin D supplementation, 25-hydroxyvitamin D concentrations, and safety.
Vieth R. m J Clin Nutr. 1999 May;69(5):842-56.

29.Can Magnesium Enhance Exercise Performance?
Zhang Y, Xun P, Wang R, Mao L, He K. Nutrients. 2017 Aug 28;9(9).

30.Effects of magnesium supplementation on testosterone levels of athletes and sedentary subjects at rest and after exhaustion.
Cinar V, Polat Y, Baltaci AK, Mogulkoc R. Biol Trace Elem Res. 2011 Apr;140(1):18-23.

31.Magnesium and anabolic hormones in older men.
Maggio M, Ceda GP, Lauretani F, Cattabiani C, Avantaggiato E, Morganti S, Ablondi F, Bandinelli S, Dominguez LJ, Barbagallo M, Paolisso G, Semba RD, Ferrucci L. Int J Androl. 2011 Dec;34(6 Pt 2):e594-600.

32.The effect of magnesium supplementation on primary insomnia in elderly: A double-blind placebo-controlled clinical trial.
Abbasi B, Kimiagar M, Sadeghniiat K, Shirazi MM, Hedayati M, Rashidkhani B. J Res Med Sci. 2012 Dec;17(12):1161-9.

33.Magnesium and strength in elite judo athletes according to intracellular water changes.
Matias CN, Santos DA, Monteiro CP, Silva AM, Raposo Mde F, Martins F, Sardinha LB, Bicho M, Laires MJ. Magnes Res. 2010 Sep;23(3):138-41.

34.Magnesium, zinc, and chromium nutrition and athletic performance.
Lukaski HC. Can J Appl Physiol. 2001;26 Suppl:S13-22.

35.Magnesium intake is associated with strength performance in elite basketball, handball and volleyball players.
Santos DA, Matias CN, Monteiro CP, Silva AM, Rocha PM, Minderico CS, Bettencourt Sardinha L, Laires MJ. Magnes Res. 2011 Dec;24(4):215-9.

36.Magnesium status and the physical performance of volleyball players: effects of magnesium supplementation.
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37.Exercise, magnesium and immune function.
Laires MJ, Monteiro C. Magnes Res. 2008 Jun;21(2):92-6.

38.Zinc, iron, and magnesium status in athletes--influence on the regulation of exercise-induced stress and immune function.
König D, Weinstock C, Keul J, Northoff H, Berg A. Exerc Immunol Rev. 1998;4:2-21.

39.Mg citrate found more bioavailable than other Mg preparations in a randomised, double-blind study.
Walker AF1, Marakis G, Christie S, Byng M. Magnes Res. 2003 Sep;16(3):183-91.

40.Magnesium bioavailability from magnesium citrate and magnesium oxide.
Lindberg JS, Zobitz MM, Poindexter JR, Pak CY. J Am Coll Nutr. 1990 Feb;9(1):48-55.

41.Zinc loss in sweat of athletes exercising in hot and neutral temperatures.
Tipton K, Green NR, Haymes EM, Waller M. Int J Sport Nutr. 1993 Sep;3(3):261-71.

42.The effect of exhaustion exercise on thyroid hormones and testosterone levels of elite athletes receiving oral zinc.
Kilic M, Baltaci AK, Gunay M, Gökbel H, Okudan N, Cicioglu I. Neuro Endocrinol Lett. 2006 Feb-Apr;27(1-2):247-52.

43.Zinc status and serum testosterone levels of healthy adults.
Prasad AS, Mantzoros CS, Beck FW, Hess JW, Brewer GJ. Nutrition. 1996 May;12(5):344-8.

44.Evidence of zinc deficiency in competitive swimmers.
Giolo De Carvalho F, Rosa FT, Marques Miguel Suen V, Freitas EC, Padovan GJ, Marchini JS. Nutrition. 2012 Nov-Dec;28(11-12):1127-31.

45.Zinc status in athletes: relation to diet and exercise.
Micheletti A, Rossi R, Rufini S. Sports Med. 2001;31(8):577-82.

46.Zinc metabolism in the athlete: influence of training, nutrition and other factors.
Couzy F, Lafargue P, Guezennec CY. Int J Sports Med. 1990 Aug;11(4):263-6.

47.Zinc absorption by young adults from supplemental zinc citrate is comparable with that from zinc gluconate and higher than from zinc oxide.
Wegmüller R, Tay F, Zeder C, Brnic M, Hurrell RF. J Nutr. 2014 Feb;144(2):132-6.

48.B-vitamins and exercise: does exercise alter requirements?
Woolf K, Manore MM. Int J Sport Nutr Exerc Metab. 2006 Oct;16(5):453-84.

49.Effect of physical activity on thiamine, riboflavin, and vitamin B-6 requirements.
Melinda M Manore. Am J Clin Nutr August 2000 vol. 72 no. 2 598s-606s.

50.Micronutrient Intakes in 553 Dutch Elite and Sub-Elite Athletes: Prevalence of Low and High Intakes in Users and Non-Users of Nutritional Supplements.
Wardenaar F, Brinkmans N, Ceelen I, Van Rooij B, Mensink M, Witkamp R, De Vries J Nutrients. 2017 Feb 15;9(2). pii: E142.

51.Nutritional habits among high-performance endurance athletes.
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52.Nutritional practices of elite athletes. Practical recommendations.
Economos CD, Bortz SS, Nelson ME. Sports Med. 1993 Dec;16(6):381-99.

53.Treatment of depression: time to consider folic acid and vitamin B12.
Coppen A, Bolander-Gouaille C. J Psychopharmacol. 2005 Jan;19(1):59-65.

54.B-vitamins reduce the long-term risk of depression after stroke.
Almeida OP, Marsh K, Alfonso H, Flicker L, Davis TM, Hankey GJ. Ann Neurol. 2010 Oct;68(4):503-10. doi: 10.1002/ana.22189.

55.Oral folic acid and vitamin B-12 supplementation to prevent cognitive decline in community-dwelling older adults with depressive symptoms--the Beyond Ageing Project: a randomized controlled trial.
Walker JG, Batterham PJ, Mackinnon AJ, Jorm AF, Hickie I, Fenech M, Kljakovic M, Crisp D, Christensen H, Am J Clin Nutr. 2012 Jan;95(1):194-203

56.Plasma vitamin B-12 concentrations relate to intake source in the Framingham Offspring study.
Tucker KL, Rich S, Rosenberg I, Jacques P, Dallal G, Wilson PW, Selhub J, Am J Clin Nutr. 2000 Feb;71(2):514-22.

57.Cobalamin.
Markle HV, Crit Rev Clin Lab Sci. 1996;33(4):247-356.

58.Improved bone metabolism in female elite athletes after vitamin K supplementation.
Craciun AM, Wolf J, Knapen MH, Brouns F, Vermeer C. Int J Sports Med. 1998 Oct;19(7):479-84.

59.Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women.
Knapen MH, Drummen NE, Smit E, Vermeer C, Theuwissen E. Osteoporos Int. 2013 Sep;24(9):2499-507.

60.Vitamin K2 Supplementation Improves Insulin Sensitivity via Osteocalcin Metabolism: A Placebo-Controlled Trial.
Hyung Jin Choi, MD, Juyoun Yu, BS, Hosanna Choi, BS, Jee Hyun An, MD, Sang Wan Kim, MD, PHD, Kyong Soo Park, MD, PHD, Hak C. Jang, MD, PHD, Seong Yeon Kim, MD, PHD and Chan Soo Shin, MD, PHD. Diabetes Care 2011 Sep; 34(9): e147-e147.

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62.Dietary intake of menaquinone is associated with a reduced risk of coronary heart disease: the Rotterdam Study.
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63.A high phylloquinone intake is required to achieve maximal osteocalcin gamma-carboxylation.
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