Thorne Research

Stress B-Complex

$26.00

SIZE: 60 Capsules

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The Promise

Product identity and composition Complete, active-form B-complex in a vegetarian capsule

Thorne Stress B-Complex supplies a full spectrum of B vitamins with enhanced pantothenic acid and tissue‑ready vitamin forms in a hypromellose capsule.

Primary identity

Stress B-Complex — comprehensive B-vitamin formula from Thorne Research, 60 capsules per bottle.

Principal ingredients & forms

Includes Thiamin HCl, Riboflavin + Riboflavin‑5′‑phosphate, Niacinamide, Pyridoxine HCl + Pyridoxal‑5′‑phosphate, L‑5‑MTHF folate, Methylcobalamin (B12), Biotin, Pantothenic acid (Calcium pantothenate), and Choline citrate.

Enhanced pantothenic acid

Provides 250 mg pantothenic acid (Calcium pantothenate) — a concentrated level intended for adrenal support.*

Formulation & delivery

One‑capsule servings in a hypromellose (cellulose‑derived) vegetarian capsule; excipients: microcrystalline cellulose, calcium laurate, silicon dioxide.

Why It Works

Distinct formulation details Quantities, active forms, and targeted composition

Specific vitamin amounts and bioactive forms support immediate tissue availability and concentrated pantothenic acid.*

01

Measured potencies

Thiamin 50 mg; Niacin (as niacinamide) 80 mg; Biotin 80 mcg; B12 (methylcobalamin) 100 mcg per capsule.

02

Active, tissue‑ready B forms

Contains Riboflavin‑5′‑phosphate (3.6 mg), Pyridoxal‑5′‑phosphate (3.4 mg), L‑5‑MTHF folate (200 mcg), and methylcobalamin B12 for direct tissue use.

03

High B5 concentration

Pantothenic acid provided at 250 mg (5,000% DV) to deliver an enhanced dose compared with standard B‑complexes.

04

Serving size and supply

Serving size: one capsule. Servings per container: 60. Suggested use: 1 capsule one to three times daily or as directed by a health‑care practitioner.

Reviews

Customer Reviews

Your Journey

How to use, store, and safety notes Practical directions, contraindications, and interaction guidance

Follow labeled dosing, heed allergy and pregnancy precautions, and note folate interaction with methotrexate cancer therapy.

Directions

Dosing

Take 1 capsule one to three times daily or as recommended by your health‑care practitioner.

Format & handling

Capsule format

Delivered in a hypromellose (cellulose‑derived) vegetarian capsule; contains microcrystalline cellulose, calcium laurate, and silicon dioxide.

Warnings

Allergy & pregnancy

Contraindicated for individuals with hypersensitivity to any ingredient. If pregnant, consult your health‑care practitioner before use.

Drug interaction

Folate (5‑MTHF) and methotrexate

5‑MTHF supplementation is not recommended concurrently with methotrexate cancer therapy (may interfere with anti‑neoplastic activity); supplementation has not been shown to interfere with methotrexate's anti‑inflammatory activity, and individuals taking methotrexate for psoriasis or rheumatoid arthritis can safely take a supplement containing folate.

Product education

Stress B-Complex: A Foundational Formula for Stress and Adrenal Support*

Thorne’s Stress B-Complex is a comprehensive vitamin B supplement specifically formulated to support a healthy response to stress. This formula provides a full spectrum of B vitamins, with an extra amount of vitamin B5, which is crucial for healthy adrenal gland function. Periods of high stress can deplete B vitamin levels, impacting energy and mood. Therefore, replenishing these essential nutrients is foundational for maintaining resilience and vitality.*

How It Works: Fueling the Adrenals and Nervous System

This B-complex works by providing the active, tissue-ready forms of key B vitamins. This ensures your body can use them immediately, which is especially important for individuals with certain genetic variations.

Support for a Healthy Stress Response
Vitamin B5, or pantothenic acid, is concentrated in the adrenal glands. It is a vital component for producing the hormones that help the body respond to stress. This formula provides an enhanced dose of B5 to specifically nourish the adrenals. In addition, the other B vitamins support the production of neurotransmitters, which helps to promote a balanced mood and calm the nervous system.*

Enhancing Cellular Energy
B vitamins are essential cofactors in the Krebs cycle, the body’s primary process for generating cellular energy (ATP). By providing a complete profile of these nutrients, Stress B-Complex helps to optimize energy production. This combats the fatigue that often accompanies periods of high stress, supporting both mental and physical endurance.*

  • Formulated to support a healthy response to stress*
  • Contains an enhanced level of Vitamin B5 for adrenal support*
  • Features active, bioavailable forms of key B vitamins*
  • Promotes healthy neurological function and a balanced mood*
  • Supports cellular energy production to combat fatigue*

Supplement record

Review serving details and ingredients for this product.

Supplement Facts:
Suggested Use: Take 1 capsule one to three times daily or as recommended by your health-care practitioner.
Serving Size: One Capsule
Servings Per Container: 60
Ingredient Amount %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%
Other ingredients: Hypromellose (derived from cellulose) capsule, Microcrystalline Cellulose, Calcium Laurate, Silicon Dioxide.
*Daily Value (DV) not established.
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.
PREGNANCY If pregnant, consult your health-care practitioner before using this product.
INTERACTIONS 5-methyltetrahydrofolate (5-MTHF) supplementation is not recommended concurrently with methotrexate cancer therapy, as it can interfere with methotrexate's anti-neoplastic activity; however, 5-MTHF has not been shown to interfere with the anti-inflammatory activity of methotrexate. An individual taking methotrexate for psoriasis or rheumatoid arthritis can safely take a supplement containing folate.