Fully Active B Complex with Quatrefolic – Energy Metabolism, Balanced Nervous System, Proper Methylation & Cognitive Performance

Fully Active B Complex with Quatrefolic, Doctor's Best, brings together "active" forms and easily usable forms of B complex vitamins, for broad-spectrum support: cellular energy, mental clarity, stress resilience, healthy skin/hair/nails, and cardiovascular protection through efficient methylation. The formula includes Quatrefolic® ((6S)-5-methyltetrahydrofolic acid, glucosamine salt) – a form of directly usable folate by the body –, vitamin B12 as methylcobalamin (1,000 mcg), vitamin B6 in pyridoxine HCl + pyridoxal-5-phosphate forms (P-5-P), riboflavin + riboflavin-5-phosphate (R-5-P), niacinamide + niacin, thiamine HCl, pantothenic acid, biotin, and a useful addition of vitamin C (40 mg) for the antioxidant network. High dosages and active cofactors are designed to support efficient conversion of nutrients into ATP, neurotransmitter synthesis, maintaining homocysteine in optimal range, and tissue integrity.

Detailed Benefits of Fully Active B Complex with Quatrefolic

• Supporting Optimal Cellular Energy Levels

Vitamins B-1, B-2 (R-5-P), B-3, B-5, and B-6 (P-5-P) act as pivot coenzymes in glycolysis, Krebs cycle, and respiratory chain.
✅ Conversion of carbohydrates, fats, and proteins into ATP
✅ Stable daily vitality and reduced feeling of fatigue
✅ Metabolic performance during demanding periods

• Nervous System and Cognitive Performance

B-1 supports neuronal glucose utilization, B-6 (P-5-P) participates in GABA, serotonin, and dopamine synthesis, while methylcobalamin B-12 supports myelination.

✅ Concentration, working memory, and mental clarity
✅ Mood balance through properly synthesized neurotransmitters
✅ Neurological comfort in intense work rhythm

• Methylation, Homocysteine & Cardiovascular Health

The triad of active folate (Quatrefolic®) + methylcobalamin B-12 + B-6 (P-5-P) supports methylation cycles.
✅ Maintaining homocysteine in physiological ranges
✅ Protection of endothelium and circulation
✅ Support for long-term cardiovascular balance

• Antioxidant Network with Vitamin C

Vitamin C (40 mg) integrates into the antioxidant network and supports regeneration of other antioxidants.
✅ Cell protection against oxidative stress
✅ Healthy collagen and connective tissue (skin, vessels, gums)
✅ Complementary support for immunity

• Skin, Hair & Nails – Beauty from Within

Biotin (600 mcg), niacin, and riboflavin support cutaneous lipid metabolism and cellular renewal.
✅ Even and luminous complexion
✅ Resistant hair and strong nails
✅ Skin barrier integrity against environmental factors

• Red Blood Cell Formation and Tissue Oxygenation

Methylcobalamin B-12, active folate, and B-6 contribute to erythropoiesis.
✅ Efficient oxygen transport
✅ Vitality and exercise endurance
✅ Mental clarity associated with good oxygenation

• Stress, Resilience & Neuroendocrine Balance

B-5 (100 mg) and B-6 support stress hormone synthesis and neurotransmitter regulation.
✅ Adaptation to fast-paced lifestyle
✅ Support for mental vitality during busy periods
✅ Reduction of "burnout" sensation

• Macronutrient Metabolism – "Gears" That Fit Together

— B-1: oxidative decarboxylation of carbohydrates
— B-2/R-5-P: cofactor in respiratory chain
— B-3: NAD/NADP for redox reactions
— B-5: CoA for fatty acids
— B-6/P-5-P: amino acid catabolism

✅ Metabolic efficiency from plate to ATP
✅ Body composition supported through optimal conversion
✅ Energy that's felt throughout the day

• Synergy of "Active" Forms for Rapid Utilization

Quatrefolic® bypasses folate metabolism limitations, P-5-P and R-5-P are already "ready" coenzyme forms.
✅ Superior bioavailability
✅ Consistency in results across varied dietary styles
✅ Fit with modern needs (irregular schedule, specific diets)

• Skin and Mucous Membranes – Comfort and Protection

Niacin, riboflavin, and vitamin C support epithelial barrier, while B-6 contributes to structural protein metabolism.
✅ Mucous membranes and skin with maintained integrity
✅ Comfort during seasonal changes
✅ Healthy and resilient appearance

• Mental Function and Emotional Balance

Methylcobalamin and P-5-P play a role in synthesizing central mediators of well-being.
✅ Sustained focus on long projects
✅ Better management of mood fluctuations
✅ Support for restful sleep through neurotransmitter balance

• Support for Athletes and Active Professionals

A complete B complex supports energy production, recovery, and counteracts exercise-induced oxidative stress.
✅ Performance in training and intellectual work
✅ More efficient post-effort recovery
✅ Long-term fatigue resistance

• Compatible with Modern Diets and Variable Intake

Low-carb diets, intermittent fasting, or schedules with infrequent meals can fluctuate B vitamin intake.
✅ Nutritional anchor on days with irregular eating
✅ Flexibility for diverse dietary styles
✅ Easy to integrate into a performance-oriented routine

• Why "Fully Active" Matters in Real Life

The specific difference of this formula is the focus on already metabolically activated forms, reducing dependence on enzymatic conversions that vary from person to person.

✅ Better consistency of perceived effects
✅ Fit with daily demands (work + sport + family)
✅ Integrated support: energy + nerves + heart + skin

Fully Active B Complex with Quatrefolic, Doctor's Best, offers a modern nutritional architecture, oriented toward bioactivity and results: energy that's felt, concentration, emotional balance, supported skin/hair/nails, and cardiovascular protection through proper methylation. The combination of active forms (Quatrefolic®, methylcobalamin, P-5-P, R-5-P) with robust dosages and vitamin C creates a complete platform for daily performance and well-being.





 

Directions for Use

Adult Use: Take 1 capsule daily with food or as recommended by a nutritionally informed physician.




 

Other Ingredients

Hypromellose (vegetarian capsule), microcrystalline cellulose, magnesium stearate (vegetable source), silicon dioxide.

Warnings

Do not exceed recommended dose. Consult a physician if you are hypersensitive to thiamine (vitamin B1), niacin, and vitamin B12. Discontinue use and consult a physician if an adverse reaction occurs. Keep out of reach of children.
Store in a cool, dry place.