Free Shipping on Orders $40+
Thorne Research

Thorne Research Stress B-Complex Capsules

$2600

Pickup available at Fitchburg

Usually ready in 4 hours

60 capsules

Feeling foggy, drained, or just not quite yourself? Your body could be asking for B vitamins. Thorne Stress B-Complex delivers a full-spectrum blend — with an extra boost of B5 — to help power your day, help with everyday stress, and keep your mind and mood feeling clear.*

  • 250 mg of pantothenic acid (B5) to fuel adrenal and stress response systems*
  • Helps support healthy cortisol balance already within the normal range for steadier energy and mood.*
  • Promotes healthy nervous system, heart, immune, and digestive function*
  • Good for clarity, calm focus, and a balanced mental outlook*
  • Formulated for resilience in high-stress, fast-paced lifestyles*
  • Clean, non-GMO ingredients — no unnecessary additives
View Supplement Facts

Thorne Research Stress B-Complex Capsules


When stress starts to pile up, your body’s B-vitamin stores can get used up fast. Thorne Research Stress B-Complex delivers comprehensive nutritional support with all eight essential B vitamins — plus vitamin B5 to nourish adrenal function, energy production, and overall balance.*


This complete formula fuels your metabolism, helps maintain a healthy stress response*, and promotes steady energy throughout the day.* Each capsule is designed to replenish what stress can use up so you can stay calm, focused, and resilient no matter what the day throws your way.*



  • 250 mg of pantothenic acid (vitamin B5)*

  • Supports adrenal function and energy production*

  • Promotes healthy stress management*

  • Helps convert food into fuel for your body*

  • Maintains immune, heart, and nervous system health*


Comprehensive Nutrition for Everyday Balance


Want to hear something wild? Your body relies on B vitamins for essential daily functions, but it can’t store what you ingest for later use. That means that if you use up what you have on hand, you’re out.*


Thorne Research Stress B-Complex helps keep your vitamin B stores replenished with some of the most bioavailable forms of B1 (thiamin), B2 (riboflavin), B3 (niacinamide), B5 (pantothenic acid), B6 (pyridoxine HCL), B7 (biotin), B9 (folate), and B12 (methylcobalamin). Together, these nutrients support mood, metabolism, and healthy nerve function.*



  • Encourages balanced mood and focus*

  • Supports optimal adrenal activity*

  • Promotes nutrient metabolism and energy creation*

  • Provides complete B-vitamin coverage for daily wellness*


The Thorne Research Difference


Thorne Research is known for purity, potency, and professional-grade formulations. Their mission is to empower others to live healthier and longer through personalized wellness solutions and careful formulation.*


The brand’s Stress B-Complex contains 250 mg of vitamin B5 — a vital nutrient for adrenal function — and uses active, highly absorbable B-vitamin forms for maximum benefit. It’s exactly the kind of high-quality supplement you’d expect from a brand as highly praised as Thorne. Their products are tested for quality, purity, and label accuracy, and are formulated with high-quality ingredients.*



  • Clean, high-quality ingredients

  • Free from gluten, soy, and dairy

  • Formulated based on scientific literature and tested by third parties for quality and purity.*


Start to Feel Balanced & Energized Again With Thorne Stress B-Complex


You don’t need to let stress drain your energy or test your mood! Instead, let Thorne Stress B-Complex Capsules help. Add this supplement to your wellness routine today to support daily energy and stress resilience over time.*


Do you have questions about how this supplement might interact with your existing medications or the vitamins and minerals you take already? We have answers! Our Certified Wellness Consultants are here to help you find the right supplements for your stress response, adrenal balance, and everyday vitality so you can feel your best, inside and out. Reach out today for personalized support!*



Reviewed for accuracy by our licensed clinical team — doctors, nurse practitioners, and functional medicine specialists at The Healthy Place Clinic in Madison, WI.


Suggested Use: Take 1 capsule one to three times daily or as recommended by your health professional.

Cautions: Keep out of the reach of children. Consult a physician before taking this product if you are pregnant, nursing, taking any medications, or have a medical condition. 5-methyltetrahydrofolate (5-MTHF) supplementation is not recommended concurrent with methotrexate cancer therapy, as it can interfere with methotrexate's anti-neoplastic activity; however, this folate source 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.

Allergy Warning: This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.

Questions? We’ve got answers! Reach out to our support team for help.
Serving Size: 1 Capsule

Servings Per Container: 60

Ingredients:

  • Thiamin (As Thiamin HCl)

  • Riboflavin (25 mg As Riboflavin And 3.6 mg As Riboflavin 5'-Phosphate Sodium)

  • Niacin (As Niacinamide)

  • Vitamin B6 (25 mg As Pyridoxine HCl And 3.4 mg As Pyridoxal 5'-Phosphate)

  • Folate (200 mcg As L-5-Methyltetrahydrofolate† From L-5 Methyltetrahydrofolic Acid, Glucosamine Salt)

  • Vitamin B12 (As Methylcobalamin)

  • Biotin

  • Pantothenic Acid (As Calcium Pantothenate)

  • Choline (As Choline Citrate)

Other Ingredients: Hypromellose (Derived From Cellulose) Capsule, Microcrystalline Cellulose, Calcium Laurate, Silicon Dioxide

FAQs About Thorne Research Stress B-Complex Capsules

Q: How is this B-complex different from a basic one? A: The main difference is the extra pantothenic acid. This gives you 250 mg of B5 per capsule, plus active forms like methylcobalamin for B12 and 5-MTHF for folate.

Q: Does this help with feeling tired and run-down? A: A lot of people take it for that. It has B vitamins like 50 mg thiamin, 28.6 mg riboflavin, 80 mg niacinamide, and 100 mcg B12 to support energy metabolism when you're feeling run-down.

Q: Should I take it in the morning or at night? A: Morning is usually best. B vitamins can feel a little energizing for some people, so I'd take 1 capsule with breakfast. Only add more later in the day if your practitioner wants you on 2 or 3.

Q: Why does this one use 5-MTHF and methylcobalamin? A: Those are the active forms of folate and B12. Some people specifically look for 5-MTHF at 334 mcg DFE and methylcobalamin at 100 mcg because they do better with those forms than with the cheaper standard ones.

Q: Will this make my urine bright yellow? A: Yep. That's usually from the riboflavin. This one has 28.6 mg, so bright yellow urine is pretty common and usually not a problem.

Q: My doctor said to be careful with folate. Is there anything here I should know? A: Yes. This one uses methylfolate, so if you're on methotrexate cancer therapy, check with your doctor before using it. If you're pregnant, nursing, or taking medications, talk to your OB, midwife, doctor, or pharmacist before starting this one.

At The Healthy Place, we strive for accuracy in our product images and information. However, manufacturers may make changes to product packaging or ingredients that are not yet reflected on our site. We recommend that you read the labels, warnings, and directions on purchased products before use and not rely solely on the information provided by The Healthy Place.

Our Locations