One Daily Women's
21st Century
One Daily Women's
4.7
★ ★ ★ ★ ★
(31249 ratings)
Vitamin K 25 mcg
Copper 0.9 mg
Iron 18 mg
Calcium 380 mg
Iodine 150 mcg
Biotin 1000 mcg
Manganese 1.8 mg
Score 68.0
This highly affordable multivitamin offers a broad spectrum of essential vitamins and minerals tailored for women's general health, including a high dose of biotin. While it uses commonly available and less expensive forms of some nutrients, its comprehensive profile at an extremely low price per serving makes it an accessible option for basic nutritional support.
Quantity: 100 Tablet(s)Servings size: 1 Tablet(s) (100 servings)
Selected goals:
Other goals:
Bone Health
Heart Health
Joint Health
Muscle Gain
Cardiovascular Support
leaderboard Score 68.0
This highly affordable multivitamin offers a broad spectrum of essential vitamins and minerals tailored for women's general health, including a high dose of biotin. While it uses commonly available and less expensive forms of some nutrients, its comprehensive profile at an extremely low price per serving makes it an accessible option for basic nutritional support.
insights Analysis
21st Century One Daily Women's provides a very broad and inclusive range of vitamins and minerals at an outstanding price point, making it highly accessible for daily supplementation. It's particularly well-suited for women due to the inclusion of 18mg of Iron, meeting the RDA for pre-menopausal women, and a substantial 1000mcg of Biotin, often sought for beauty benefits. Furthermore, the 25mcg (1000 IU) of Vitamin D3 is a beneficial dose for bone health and immune support. However, the formulation's cost-effectiveness often translates to the use of less bioavailable forms of nutrients, such as Calcium Carbonate, Cyanocobalamin for B12, and Folic Acid instead of methylated folate, along with basic mineral salts. This can lead to potentially suboptimal absorption for some individuals, and nutritionists frequently recommend alternatives with chelated or methylated forms for enhanced efficacy. Despite these considerations, its robust nutrient coverage and significant cost advantage explain its high popularity and review count.
- Extremely affordable price per serving, offering great value.
- Provides a comprehensive blend of essential vitamins and minerals.
- Contains an appropriate dose of iron, crucial for many women.
- High dose of biotin (1000mcg) directly supports hair, skin, and nail health.
- Includes a good amount of Vitamin D3 (1000 IU) for bone and immune support.
- Utilizes less bioavailable forms of several nutrients (e.g., Calcium Carbonate, Cyanocobalamin, Folic Acid).
- The high biotin dose can potentially interfere with certain laboratory tests, particularly thyroid function tests.
- May not offer optimal absorption for all individuals due to the choice of ingredient forms.
- The elevated biotin content may interfere with lab test results, especially for thyroid and cardiac biomarkers. It is advisable to inform healthcare professionals about biotin supplementation before any blood work.
- Calcium Carbonate is best absorbed when consumed with food to optimize its bioavailability.
- Individuals with MTHFR gene variations may have difficulty metabolizing the Folic Acid form of Folate, potentially leading to reduced effectiveness.
$3.18($0.03 per serving)
 Pure Formulas | $ 3.18 | |
 Amazon | $ 5.04 | |
 iHerb | $ 6.58 | |
 Walmart | $ 8.59 |
bolt Effectiveness for goals
B vitamins, including Thiamine, Riboflavin, Niacin, B6, B12, and Pantothenic Acid, act as cofactors in metabolic pathways. These pathways convert food into cellular energy. They are crucial for maintaining overall vitality and normal bodily functions.
Iron is vital for producing hemoglobin, which transports oxygen in the blood. Women of reproductive age have increased iron needs due to menstrual blood loss. Supplementation can help prevent iron deficiency.
Calcium is a fundamental building block for bone structure. Vitamin D3 is essential for the body to absorb calcium from the diet. Vitamin K helps to regulate calcium's role in bone mineralization.
Vitamin C significantly enhances the absorption of non-heme iron, which is found in plant-based foods and supplements. This interaction improves iron's bioavailability for red blood cell formation. It aids in the body's ability to utilize iron effectively.
Vitamins C and E are powerful antioxidants that help protect cells from damage caused by free radicals. Selenium also acts as a cofactor for antioxidant enzymes in the body. Together, they contribute to the body's defense against oxidative stress.
schedule Dosage, timing & forms
Most daily multivitamin supplements, including those formulated for women, are designed to be taken once per day. This dosage typically provides the recommended daily allowances for a range of essential vitamins and minerals. Following the label's instructions ensures consistent nutrient intake.
Yes, it is generally recommended to take multivitamins that contain fat-soluble vitamins such as A, D3, E, and K with a meal that includes some fat. This can help enhance the absorption of these vitamins into the body. Taking them with food may also help reduce the chance of stomach upset.
Calcium carbonate, a common form of calcium found in supplements, is best absorbed when taken with food. The stomach acid produced during digestion helps break down and absorb this specific form of calcium effectively. Taking it with meals can maximize its bioavailability.
Iron absorption can be enhanced when taken with Vitamin C, which is commonly present in multivitamins. However, other compounds like calcium can inhibit iron absorption, so if taking separate high-dose supplements, separating intake by a few hours might be considered. Taking iron with food can also help minimize stomach upset, though it may slightly reduce absorption.
Yes, calcium can interfere with the absorption of non-heme iron, the type typically found in supplements and plant-based foods, when taken together in high amounts. While a daily multivitamin usually contains moderate doses, if higher individual iron or calcium supplementation is needed, separating their intake by a few hours might optimize absorption for each.
health_and_safety Safety & interactions
Iron supplements can sometimes cause gastrointestinal side effects such as constipation, nausea, or stomach upset. Taking iron with food may help to reduce these effects for some individuals. The type of iron used can also influence these effects.
Yes, calcium can inhibit the absorption of non-heme iron when consumed at the same time. To optimize absorption of both, it is sometimes suggested to take them at different times of the day. However, this interaction may not be clinically significant for all individuals.
Yes, vitamin K plays a role in blood clotting, which can interfere with the effectiveness of anticoagulant medications like warfarin. Individuals taking such medications should discuss their vitamin K intake with a healthcare professional.
High doses of biotin have been reported to interfere with various lab tests, particularly those that use biotin-streptavidin technology. This interference can lead to falsely high or low results, depending on the test. It is advisable to inform your doctor about biotin supplementation before any lab work.
Yes, high doses of zinc can compete with copper for absorption in the small intestine. Prolonged high zinc intake without adequate copper can potentially lead to copper deficiency. Many multivitamin formulations typically balance these two minerals.
Ingredients
| Ingredient | Amount per serving |
|---|---|
Vitamin A | 700 mcg |
Vitamin C | 75 mg |
Vitamin D3 | 25 mcg |
Vitamin E | 7.5 mg |
Vitamin K | 25 mcg |
Thiamine | 1.2 mg |
Riboflavin | 1.3 mg |
Niacin | 16 mg |
Vitamin B6 | 1.7 mg |
Folate | 667 mcg DFE |
Vitamin B12 | 6 mcg |
Biotin | 1000 mcg |
Pantothenic Acid | 5 mg |
Calcium | 380 mg |
Iron | 18 mg |
Iodine | 150 mcg |
Zinc | 8 mg |
Selenium | 27.5 mcg |
Copper | 0.9 mg |
Manganese | 1.8 mg |
Chromium | 25 mcg |
Categories
Biotin 90.0
Provides a very generous 1000mcg of D-Biotin, an excellent dose for those specifically looking to support hair, skin, and nail health. This amount significantly exceeds the general daily requirement.
Iron 90.0
Delivers 18mg of Iron as Ferrous Fumarate, which is the recommended daily allowance for most pre-menopausal women and is crucial for preventing iron deficiency anemia. This is a highly appropriate dose for its target demographic.
Iodine 85.0
Provides 150mcg of Iodine as Potassium Iodide, fulfilling the daily recommended intake for adults and essential for thyroid hormone production and metabolic regulation. This is a very good and standard dose.
Goals
Hair Health 85.0
The product contains a very high dose of 1000mcg of Biotin, which is a key nutrient widely recognized for its role in supporting the health and strength of hair. Additionally, it includes Vitamin C, E, and Zinc, all of which contribute to skin and nail integrity.
Skin Health 85.0
The product contains a very high dose of 1000mcg of Biotin, which is a key nutrient widely recognized for its role in supporting the health and strength of skin. Additionally, it includes Vitamin C, E, and Zinc, all of which contribute to skin and nail integrity.
Nail Health 85.0
The product contains a very high dose of 1000mcg of Biotin, which is a key nutrient widely recognized for its role in supporting the health and strength of nails. Additionally, it includes Vitamin C, E, and Zinc, all of which contribute to skin and nail integrity.
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