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Energy metabolism, nervous system support, red blood cell formation, cognitive support
Adults with busy, high-demand schedules or those with low dietary intake of B vitamins seeking everyday energy metabolism support.
Take 1 capsule one to three times daily, preferably with meals; B vitamins are often well tolerated with food.
Gluten-free; Manufactured in a facility using US and imported ingredients; Capsule contains hypromellose; Contains no listed major allergens.
Pantothenic acid forms part of coenzyme A, which is central to fatty acid metabolism and cellular energy production.
Caution: High amounts may occasionally cause mild digestive upset; take with food if sensitive.
Niacinamide supports energy metabolism by acting as a precursor for NAD+, a cofactor in redox reactions.
Caution: May cause mild digestive discomfort in some people; niacinamide form typically does not cause flushing.
Thiamin is converted to thiamin pyrophosphate, a coenzyme for enzymes that help convert carbohydrates into energy.
Caution: Very high intakes are generally well tolerated but can occasionally cause stomach upset.
Vitamin B6 acts as a coenzyme in amino acid metabolism and neurotransmitter synthesis.
Caution: Extended high-dose use may affect nerve function; follow suggested use.
Methylfolate provides an active folate form used in one‑carbon metabolism for methylation and red blood cell formation.
Caution: Consult a healthcare professional before combining with high-dose vitamin B12 or if using certain medications.
B vitamins act as coenzymes across energy pathways: thiamin, riboflavin, niacinamide and B6 support carbohydrate, fat and protein metabolism to produce ATP. Pantothenic acid feeds coenzyme A production, while methylfolate and methylcobalamin provide active methyl donors for red blood cell formation and methylation. Choline contributes to methyl group metabolism and nervous system function, rounding out the complex.
Label Warning: Use only if the bottle is sealed. If pregnant, consult a healthcare practitioner before use.
Who should be cautious: People with vitamin B sensitivity, niacin flush sensitivity, or on complex supplement regimens may wish to discuss dosing with a healthcare provider.
Storage: Store tightly sealed in a cool, dry place.
This product is guaranteed authentic and backed by our easy returns and 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.
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Thorne’s Stress B-Complex is an essential choice for individuals seeking nutritional support for an overstressed lifestyle. The nutrients in Stress B-Complex work synergistically throughout the body to promote cellular energy production, healthy red blood cell formation, cognitive function and mood. The extra vitamin B5 (pantothenic acid), an important nutrient for healthy adrenal, nervous system and immune function, complements the optimal balance of eight essential B vitamins plus choline.
Take 1 capsule one to three times daily or as advised by your healthcare practitioner.
Hypromellose (derived from cellulose) capsule, microcrystalline cellulose, calcium laurate, silicon dioxide
Manufactured in the USA using US and imported ingredients.
Tamper evident: Use only if the bottle is sealed.
Store tightly sealed in a cool, dry place.
If pregnant, consult your healthcare practitioner before using this product.
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 be despatched with alternative packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and do not rely solely on the information provided by iHerb. This website has been machine translated as a courtesy to customers. iHerb does not represent or warrant that the translations are complete or error-free and iHerb is not responsible for any translation errors or omissions.
| Supplement facts | ||
| Serving Size: One Capsule | ||
| One Capsule Contains: | %DV | |
| Thiamin (as Thiamin HCl) | 50 mg | 4,167% |
| Riboflavin (25 mg as Riboflavin and 3.6 mg as Riboflavin 5'-Phosphate Sodium) | 28.6 mg | 2,200% |
| Niacin (as Niacinamide) | 80 mg | 500% |
| Vitamin B6 (25 mg as Pyridoxine HCl and 3.4 mg as Pyridoxal 5'-Phosphate) | 28.4 mg | 1,671% |
| Folate (200 mcg as L-5-Methyltetrahydrofolate† from L-5 Methyltetrahydrofolic Acid, Glucosamine Salt) | 334 mcg DFE | 84% |
| Vitamin B12 (as Methylcobalamin) | 100 mcg | 4,167% |
| Biotin | 80 mcg | 267% |
| Pantothenic Acid (as Calcium Pantothenate) | 250 mg | 5,000% |
| Choline (as Choline Citrate) | 14 mg | 3% |
| Daily Value (DV). †This product uses Gnosis S.p.A.'s L-5-Methyltetrahydrofolic Acid, Glucosamine Salt (Quatrefolic®). | ||
