Thank you!
Your email is being processed.
You purchased this item on
View this order
Energy metabolism support; Nervous system support; Homocysteine metabolism
Adults with busy schedules who want daily energy metabolism support or people with low intake of B-vitamin–rich foods such as meat, dairy, and whole grains.
Take 1 tablet daily with a meal; taking B-complex with food may improve tolerance and, because it is sustained release, avoid taking close to bedtime if you are sensitive to energizing supplements.
Non-GMO; Vegetarian/Vegan; Kosher; Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut, or sesame ingredients; Produced in a GMP facility that processes other allergens.
Niacinamide acts as a precursor to NAD+/NADH, which helps enzymes convert food into cellular energy.
Caution: High-dose niacin forms may cause flushing or digestive discomfort in some people; take with food to reduce stomach upset.
Vitamin B-6 is a cofactor in amino acid metabolism and neurotransmitter synthesis, which may support energy metabolism and nervous system function.
Caution: Very high intakes over time may cause tingling or numbness; follow label directions.
Thiamin forms thiamin pyrophosphate, a coenzyme that helps convert carbohydrates into energy in the Krebs cycle.
Caution: Alcohol use and some medications can affect thiamin status; consistent daily intake may be helpful.
Riboflavin supports redox reactions as FAD and FMN coenzymes, aiding energy production and antioxidant enzyme function.
Caution: May color urine bright yellow due to riboflavin’s natural pigments; this is expected.
Folate supports one‑carbon metabolism for DNA synthesis and methylation, which is involved in homocysteine metabolism.
Caution: High folic acid can mask signs of low vitamin B-12; adequate B-12 intake is important, especially for vegetarians.
Core B-vitamins like thiamin, riboflavin, niacin, and B-6 act as enzyme cofactors that help convert carbohydrates, fats, and proteins into usable cellular energy. Folate contributes methyl groups for homocysteine metabolism, complementing B-6 and B-12 pathways for balanced one‑carbon metabolism.
Label Warning: For adults only. Consult a physician if pregnant or nursing, taking medication, or have a medical condition. Contains biotin, which may interfere with some blood test results. Natural color variation may occur. This product is designed for extended release.
Who should be cautious: People who need regular lab tests that include thyroid or cardiac markers may want to confirm timing due to biotin-related test interference. Those sensitive to niacin may experience flushing. If taking medications, discuss with a healthcare provider before use.
Storage: Store in a cool, dry place after opening.
Many users mention increased energy and improved well-being after taking the sustained-release B-complex.
Customers find the tablets manageable to take despite the high-potency formula.
Some reviews note softening, disintegration, or an unpleasant smell when stored in warmer conditions over time.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
Magnesium and B vitamins may support energy production and reduce fatigue, promoting overall vitality and well-being.
AI generated. Not medical advice.
Sorry, there was a problem adding this item to cart. Please refresh the page and try again.
B-100 Tabs provide a full complement of B-Vitamins plus Choline and Inositol. These vitamins work to support energy production, maintain healthy homocysteine metabolism, and promote the health of the nervous system. B-Vitamins are water soluble, and with the exception of B-12, have limited storage in the body and thus require daily replenishment. While B-12 is stored in the liver, dietary sources are of animal origin only (meat and dairy) and supplementation with B-12 may be especially important for vegetarians.
Take 1 tablet daily with a meal.
Hypromellose (cellulose), microcrystalline cellulose stearic acid (vegetable source), vegetarian coating and silicon dioxide.
Made and quality tested in the USA with globally sourced ingredients.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish tree nut or sesame ingredients.
Produced in a GMP facility that processes other ingredients containing these allergens.
For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children. This product contains Biotin which may interfere with some blood test results.
Natural color variation may occur in this product.
Store in a cool, dry place after opening.
This product is designed to release over an extended period of time.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||
| Serving Size: 1 Tablet | ||
| Amount Per Serving | %Daily Value | |
| Thiamin (from Thiamin HCl) (Vitamin B-1) | 100 mg | 8333% |
| Riboflavin (Vitamin B-2) | 100 mg | 7692% |
| Niacin (Vitamin B-3) (as Niacinamide) | 100 mg | 625% |
| Vitamin B-6 (from Pyridoxine HCl) | 100 mg | 5882% |
| Folate | 680 mcg DFE (400 mcg folic acid) | 170% |
| Vitamin B-12 (as Cyanocobalamin) | 100 mcg | 4167% |
| Biotin | 100 mcg | 333% |
| Pantothenic Acid (from Calcium Pantothenate) | 100 mg | 2000% |
| Choline (from Choline Bitartrate) | 35 mg | 6% |
| Inositol | 100 mg | † |
| PABA (Para-Aminobenzoic Acid) | 10 mg | † |
| † Daily Value not established. | ||
