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Energy metabolism, nervous system support, red blood cell formation, cognitive support, mood support
Adults with busy, high-demand schedules or those with low dietary intake of B vitamins seeking daily energy metabolism support.
Take 1 capsule one to three times daily, preferably with meals to enhance tolerance.
Gluten Free
Pantothenic acid is a precursor of coenzyme A, which helps convert carbohydrates, fats, and proteins into cellular energy and supports adrenal hormone synthesis.
Caution: High doses may cause mild digestive discomfort; take with food if sensitive.
Niacinamide supports energy metabolism by acting as a precursor to NAD+/NADH, which are required for cellular redox reactions.
Caution: Niacinamide typically does not cause flushing, but large amounts may cause nausea in sensitive individuals.
Vitamin B6 functions as a cofactor for enzymes involved in neurotransmitter synthesis and amino acid metabolism.
Caution: Excessive long-term intake may be associated with nerve tingling; do not exceed suggested use unless guided.
L-5-Methyltetrahydrofolate is the bioactive form that supports one-carbon metabolism for DNA synthesis and methylation.
Caution: If using high-dose folate or methylated B vitamins for specific needs, consult a professional to avoid imbalanced intake.
Methylcobalamin supports methylation and red blood cell formation by acting as a cofactor in homocysteine and nucleotide pathways.
Caution: Very high intakes may cause mild restlessness in some people; consider morning use if sensitive to energy changes.
Higher-dose pantothenic acid supports adrenal and energy-related pathways, while niacinamide, B6, folate, and methylcobalamin provide cofactors for redox reactions, methylation, and neurotransmitter synthesis. Together they help the body convert nutrients into usable energy and support nervous system function during busy days.
Label Warning: If pregnant, consult your health-care practitioner before use.
Who should be cautious: People with a known allergy or sensitivity to B vitamins or choline may need caution. High-dose biotin may interfere with certain lab tests; consider pausing before lab work and inform your clinician.
Storage: Store tightly sealed in a cool, dry place.
Customers like the capsule size and report it goes down smoothly.
Many mention feeling more balanced energy and overall well-being after use.
A few users noticed a unique odor that made swallowing less comfortable.
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.
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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 recommended by your health-care practitioner.
Hypromellose (derived from cellulose) capsule, microcrystalline cellulose, calcium laurate, silicon dioxide.
Manufactured in the USA using US & imported ingredients.
Tamper Evident: Use only if bottle is sealed.
Store tightly sealed in a cool, dry place.
If pregnant, consult your health-care 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 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: 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'-Phospate 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®). | ||
