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Liquid Vitamin D3 on MCT Oil - Solvita-D3
€18.90
DLUO : 30/09/27
Shipped on : 22 January 2025
Natural Vitamin D3 derived from lanolin, biologically identical to the one we produce, unlike Vitamin D2 which is 70% less effective.
Solvita-D3 is emulsified with MCT oil (Medium-Chain Triglycerides) for 3 times higher absorption compared to canola, olive, or sunflower oil.
50 mL bottle. Neutral taste, non-greasy. Easy to dose. Lasts 160 days at 2000 IU/day.
An Essential Vitamin We All Lack
According to the French Academy of Medicine, nearly 80% of the general population and almost 100% of seniors are deficient in vitamin D. As we age, our bodies find it increasingly difficult to produce this vitamin.
About 80% of our vitamin D intake comes from sun exposure. In Europe, from October to April, our bodies cannot produce vitamin D because of the angle of the Sun's rays.
Even in the summer, we don’t always synthesize enough vitamin D due to clothing and sunscreen use (which we still need to apply to prevent skin cancer).
Vitamin D3 supports the normal absorption of calcium and phosphorus, which is crucial for maintaining healthy bones and muscles.
This vitamin also plays a key role in supporting a healthy immune system.
Additionally, it is now recognized that there is a link between vitamin D deficiency and depression.
Beyond its well-known functions, we now understand that vitamin D affects over 1,000 genes. A deficiency is associated with long-term health issues, including cardiovascular diseases, certain cancers (colon, breast, prostate), the development of autoimmune diseases, reduced insulin-producing cell function, an increased risk of respiratory infections, and more.
Why Choose Solvita-D3 Over Other Sources of Vitamin D?
• Maximum Bioavailability: Solvita-D3 is an emulsion made with MCT oil (Medium Chain Triglycerides) derived from coconut oil, which is 2 to 3 times more effectively absorbed than standard fat-soluble vitamin preparations, such as those using canola oil.
It’s important to note that dry form vitamin D (tablets) is poorly absorbed by the body.
• The vitamin D3 in Solvita-D3 is naturally sourced (from lanolin), identical to what we naturally produce when exposed to the sun during summer months.
• Solvita-D3 contains the most effective form of vitamin D, vitamin D3, and does not contain vitamin A. Vitamin D3 should not be confused with Vitamin D2, which is 70% less effectively absorbed compared to Vitamin D3 in the short term.
• Solvita-D3 can be taken daily, preferably with a meal.
It is far more natural for the body to receive a lighter dose daily rather than a high dose weekly or monthly.
• Thanks to its liquid form and dropper (not a pipette), this vitamin D is easy to administer to babies and young children, with no risk from an early age.
Composition
Vitamin D3 (cholecalciferol)
Per drop: 200 IU or 5 µg (100% RDA)
1 ml contains approximately 31 drops
50 mL bottle
Adults and children aged 10 and above: 5 to 10 drops per day with meals.
Children under 10 years old: 2 to 5 drops per day with meals.
It is much more natural for the body to receive a smaller daily dose rather than a high dose every week or month.
In cases of Vitamin D deficiency, the dosage can be increased to 2 drops per 15kg of body weight. For example, 8 drops for a person weighing 60kg (maximum 10).
Solvita-D3 can be taken year-round by people of all ages.
When to Take Solvita-D3?
According to the French Academy of Medicine, nearly 80% of the general population and almost 100% of seniors are deficient in vitamin D. As we age, the body finds it harder to produce this vitamin.
• To maintain strong bones in adults and support proper bone development in children
• For effective calcium absorption
• For strong, healthy muscles (weakness, cramps)
• In case of cardiovascular issues
• To boost the immune system
• If you are overweight
• If a blood test shows a vitamin D deficiency
• In case of depression or low mood, especially in winter
• During pregnancy due to increased needs
• For those who must stay indoors
Possible Side Effects
No known side effects have been reported for the recommended dosage.
Additional Tips
- To boost your immune system, combine Solvita-D3 with Solimmun and Solexhal for colds.
- To strengthen your bones, pair Solvita-D3 with liposomal magnesium.
- For muscle and mobility issues, combine Solvita-D3 with Solquinol, ultra-absorbable reduced coenzyme Q10 and Solumine, optimized curcumin.
- To improve your mood, consider pairing Solvita-D3 with Soltonic for anxiety relief or Solafran for mild depression.
Scientific Information and Specific Indications for Taking Vitamin D3
The Multiple Physiological Roles of Vitamin D
Due to its essential role in calcium metabolism, vitamin D is important for bone health.
Vitamin D enhances calcium absorption from the intestine and increases calcium reabsorption in the kidneys.
Vitamin D also plays a role in muscle function. Activating the vitamin D receptor leads to increased protein production in muscle cells, which positively influences muscle mass and contraction strength.
This explains why optimal serum vitamin D levels are crucial for athletes hoping to achieve peak performance. (1)
As a “hormone,” vitamin D affects more than 1,000 genes. A deficiency is linked to cardiovascular issues, insulin resistance (development of diabetes), certain cancers (colon, breast, prostate), microbial infections, and autoimmune diseases (including type 1 diabetes, rheumatoid arthritis, and multiple sclerosis) (2).
Recent research suggests vitamin D also has roles in various systems beyond the skeleton: the immune system, insulin-producing β-cells, the cardiovascular system, and muscle tissue (3).
Furthermore, recent studies show a link between vitamin D deficiency and depression, with a correlation between low vitamin D levels and the development of depressive symptoms.
For these reasons, many researchers recommend vitamin D supplementation when sun exposure is insufficient, as maintaining high and steady vitamin D levels in the blood could reduce mortality rates (5).
|
Vitamin D’s Association with Various Physiological Systems |
What Role Does Vitamin D Play? |
|
Maintaining strong bones and healthy teeth |
Calcium absorption from the intestine, calcium/phosphorus homeostasis, bone mineralization and remodeling |
|
Healthy cell growth (prostate, breast, colon, white blood cells) |
Regulation of the cell cycle, cell division |
|
Normal immune system function (better defense, autoimmunity suppression) |
Activation of macrophages and production of antimicrobial peptides, suppression of dendritic cells and TH1 cells |
|
Carbohydrate metabolism |
Stimulation of insulin secretion by pancreatic β-cells |
|
Maintaining normal blood pressure and coagulation, supporting the heart muscle |
Regulation of the renin-angiotensin system, coagulation, fibrinolysis, heart muscle function |
|
Maintaining muscle strength, preventing falls |
Promotion of normal skeletal development |
|
Mood and memory function |
Under study: the brain has vitamin D receptors |
What Intake Is Necessary?
Recent research shows that optimal vitamin D intake is much higher than previously thought. For most adults, a daily supplement of 1,000 to 2,000 IU of vitamin D3 is desirable, with a maximum of 10,000 IU per day for up to 6 months (6). A minimum of 800 IU per day is required to increase serum vitamin D levels (25(OH)D) (7). Some researchers suggest that a daily dose of 4,000 to even 5,000 IU may be needed to reach optimal serum vitamin D levels to prevent diseases (8, 9).
Scientific Studies on Vitamin D Supplementation
Respiratory Infections
A British study involving 6,789 participants found that higher vitamin D levels were associated with a reduced risk of upper respiratory infections.
Researchers calculated that for every 10 nmol/L increase in serum calcidiol levels, the risk of infection decreased by 7% (10).
Depression
A large-scale study of 12,594 individuals (both men and women) showed that higher serum calcidiol levels (a measure of vitamin D content) were linked to fewer depressive symptoms.
This was particularly true for those with a history of major depressive episodes (11, 12).
Another study linked a reduction in depression to vitamin D supplementation, especially in overweight individuals. Conducted on 441 overweight participants, they received 20,000 or 40,000 IU per week for one year (13).
Seasonal Depression (Winter Blues)
Seasonal depression primarily affects individuals living far from the equator, particularly young women, and is characterized by low energy and mood. Vitamin D is among the possible treatments (alongside phototherapy and antidepressants) (14).
Moreover, there is an association between serum vitamin D levels and seasonal depression. A study on 185 young women measured vitamin D3 levels, showing that low vitamin D was a predictor of depressive episodes (15).
Bone Strengthening
A seven-year study on 6,712 girls aged 9 to 15 found that it was not calcium or milk intake but vitamin D consumption that reduced the risk of stress fractures in adolescents engaging in an hour of intense exercise daily (16).
Reducing Fall and Fracture Risk in Seniors
A meta-analysis of 30,373 individuals in care facilities showed that vitamin D supplementation reduced fall frequency. This is linked to seniors often being vitamin D deficient (17).
It has also been demonstrated that vitamin D supplementation, along with calcium if necessary, significantly reduces fracture risk in the elderly (18).
Heart Health, Especially in Postmenopausal Women
A Danish study of 2,016 postmenopausal women over 16 years revealed that vitamin D deficiency was associated with a higher risk of heart health issues (19).
Improved Quality of Life and Age-Related Symptoms with Vitamin D3 Supplementation in Postmenopausal Women
A two-year study on 485 postmenopausal women concluded that calcium and vitamin D3 supplementation (800 IU daily) significantly improved age-related symptoms (20).
Acne Treatment
A two-month study on 80 acne patients showed that 1,000 IU of vitamin D3 daily significantly reduced symptoms (21).
Which Type of Vitamin D, D2 or D3?
Vitamin D3, or cholecalciferol, is the most effective form of vitamin D. After two weeks of supplementation with equal amounts (4,000 IU) of vitamin D3 or vitamin D2 (ergocalciferol), serum vitamin D levels were 70% higher in the vitamin D3 group compared to the vitamin D2 group (22).
Another study on 33 people highlighted an 87% difference between vitamin D2 and D3 in their respective abilities to raise and maintain satisfactory vitamin D blood levels (23).
Vitamin D3 Can Be Used to Support the Following:
• Osteoporosis and bone fragility
• Weak immune system
• Cardiovascular problems
• Muscle weakness and cramps
• Poor calcium absorption
• Depression
• Overweight issues
• Gingivitis (bleeding gums)
• Diabetes
• Autoimmune diseases (Multiple sclerosis, rheumatoid arthritis, type 1 diabetes, vitiligo, lupus)
• Acne
• Increased vitamin D needs (elderly, pregnant women, winter months, indoor lifestyle, darker skin)
References
1 Cannell JJ, Hollis BW, Sorenson MB, Taft TN, Anderson JJ. Athletic performance and vitamin D. Med Sci Sports Exerc 2009;41(5):1102-10.
2 Norman AW, Bouillon R. Vitamin D nutritional policy needs a vision for the future. Exp Biol Med (Maywood) 2010; 235(9):1034-45.
3 Barnard K, Colon-Emeric C. Extraskeletal effects of vitamin D in older adults: cardiovascular disease, mortality, mood, and cognition. Am J Geriatr Pharmacother 2010; 8(1):4-33.
4 Grant WB, Boucher BJ. Requirements for Vitamin D Across the Life Span. Biol Res Nurs 2011 Jan 17.
5 Autier P, Gandini S. Vitamin D supplementation and total mortality: a meta-analysis of randomized controlled trials. Arch Intern Med. 2007 Sep 10;167(16):1730-7.
6 Bischoff-Ferrari H. Vitamin D: what is an adequate vitamin D level and how much supplementation is necessary? Best Pract Res Clin Rheumatol 2009; 23(6):789-95.
7 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.
8 Hin H, Tomson J, Newman C, Kurien R, Lay M, Cox J, Sayer J, Hill M, Emberson J, Armitage J, Clarke R. Optimum dose of vitamin D for disease prevention in older people: BEST-D trial of vitamin D in primary care. Osteoporos Int. 2016 Dec 16
9 Diamond T, Wong YK, Golombick T. Effect of oral cholecalciferol 2,000 versus 5,000 IU on serum vitamin D, PTH, bone and muscle strength in patients with vitamin D deficiency. Osteoporos Int. 2013 Mar;24(3):1101-5
10 Berry DJ, Hesketh K, Power C, Hypponen E. Vitamin D status has a linear association with seasonal infections and lung function in British adults. Br J Nutr 2011;106(9):1433-40.
11 Hoang MT, Defina LF, Willis BL, Leonard DS, Weiner MF, Brown ES. Association between low serum 25-hydroxyvitamin D and depression in a large sample of healthy adults: the Cooper Center longitudinal study. Mayo Clin Proc 2011; 86(11):1050-5.
12 Jonathan A. Shaffer, PhD, MS Biostats, Donald Edmondson, PhD, MPH, Lauren Taggart Wasson, MD, MPH, Louise Falzon, PGDipInf, Kirsten Homma, BA, Nchedcochukwu Ezeokoli, Peter Li, BA, and Karina W. Davidson, PhD
13 R. Jorde, M. Sneve, Y. Figenschau, J. Svartberg, K. Waterloo. Effects of vitamin D supplementation on symptoms of depression in overweight and obese subjects: randomized double blind trial. Journal of internal medicine doi: 10.1111/j.1365-2796.2008.02008.x
14 Melrose S. Seasonal Affective Disorder: An Overview of Assessment and Treatment Approaches. Depress Res Treat. 2015;2015:178564.
15 Kerr DC, Zava DT, Piper WT, Saturn SR, Frei B, Gombart AF. Associations between vitamin D levels and depressive symptoms in healthy young adult women. Psychiatry Res. 2015 May 30;227(1):46-51
16 Sonneville KR, Gordon CM, Kocher MS et al. Vitamin D, Calcium, and Dairy Intakes and Stress Fractures Among Female Adolescents. Arch Pediatr Adolesc Med. 2012 Mar 5.
17 Cameron ID, Murray GR, Gillespie LD, Robertson MC, Hill KD, Cumming RG, Kerse N. Interventions for preventing falls in older people in nursing care facilities and hospitals. Cochrane Database Syst Rev 2010;(1):CD005465.
18 Lips P, Bouillon R, van Schoor NM, Vanderschueren D, Verschueren S, Kuchuk N, Milisen K, Boonen S. Reducing fracture risk with calcium and V itamin D. Clin Endocrinol (Oxf) 2010; 73(3):277-85.
19 Schierbeck LL, Rejnmark L, Tofteng C, Stilgren L, Eiken P, Mosekilde L, Kober L, Jensen JE. Vitamin D deficiency in postmenopausal, healthy women predicts increased cardiovascular events--a 16-year follow-up study. Eur J Endocrinol 2012 Aug 8.
20 Gao LH, Zhu WJ, Liu YJ, Gu JM, Zhang ZL, Wang O, Xing XP, Xu L. Physical performance and life quality in postmenopausal women supplemented with vitamin D: a two-year prospective study. Acta Pharmacol Sin. 2015 Sep;36(9):1065-73.
21 Lim SK, Ha JM, Lee YH, Lee Y, Seo YJ, Kim CD, Lee JH, Im M. Comparison of Vitamin D Levels in Patients with and without Acne: A Case-Control Study Combined with a Randomized Controlled Trial. PLoS One. 2016 Aug 25;11(8):e0161162.
22 Armas LA, Hollis BW, Heaney RP. Vitamin D2 is much less effective than vitamin D3 in humans. J Clin Endocrinol Metab 2004; 89(11):5387-91.
23 Heaney RP, Recker RR, Grote J, Horst RL, Armas LA. Vitamin D3 Is More Potent Than Vitamin D2 in Humans. J Clin Endocrinol Metab 2010 Dec 22.
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FAQ (questions fréquentes)
- Most of our nutrients come from France or Europe (local is a priority), except when we can't do otherwise (for curcuma, for example). We never choose ingredients from places or countries where quality is not assured and workers are poorly paid.
- Solage products are designed in France and manufactured according to GMP (Good Manufacturing Practice) standards from the pharmaceutical industry and the HACCP (Hazard Analysis Critical Control Point) method, developed by NASA.
Both methods implement procedures, documents and controls to guarantee perfect traceability and the absence of biological or chemical contamination.
- Solage is a French company, and its products are registered with the relevant authorities.
Solage products are safe, with no bad surprises.
To answer this question, we distinguish between three types of product, depending on their nature and intended purpose:
1/ Ideally taken as a continuous treatment: those which compensate for a nutritional or age-related deficiency, and which serve to restore the body's functions without altering its normal metabolism.
- Common nutritional deficiencies: marine omega-3, vitamin C, magnesium, vitamin D between October and May
- Age-related or pathological deficiencies: Ubiquinol, Glutathione, Iron, Collagen (type I and II)
- To help the body deal with underlying problems: Saffron, Ashwagandha, Men's and women's urinary comfort, cholesterol
2/ To be taken in a cure, but where a break is not necessarily necessary if you or your healthcare professional find it useful:
Detox: Milk thistle, Glutathione
Digestion: Probiotics
3/ Products where a break is useful:
- Curcumin: at least a break of a few days between each box, as it modifies metabolic pathways in the body
- Echinacea (immunity): a break of a few days between each box so as not to over-stimulate the immune system
- Melatonin: avoid taking it every day over the long term, so as not to habituate the body.
In all cases, it's important to remember that the products we offer are genuinely active, that it's important to respect dosage and that they are not a substitute for a varied, balanced diet and a healthy lifestyle.
This will of course depend on the product and your physiological state.
It's worth remembering that physiology is a long-term process, and that it generally takes two to three months, sometimes longer, to achieve a profound change.
However, the feeling is generally quicker, between 15 days and two months.It is then necessary to continue to try to fix these initial results in greater depth.
However, this will be much quicker with subsequent products:
- Melatonin and sublingual GABA, which have a very rapid onset of action (between two minutes and 30 minutes)
- Probiotics (48 hours to two weeks))
Please refer to the “Scientific studies” section of this product page, where you'll find most studies on bioavailability and medium-term effects.
