B-100
NOW
B-100
4.8
★ ★ ★ ★ ★
(9362 ratings)
Vitamin B5 100 mg
PABA 10 mg
Riboflavin 100 mg
Choline 10 mg
Thiamin 100 mg
Niacin 100 mg
Vitamin B12 100 mcg
Score 78.0
A high-potency B-complex by NOW, delivering 100mg of most B vitamins for strong energy and metabolism support. It's a popular and generally effective choice, though it uses standard, non-active forms for some key B vitamins.
Quantity: 250 Capsule(s)Servings size: 1 Veg Capsule(s) (250 servings)
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Skin Health
Stress Relief
Energy
Hair Health
Mood Support
leaderboard Score 78.0
A high-potency B-complex by NOW, delivering 100mg of most B vitamins for strong energy and metabolism support. It's a popular and generally effective choice, though it uses standard, non-active forms for some key B vitamins.
insights Analysis
NOW B-100 is designed for individuals seeking higher concentrations of B vitamins to support intense energy demands, stress management, and overall metabolic function. It provides 100mg of most B vitamins (B1, B2, B3, B5, B6), along with 100mcg of Biotin and B12, and 680mcg DFE of Folate. While the potency is impressive, it continues the brand's trend of using non-active forms like Cyanocobalamin (B12) and Pyridoxine Hydrochloride (B6), which might hinder optimal absorption for some users. Online reviews frequently highlight noticeable improvements in energy and mood, validating its effectiveness as a high-dose B-complex from a trusted manufacturer.
- Delivers high dosages of most B vitamins (100mg), ideal for those with increased needs.
- Good value for a B-100 complex from a reputable brand.
- Contains a full spectrum of B vitamins, including Biotin, Pantothenic Acid, and Folate.
- Uses non-active forms of Vitamin B12 (Cyanocobalamin) and Vitamin B6 (Pyridoxine Hydrochloride), which are less bioavailable.
- The amounts of Choline, Inositol, and PABA are relatively low (10mg) compared to the higher B vitamin doses in this formula.
- High doses of Niacin (Vitamin B3) can sometimes cause a temporary 'niacin flush' in sensitive individuals, though Niacinamide is used here which minimizes this.
- Expect bright yellow urine due to the high Riboflavin content, which is harmless.
$27.99($0.11 per serving)
 Amazon | $ 27.99 | |
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bolt Effectiveness for goals
B vitamins are essential for various bodily functions, including energy production, cell metabolism, and maintaining healthy nerve function. A comprehensive B-complex supplement supports overall cellular health and can help convert food into energy. They work synergistically to support various physiological processes.
B vitamins act as coenzymes in numerous metabolic pathways that convert carbohydrates, fats, and proteins into usable energy. Thiamine, Riboflavin, Niacin, Pantothenic Acid, and Biotin are particularly involved in these critical processes. This support helps maintain energy levels throughout the day.
Folate (Vitamin B9) and Vitamin B12 are interdependent and crucial for red blood cell formation and neurological function. They work together in the metabolism of homocysteine and the synthesis of DNA and RNA. Their combined action supports healthy nerve cells and genetic material.
Both Niacin and Niacinamide are forms of Vitamin B3 and serve as precursors to coenzymes involved in energy metabolism. Niacin (nicotinic acid) can cause a temporary "flush" sensation at higher doses, which Niacinamide typically does not. Niacinamide is often preferred for general supplementation due to its better tolerance, while Niacin may be used for specific physiological effects under guidance.
Vitamin B6 (Pyridoxine) is vital for neurotransmitter synthesis, which are chemicals that carry signals between brain cells. It also plays a role in myelin formation, which protects nerve fibers. This contributes to maintaining normal brain function and nervous system health.
schedule Dosage, timing & forms
Many people prefer to take B vitamins in the morning, often with food, to help support energy metabolism throughout the day. Consistency in taking the supplement is generally more important than the exact timing for water-soluble vitamins. Taking them with a meal can help minimize stomach upset.
Taking B vitamins with food can enhance their absorption and reduce the likelihood of stomach discomfort that some individuals might experience. Food can also help buffer the stomach, making the supplement easier to digest. This approach is widely recommended for most water-soluble vitamins.
The bright yellow color of urine after taking a B-complex supplement is primarily due to riboflavin (Vitamin B2), which has a naturally fluorescent yellow pigment. Since B vitamins are water-soluble, excess amounts that the body doesn't immediately use are excreted through urine. This is a common and harmless effect.
Yes, very high doses of biotin can interfere with certain lab tests, particularly those that use biotin-streptavidin technology. This interference can lead to falsely high or low results, affecting diagnostic accuracy. It is advisable to inform your doctor about any biotin supplementation before laboratory tests.
Folate is the naturally occurring form found in foods, while folic acid is the synthetic form commonly used in fortified foods and many supplements. Some individuals may have genetic variations that affect their ability to efficiently convert folic acid into its active form. Supplements may also contain L-methylfolate, which is an already active form.
health_and_safety Safety & interactions
Yes, Niacin, a form of Vitamin B3 present in some supplements, can cause a temporary skin flush, itching, or tingling sensation, particularly when taken in higher doses. This reaction, known as the 'niacin flush,' is generally harmless and usually subsides as the body adjusts. Niacinamide, another common form of Vitamin B3, typically does not cause this effect.
The bright yellow color of urine after taking a B-complex supplement is primarily due to Riboflavin (Vitamin B2), which has a naturally vibrant yellow pigment. Since B vitamins are water-soluble, excess amounts that the body does not use are safely excreted through the urine. This is a normal and harmless physiological effect.
While generally safe at recommended levels, very high doses of Vitamin B6 (pyridoxine) taken over a long period can potentially lead to peripheral neuropathy. This condition is characterized by numbness, tingling, and nerve damage in the extremities. Such adverse effects are typically associated with intakes significantly exceeding the established upper tolerable limit.
Yes, certain B vitamins can interact with specific prescription medications. For example, Vitamin B6 can interfere with some anti-seizure drugs, and folate can interact with certain anticancer drugs or anticonvulsants. It is important to discuss all supplements with a healthcare provider, especially if taking prescription medications, to avoid potential interactions.
Yes, PABA (Para-Aminobenzoic Acid) may interact with sulfonamide antibiotics. PABA is structurally similar to a substance essential for bacterial growth, and its presence can reduce the effectiveness of these antibiotics. It is generally recommended to avoid PABA supplements if taking sulfa drugs.
Ingredients
| Ingredient | Amount per serving |
|---|---|
Thiamine | 100 mg |
Riboflavin | 100 mg |
Niacin | 100 mg |
Vitamin B6 | 100 mg |
Folate | 680 mcg DFE |
Vitamin B12 | 100 mcg |
Biotin | 100 mcg |
Pantothenic Acid | 100 mg |
Choline | 10 mg |
Inositol | 10 mg |
PABA | 10 mg |
Categories
Niacin 88.0
With 100mg of Niacin, including both Vitamin B3 and Niacinamide, this product offers a robust dose for energy metabolism and cellular repair, effectively supporting general health without causing a significant flush.
Thiamin 88.0
Providing 100mg of Thiamine (Vitamin B1) across two forms, this complex ensures substantial support for carbohydrate metabolism and nervous system health, which is a key component of a high-potency B-complex.
Riboflavin 88.0
The 100mg of Riboflavin (Vitamin B2) ensures strong support for cellular energy production and antioxidant activity. This high dosage is a hallmark of comprehensive B-100 complexes.
Goals
Energy 90.0
The higher 100mg potency of essential B vitamins directly translates to more robust support for energy production, effectively aiding in the conversion of food to energy. This makes it highly effective for boosting energy.
Metabolism Boost 90.0
The 100mg potency across most B vitamins provides maximal support for metabolic processes, ensuring efficient breakdown of macronutrients and energy production, thus giving a significant metabolism boost.
General Health 85.0
This high-potency B-complex provides a robust foundation for overall health, ensuring adequate intake of essential B vitamins for a wide range of physiological functions, promoting general well-being.
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