Vitamin D-3 1000 IU
Source Naturals
Vitamin D-3 1000 IU
4.7
★ ★ ★ ★ ★
(3230 ratings)
Vitamin D 2000 IU
Score 92.0
A highly affordable and potent 2000 IU Vitamin D3, offering exceptional value.
Quantity: 200 Tablet(s)Servings size: 1 Tablet(s) (100 servings)
Selected goals:
Other goals:
General Health
Immunity
Bone Health
Mood Support
Testosterone Support
leaderboard Score 92.0
A highly affordable and potent 2000 IU Vitamin D3, offering exceptional value.
insights Analysis
This Source Naturals Vitamin D-3 product states 1000 IU in its name but crucially lists 2000 IU of Vitamin D3 (Cholecalciferol) in its ingredients, which is a strong, effective daily dose for many adults. Assuming the ingredient list is accurate, its exceptionally low price per serving makes it an outstanding value. The very high review count further solidifies its reputation as a reliable and popular choice for maintaining optimal vitamin D levels. The brand is known for its quality, despite the labeling discrepancy.
- Provides a robust 2000 IU dose of the highly effective Vitamin D3 (Cholecalciferol).
- Offers an exceptionally low price per serving, representing excellent value.
- Boasts a very high review count, indicating strong consumer trust and satisfaction.
- Comes from a reputable brand known for quality supplements.
- Inconsistency between the product name (1000 IU) and ingredient list (2000 IU) can cause confusion.
- Does not include synergistic nutrients like Vitamin K2 or Magnesium.
- Consumers should be aware of the discrepancy between the product name and the ingredient list regarding IU dosage. Rely on the ingredient list for actual content.
$8.16($0.08 per serving)
 iHerb | $ 8.16 | |
 Vitacost | $ 8.39 | |
 Amazon | $ 9.06 | |
| iHerb | $ 9.07 |
bolt Effectiveness for goals
Vitamin D is primarily effective for maintaining bone health by facilitating the absorption of calcium and phosphorus, which are essential for bone mineralization. It plays a crucial role in preventing conditions like rickets in children and osteomalacia in adults. Additionally, it supports various other bodily functions.
Yes, Vitamin D is recognized for its role in modulating the immune system. It can influence the activity of immune cells and their responses, potentially contributing to the body's ability to fight off pathogens. While studies show a link, its direct impact on specific immune conditions is an ongoing area of research.
Vitamin D, particularly when combined with calcium, has been shown to be effective in reducing the risk of falls in older adults. This is primarily due to its positive impact on bone density and muscle strength, which are crucial for balance and stability. Maintaining adequate Vitamin D levels is an important aspect of fall prevention strategies.
Vitamin D plays a role in muscle function and can help maintain muscle strength. Adequate levels are associated with better physical performance and a reduced risk of falls, particularly in older adults. It is involved in muscle contraction and growth processes.
Some research suggests a correlation between Vitamin D levels and mood regulation, with studies exploring its potential influence on mental well-being. However, the evidence is not conclusive enough to establish a direct causal link or recommend it as a primary treatment for mood disorders. More research is needed in this area.
schedule Dosage, timing & forms
For many adults, the recommended dietary allowance (RDA) of Vitamin D is 600-800 International Units (IU) daily. However, individual needs can vary based on factors like age, sun exposure, and baseline vitamin D levels. It's important to consult a healthcare professional for personalized dosage recommendations.
Yes, Vitamin D is a fat-soluble vitamin, meaning it is best absorbed when taken with a meal containing some fat. Taking it with your largest meal of the day, or at least a meal with a source of fat, can significantly enhance its absorption. This improves its bioavailability in the body.
The tolerable upper intake level (UL) for Vitamin D for most adults is 4,000 IU per day. Consuming amounts significantly above this limit without medical supervision may increase the risk of toxicity, leading to hypercalcemia. Always adhere to recommended dosages unless advised otherwise by a healthcare provider.
Vitamin D3 (cholecalciferol) is generally considered more potent and effective at raising and maintaining circulating 25(OH)D levels in the blood compared to Vitamin D2 (ergocalciferol). Studies suggest D3 leads to a more sustained increase in Vitamin D status. Both forms convert to the active form, but D3 appears to do so more efficiently.
The two main forms of Vitamin D found in supplements are Vitamin D2 (ergocalciferol) and Vitamin D3 (cholecalciferol). Vitamin D3 is generally considered more effective at raising and maintaining vitamin D levels in the body. Supplements are available as capsules, tablets, liquids, and sprays.
health_and_safety Safety & interactions
Excessively high doses of Vitamin D can lead to vitamin D toxicity, also known as hypervitaminosis D. This condition can cause a dangerous buildup of calcium in the blood (hypercalcemia), leading to symptoms like nausea, vomiting, weakness, and kidney problems. It typically occurs from megadoses of supplements, not from sun exposure or diet.
Yes, Vitamin D can interact with certain medications. These may include steroids, weight-loss drugs like orlistat, cholesterol-lowering statins, and some diuretics. It is important to discuss all medications and supplements with a healthcare provider to avoid potential interactions.
Symptoms of Vitamin D toxicity, or hypercalcemia, can include nausea, vomiting, loss of appetite, excessive thirst, and frequent urination. More severe signs might involve kidney problems, bone pain, and confusion. If these symptoms occur, discontinue supplementation and seek medical attention.
Vitamin D is generally considered safe and often recommended during pregnancy and breastfeeding, as it supports maternal and infant health. However, it is crucial to follow the dosage recommendations provided by a healthcare provider. Excessive amounts should be avoided.
Yes, individuals with conditions causing hypercalcemia (high blood calcium) should generally avoid Vitamin D supplementation. Vitamin D increases calcium absorption, which could worsen already elevated calcium levels. Always consult a doctor if you have such a condition.
Ingredients
| Ingredient | Amount per serving |
|---|---|
Vitamin D3 | 2000 IU |
Categories
Vitamin D 92.0
This product is an outstanding choice within the Vitamin D collection, offering a potent 2000 IU dose of D3 at an exceptionally low price per serving. Its excellent bioavailability and value make it a top contender for daily Vitamin D supplementation, despite the minor naming discrepancy.
Goals
General Health 92.0
The 2000 IU dose of Vitamin D3 provides excellent support for general health, optimizing various physiological functions crucial for overall well-being. Its great value encourages consistent long-term use.
Immunity 92.0
Adequate Vitamin D levels are vital for a robust immune system, playing a key role in modulating immune responses and enhancing the body's defenses. The 2000 IU dosage offers significant and effective support for immune function.
Bone Health 92.0
Vitamin D3 is essential for efficient calcium absorption and bone mineralization, directly contributing to strong and healthy bones. This dosage is highly effective for maintaining bone density and preventing skeletal issues.
Recommended Alternatives
95 Value 
Vitamin D-3 2000 IU
Source Naturals
4.8
★★★★★
(2549 ratings)
The most direct 'better value' as it's the exact same product type and dose but at a lower price per serving, maximizing cost-effectiveness for 2000 IU D3.
90 Value 
D3-5
Bio-Tech Pharmacal
4.8
★★★★★
(498 ratings)
Provides 5000 IU of D3 at an extremely low price per serving, offering significantly more D3 potency for minimal additional cost, representing outstanding value.
92 Value 
Vitamin D3 5000 IU
Spring Valley
4.8
★★★★★
(5316 ratings)
Delivers a much higher 5000 IU D3 dose for an incredibly low price per serving, making it an excellent value choice for those needing higher potency.
98 Performance 
Vitamin D Supreme with Vitamin K1 and K2
Designs for Health
4.7
★★★★★
(3741 ratings)
A superior D3 formulation due to the crucial inclusion of Vitamin K1 and K2, which are essential for optimal D3 utilization, bone health, and cardiovascular benefits.
98 Performance 
Vitamin D3 5000 IU
Paradise Earth's Blend
4.7
★★★★★
(1461 ratings)
Offers a higher 5000 IU D3 dose alongside a robust blend of organic superfoods, adaptogens, and probiotics, providing more comprehensive health benefits.
70 Performance 
Certified Vegan D3 5000 IU
Country Life
4.8
★★★★★
(472 ratings)
A better option for those seeking a truly vegan D3 source (from lichen) with a higher potency, ensuring effective supplementation without animal byproducts.
95 Budget
Vitamin D-3 2000 IU
Source Naturals
4.8
★★★★★
(2549 ratings)
Essentially the same product from the same brand, offering the identical 2000 IU D3 dose at an even lower price per serving, making it the most economical option.
92 Budget
Vitamin D3 5000 IU
Spring Valley
4.8
★★★★★
(5316 ratings)
Delivers a significantly higher 5000 IU D3 dose at an incredibly low price per serving, providing superior cost-effectiveness per IU of D3.
90 Budget
D3-5
Bio-Tech Pharmacal
4.8
★★★★★
(498 ratings)
Offers 5000 IU of D3 at a very competitive price per serving, providing more than double the potency for a similar or lower price per IU.
95 Value
Vitamin D-3 2000 IU
Source Naturals
4.8
★★★★★
(2549 ratings)
The most direct 'better value' as it's the exact same product type and dose but at a lower price per serving, maximizing cost-effectiveness for 2000 IU D3.
90 Value
D3-5
Bio-Tech Pharmacal
4.8
★★★★★
(498 ratings)
Provides 5000 IU of D3 at an extremely low price per serving, offering significantly more D3 potency for minimal additional cost, representing outstanding value.
92 Value
Vitamin D3 5000 IU
Spring Valley
4.8
★★★★★
(5316 ratings)
Delivers a much higher 5000 IU D3 dose for an incredibly low price per serving, making it an excellent value choice for those needing higher potency.
98 Performance
Vitamin D Supreme with Vitamin K1 and K2
Designs for Health
4.7
★★★★★
(3741 ratings)
A superior D3 formulation due to the crucial inclusion of Vitamin K1 and K2, which are essential for optimal D3 utilization, bone health, and cardiovascular benefits.
98 Performance
Vitamin D3 5000 IU
Paradise Earth's Blend
4.7
★★★★★
(1461 ratings)
Offers a higher 5000 IU D3 dose alongside a robust blend of organic superfoods, adaptogens, and probiotics, providing more comprehensive health benefits.
70 Performance
Certified Vegan D3 5000 IU
Country Life
4.8
★★★★★
(472 ratings)
A better option for those seeking a truly vegan D3 source (from lichen) with a higher potency, ensuring effective supplementation without animal byproducts.