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Doctor's Best   Fully Active B Complex with Quatrefolic® - 60 Veggie Capsules

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  • 4.6
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30 Reviews

"I get the niacin flush so I take a benedryl first. Make sure to take on a full s..."  Read all reviews

Item Number: DRB1275
Serving Size: 1 Capsule Servings per Container: 60
Price per Serving:  $0.32 Price per Unit*: $0.32 per Capsule
* Price Per Unit may reflect product's price per capsule, tablet, ounce, fluid ounce, etc.
49 In Stock.

This item will ship on Monday before 5PM EST.

Regular Price:  $29.99 $18.90
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Helps support energy production and cell metabolism!

Doctor’s Best Fully Active B Complex provides energy and helps coping with stress. B vitamins are needed to make energy from foods‚ and to make and maintain DNA‚ genes‚ cells‚ tissues‚ organs‚ and enzyme functions. B vitamins are fundamental to life‚ and humans cannot make them‚ therefore we need to get them through the diet. Doctor’s Best Fully Active B Complex provides only the best-utilized B vitamin forms. This includes fully active folate‚ the body’s most fully active folate and MTHF (methyl-tetra-hydro-folate). The Fully Active B Complex also provides fully active vitamin B12 as methylcobalamin (methyl-B12) to help ensure excellent oral absorption.



These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose‚ treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.

  • MFG # DRB-00501
  • UPC # 753950005013
Official Website: http://www.drbvitamins.com

Serving Size: 1 Veggie Capsule
Servings Per Container: 60

Amount Per Serving / % DV

Vitamin C (As Ascorbic Acid) 40mg / 45%
Vitamin B1 (From Thiamin HCI) 60mg / 5000%
Vitamin B2 (From Riboflavin and Riboflavin-5-Phosphate) 75mg / 5770%
Vitamin B3 (As Niacinamide and Niacin) 50mg / 310%
Vitamin B6 (From Pyridoxine HCI and Pyridoxal-5-Phosphate) 50mg / 2940%
Folate 400mcg DFE** / 100%
(From Quatrefolic® (6S)-5-Methyltetrahydrofolic acid‚ glucosamine salt)
Vitamin B12 (As Methylcobalamin) 1000mcg / 41670%
Biotin 600mcg / 2000%
Pantothenic Acid (From D-Calcium Pantothenate) 100mg / 2000%

**DFE = Dietary Folate Equivalent.

Other Ingredients: Modified cellulose (vegetarian capsule)‚ microcrystalline cellulose‚ magnesium stearate (vegetable source)‚ silicon dioxide.

Non-GMO / Gluten-Free / Soy-Free / Vegan / Vegetarian.


Adults‚ take 1 capsule daily with food‚ or as recommended by a nutritionally informed physician.


Store in a cool‚ dry place.


  • Dairy Free
  • Gluten Free
  • GMO Free
  • Soy Free
  • Vegan
  • Vegetarian

Ratings and Reviews

Write a Review
  • 4.6
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5 30
  • 30 Reviews
    • Verified Buyer

      Strong

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      from Okla on 4/05/2021
      I get the niacin flush so I take a benedryl first. Make sure to take on a full stomach.

      Pros

      Strong

      Cons

      Don’t smell good but I think that’s natural
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Best Value,BEST quality

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      from Barboursville VA on 11/27/2020
      We have to have the "active" forms of B-6,B-12 and folate and THIS formula has all 3! It has the best price compared to other high quality brands.

      Pros

      EVERYTHING!

      Cons

      Is often out of stock, understandably SO!
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Good all around b complex

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      from Md on 9/20/2020
      Not really feel difference but getting all b vitamins

      Pros

      Cons

      N/A 
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Good all around b complex

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      from Md on 9/20/2020
      Not really feel difference but getting all b vitamins

      Pros

      Cons

      N/A 
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Can’t live without it!

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      from Irondale, AL on 3/08/2020
      Great energy!
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Excellent product

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      from Phoenix AZ on 10/13/2019
      I took this product for years and it worked great for me. Gave me more energy during the day.

      Pros

      Works well.

      Cons

      I stopped taking this product once I became aware of fillers and binders. Since I take handfuls of tablets every day, the bad fillers and binders started to add up. I now attempt to choose products without filler and binders. This one has magnesium stearate and silicon dioxide.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Love this

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      from Okla on 11/07/2018
      When I first took this I gave it a bad review. The first day, the niacin made me feel sunburnt but the next day and since, it’s been fine. I like that it’s methylated so easy to absorb. If you have the MTHFR gene this is a good b complex for you.

      Pros

      Everything

      Cons

      Nothing
      review-checkI would recommend this item to a friend.
      1 of 1 people found the following review helpful.
    • Verified Buyer

      Great Product!

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      from Mount Juliet TN on 9/10/2018
      Love Fully Active B Complex by Doctor's Best! It has the correct form of B's for those with the MTHFR mutations.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Great quality product!

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      from JONESBOROUGH TN on 2/19/2018
      Fully Active B Complex with Quatrefolic by Doctor's Best assists in overall energy level and metabolic processing.

      Pros

      Better energy level.

      Cons

      Nothing.
      review-checkI would recommend this item to a friend.
    • Verified Buyer

      Good stuff!

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      from Arlington MA on 2/07/2018
      I love Fully Active B Complex with Quatrefolic by Doctor's Best since I feel more refreshed after a nights sleep and maybe they make my dreams more memorable!

      Pros

      Makes me feel good.

      Cons

      Small amount of pills.
      review-checkI would recommend this item to a friend.
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Additionally, PureFormulas is unable to directly recommend products in relation to specific health conditions. Please contact your trusted healthcare practitioner for direct product recommendations.

If you have any general questions regarding orders or our policies and programs, please contact our Customer Happiness Team @ 1.800.383.6008

If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Your healthcare professional is the best source for guidance before beginning an exercise or nutritional supplement program.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

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