Thorne Basic B Complex – Active Coenzyme B Vitamins | Supports Energy, Brain & Cardiovascular Health, 60 Capsules

What Is Thorne Basic B Complex?

Thorne Basic B Complex is a comprehensive, full-spectrum B vitamin formula featuring all essential B vitamins in their most bioavailable, active coenzyme forms — the forms the body can use directly without requiring enzymatic conversion. Unlike standard B-complex supplements that use synthetic, non-activated forms (such as folic acid and cyanocobalamin), Thorne’s Basic B Complex uses 5-MTHF (methylfolate) and methylcobalamin, making it effective even for individuals with the MTHFR gene variant who cannot efficiently process synthetic B vitamins. Formulated without unnecessary excipients and NSF Certified for Sport®, this is the B-complex trusted by healthcare practitioners and elite athletes worldwide.

The Active B Vitamins & What They Do

• Vitamin B1 (Thiamine HCl) — Essential coenzyme in carbohydrate metabolism and ATP production; critical for healthy nerve conduction and cardiac function
• Vitamin B2 (Riboflavin 5’-Phosphate) — Active coenzyme form (FMN); essential for the electron transport chain, mitochondrial energy production, and glutathione recycling (antioxidant defense)
• Vitamin B3 (Niacinamide) — Precursor to NAD+ and NADP+; involved in over 400 enzymatic reactions including cellular energy, DNA repair, and fatty acid synthesis; supports healthy cholesterol levels
• Vitamin B5 (Pantothenic Acid) — Required for Coenzyme A (CoA) synthesis, which drives the Krebs cycle and fatty acid oxidation; supports adrenal hormone production and stress resilience
• Vitamin B6 (Pyridoxal 5’-Phosphate, P-5-P) — Active coenzyme form; involved in 100+ enzyme reactions including amino acid metabolism, neurotransmitter synthesis (serotonin, dopamine, GABA), and hemoglobin production
• Vitamin B7 (Biotin) — Coenzyme for fatty acid synthesis, amino acid catabolism, and gluconeogenesis; supports healthy hair, skin, and nail growth via keratin production
• Vitamin B9 (5-MTHF, L-5-Methyltetrahydrofolate) — Active methylfolate that bypasses the MTHFR enzyme step; essential for DNA synthesis, methylation, red blood cell production, and fetal neural tube development; critical for individuals with MTHFR gene variants
• Vitamin B12 (Methylcobalamin) — Active form; essential for neurological function, myelin sheath maintenance, red blood cell formation, DNA synthesis, and homocysteine metabolism; superior to cyanocobalamin for brain and nerve health

Key Benefits of Thorne Basic B Complex

• Cellular Energy Production — Every B vitamin is a direct coenzyme in mitochondrial energy pathways — converting carbohydrates, fats, and proteins into ATP. B-complex deficiency is a primary driver of chronic fatigue, low energy, and brain fog
• Brain Health & Cognitive Function — B6, B9 (methylfolate), and B12 (methylcobalamin) are critical for methylation, neurotransmitter synthesis, homocysteine regulation, and myelin sheath integrity — all essential for sharp cognition, memory, and mental performance
• Mood & Stress Resilience — B vitamins are essential cofactors for serotonin, dopamine, norepinephrine, and GABA synthesis. Deficiency in B6, B9, or B12 is strongly associated with low mood, anxiety, and poor stress tolerance
• Cardiovascular Health & Homocysteine Regulation — B6, methylfolate, and methylcobalamin work in concert to regulate homocysteine — an amino acid that, when elevated, is an independent risk factor for heart disease, stroke, and cognitive decline
• MTHFR Support with Active Methylfolate — An estimated 40–60% of the population carries MTHFR gene variants that reduce the ability to convert folic acid to active methylfolate. Thorne’s use of 5-MTHF ensures effective folate delivery regardless of genetic status
• NSF Certified for Sport® — Every batch tested for banned substances, making this suitable for professional and competitive athletes

Who Should Take This?

• Individuals with MTHFR gene variants who cannot efficiently process folic acid or cyanocobalamin
• Vegans and vegetarians with elevated risk of B12 and B2 deficiency
• Anyone experiencing chronic fatigue, brain fog, or low energy
• Those supporting mood, cognitive performance, and stress resilience
• Competitive athletes requiring NSF Certified for Sport® verified supplements
• Individuals supporting cardiovascular health through homocysteine management
• Anyone seeking a clean, pharmaceutical-grade B-complex from a practitioner-trusted brand

How to Use

Take 1 capsule daily with a meal, or as directed by your healthcare practitioner. Some individuals benefit from taking 2 capsules daily for higher-intensity support. Taking with food reduces the risk of mild nausea that can occur with high-dose B vitamins on an empty stomach. Niacin (B3) in niacinamide form avoids the flushing reaction associated with nicotinic acid.

Product Highlights

• All 8 Essential B Vitamins in active coenzyme forms
• 5-MTHF (Methylfolate) — bypasses MTHFR for effective folate delivery
• Methylcobalamin B12 — superior neurological and cardiovascular support
• Pyridoxal 5’-Phosphate (P-5-P) — active B6 for direct enzymatic use
• Riboflavin 5’-Phosphate — active B2 coenzyme form
• 60 Capsules — 60-day supply at 1 capsule/day
• NSF Certified for Sport® | No unnecessary excipients
• From Thorne — trusted by healthcare practitioners worldwide