Vitamin D-3
Metabolic Maintenance
Vitamin D-3
4.8
★ ★ ★ ★ ★
(379 ratings)
Vitamin D 10000 IU
Vitamin C 300 mg
Score 75.0
A high-potency Vitamin D3 and Vitamin C combination, excellent for targeted immune and bone support, but its very high D3 dosage and premium price may not suit all users for general supplementation.
Quantity: 60 Capsule(s)Servings size: 1 Capsule(s) (60 servings)
Selected goals:
Other goals:
General Health
Immunity
Bone Health
Mood Support
Testosterone Support
leaderboard Score 75.0
A high-potency Vitamin D3 and Vitamin C combination, excellent for targeted immune and bone support, but its very high D3 dosage and premium price may not suit all users for general supplementation.
insights Analysis
Metabolic Maintenance's Vitamin D-3 offers a potent blend of 10,000 IU of Vitamin D3 (Cholecalciferol) and 300mg of Vitamin C (Ascorbic Acid). Both nutrients are well-established for their roles in immunity, bone health, and general well-being. The high dose of Vitamin D3 can be particularly beneficial for individuals with diagnosed deficiencies or those needing aggressive repletion, though it's advised to consult a healthcare professional for such high dosages for prolonged use. Vitamin C complements this by providing antioxidant support and boosting immune function. However, with a price per serving of 43, it stands out as a more expensive option compared to many widely available, equally effective Vitamin C and D supplements. Reviews suggest customer satisfaction with the product's efficacy, but the price point and the exceptionally high D3 dose might not be suitable for everyone's needs or budget.
- Provides a very high 10,000 IU dose of Vitamin D3, ideal for addressing significant deficiencies.
- Includes a beneficial 300mg of Vitamin C, synergistically supporting immunity and overall health.
- Utilizes Cholecalciferol (D3) and Ascorbic Acid, which are highly bioavailable forms of the respective vitamins.
- The 10,000 IU Vitamin D3 dose may be too high for general daily use without professional medical guidance.
- The price per serving is relatively high compared to many single-ingredient Vitamin D or Vitamin C supplements on the market.
- The review count (349) is moderate, suggesting less widespread adoption compared to some highly-reviewed competitors.
$26.00($0.43 per serving)
 Amazon | $ 26.00 | |
 Pure Formulas | $ 26.00 | |
 iHerb | $ 26.00 |
bolt Effectiveness for goals
Vitamin D plays a crucial role in regulating calcium and phosphate levels in the body, which are vital for bone mineralization. It helps the body absorb calcium from the diet, preventing conditions like osteoporosis. Adequate Vitamin D is essential for maintaining strong bones and preventing fractures.
Research suggests that regular Vitamin C supplementation may slightly reduce the duration and severity of the common cold in some individuals, but it typically does not prevent colds. For people undergoing extreme physical stress, like marathon runners, it might halve the risk of catching a cold. High doses taken after cold symptoms start generally do not provide significant benefit.
Vitamin D receptors are found on various immune cells, suggesting its role in immune modulation. Research indicates that adequate Vitamin D levels may support a healthy immune response and could reduce the risk of certain infections. However, more research is needed to fully understand its impact on specific immune conditions.
Generally, there is no known negative interaction between Vitamin C and Vitamin D when taken together. Both are commonly found in multivitamin formulations. Some research even suggests they may have complementary roles in immune support.
Vitamin C is a powerful antioxidant that helps protect cells from damage caused by free radicals, unstable molecules that can contribute to aging and disease. It neutralizes these free radicals, preventing oxidative stress. This protective effect supports cellular health throughout the body.
schedule Dosage, timing & forms
For most adults, the recommended daily allowance (RDA) is 600 International Units (IU), which is 15 micrograms (mcg). Some professionals suggest higher daily intakes, often between 1000-4000 IU, particularly for those with limited sun exposure. Individual needs may vary, and testing blood levels can guide appropriate dosage.
For most adult men, the recommended daily allowance (RDA) is 90 mg, and for adult women, it is 75 mg. Smokers require an additional 35 mg per day. These recommendations are generally sufficient to prevent deficiency.
Yes, Vitamin D is a fat-soluble vitamin, so it is best absorbed when taken with a meal containing some fat. Taking it with your largest meal of the day can help maximize absorption. This practice can significantly improve its bioavailability.
Vitamin C supplements are widely available as ascorbic acid, which is the most common form. Other forms include mineral ascorbates like sodium ascorbate or calcium ascorbate, which are buffered and may be gentler on the stomach. Liposomal Vitamin C is another form designed for potentially enhanced absorption.
The two main forms are Vitamin D2 (ergocalciferol) and Vitamin D3 (cholecalciferol). Vitamin D3 is generally considered more effective at raising and maintaining vitamin D levels in the blood. Both forms are available in various supplement types, including capsules, tablets, liquids, and chewables.
health_and_safety Safety & interactions
Yes, Vitamin C and Vitamin D can generally be taken together without any known adverse interactions. There is no evidence that they interfere with each other's absorption or efficacy. Many multivitamins contain both vitamins.
Current scientific understanding indicates no significant negative interactions between Vitamin C and Vitamin D when consumed within recommended supplement ranges. Both vitamins play distinct roles in the body and do not compete for absorption or metabolic pathways in a detrimental way. They are often found together in nutritional supplements.
High doses of Vitamin C, typically exceeding 2,000 mg daily, can lead to gastrointestinal issues such as diarrhea, nausea, and abdominal cramps. It may also cause headaches and flushing. These effects are generally mild and subside upon reducing the dose.
For adults, the tolerable upper intake level (UL) for Vitamin D is 4,000 International Units (IU) per day. Consuming amounts consistently above this level over time can lead to toxicity, primarily characterized by hypercalcemia. This UL applies to intake from all sources, including supplements, fortified foods, and sunlight exposure.
Vitamin D toxicity, or hypervitaminosis D, is rare and typically occurs from excessive supplementation, not sun exposure. Symptoms can include nausea, vomiting, weakness, frequent urination, and kidney problems due to high blood calcium levels. It is a serious condition that requires medical attention.
Ingredients
| Ingredient | Amount per serving |
|---|---|
| Vitamin C (Ascorbic Acid) | 300 mg |
| Vitamin D3 (Cholecalciferol) | 10000 IU |
Categories
Vitamin D 95.0
It delivers a very high potency of 10,000 IU of Vitamin D3 (Cholecalciferol), which is the most bioavailable form, making it exceptionally effective for addressing deficiencies and providing robust Vitamin D repletion and maintenance.
Vitamin C 90.0
The product provides a substantial 300mg dose of Vitamin C in the common and effective Ascorbic Acid form, contributing strongly to antioxidant defense and immune support, meeting the needs for effective supplementation.
Goals
Immunity 95.0
Both Vitamin D3 and Vitamin C are well-documented for their crucial roles in supporting immune function, and the dosages provided are significant, offering robust support against various pathogens and enhancing overall immune response.
Bone Health 95.0
Vitamin D3 is absolutely crucial for the absorption of calcium and phosphorus, facilitating bone mineralization and strength, directly supporting the maintenance of healthy bones and helping to prevent conditions like osteoporosis.
General Health 90.0
The combination of high-dose Vitamin D3 and Vitamin C contributes broadly to numerous physiological functions, from cellular protection to hormone balance, making it a strong contributor to overall well-being and maintenance of bodily systems.
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