Doctor's Best Fully Active Folate 400 with Quatrefolic 400 mcg

Doctor's Best · Fully Active Folate 400 with Quatrefolic 400 mcg

Doctor's Best

Fully Active Folate 400 with Quatrefolic 400 mcg

Vitamin90 servings

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None of the 2 actives we can check reach a studied dose.

Dose 0 of 2 reach a studied dose

How to takeSuggested Adult Use: Take 1 capsule daily preferably between meals, or as recommended by a nutritionally-informed physician.

  • Vegan
  • Vegetarian
  • Gluten Free
Quality

How it scores

$8.65 4.7 (3,487)

Overall

F

Evidence

F

Dose

F

Formulation

A

Brand

82/100

Dose check

Does the dose do anything?

  • Vitamin C

    Below the studied range

    0.04 g / day studies used 0.1-2.5 g · 19 studies

  • Folate

    Below the studied range

    0.4 mg / day studies used 1-15 mg · 24 studies

What it's studied for

  • Stroke preventionB

    Lower first-stroke risk

    Cardiovascular

  • Vitamin C and EC

    Maintain antioxidant vitamin stores

    Inflammation & oxidative stress

  • Focus staminaD

    Hold focus through repetitive work

    Attention & executive function

  • Respiratory illnessA

    Prevent acute respiratory infections

    Respiratory

  • Memory across tasksB

    Recall information across tasks

    Memory & learning

The label

What's in it

Serving size 1 Veggie Capsule(s)

IngredientAmount%DV
  • Vitamin C as Ascorbic Acid 40 mg 45%
  • Folate as (6S)-5-Methyltetrahydrofolic Acid, Glucosamine Salt 400 mcg DFE 100%

Other ingredients

Clean formula. The inactive ingredients are standard capsule components.

  • Microcrystalline Cellulose: bulking agent
  • Modified Cellulose

Reported interactions

Interacts with:
Bortezomib ·Doxorubicin ·Phenytoin ·Carbamazepine ·Phenobarbital ·Warfarin ·Antineoplastic_agents ·Primidone
Side effects:
Acute kidney injury ·Hypertension ·Pregnancy ·Nausea ·Vomiting ·Diarrhea

From research databases. Not medical advice — talk to your physician.

The brand

Doctor's Best

82/100

Doctor's Best shows a mixed trust profile, with visible transparency signals and a product-specific COA, but the provided materials do not establish broad, independently verified quality control.

Quality 69
Formulation 84
Safety 97
Transparency 78
Value 92
  • ✓ Third-party tested
  • ✓ Effective dosing
  • ✓ Premium ingredients
Read the full Doctor's Best investigation →

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