Doctor's Best Fully Active Folate with Quatrefolic, 400 mcg, 90 Vegetarian Capsules

Who Should Consider Adding Folate to Their Routine?

Discover Doctor'S Best Fully — Folate is particularly important for women of reproductive age, especially those planning a pregnancy, as it supports fetal neural tube development. Individuals with MTHFR gene variants, older adults with reduced absorption, and those aiming to support cardiovascular health through healthy homocysteine levels may also find this supplement beneficial. Vegans and vegetarians might consider supplementing since dietary sources like liver are often absent from plant-based diets. As always, consult your healthcare practitioner before starting any new supplement, particularly if you have a medical condition or are taking medications.

What Makes Quatrefolic® Different from Ordinary Folic Acid?

Folate supplements are not all the same. Doctor's Best Fully Active Folate uses Quatrefolic®, a patented form of (6S)-5-methyltetrahydrofolate (5-MTHF) — the biologically active form your body can use directly. Unlike synthetic folic acid, which needs liver conversion, Quatrefolic® is already active. This makes it particularly helpful for people with MTHFR gene mutations who may struggle to convert folic acid. Additionally, Quatrefolic® boasts superior stability and water solubility for consistent potency and absorption.

Health Benefits of Doctor's Best Fully Active Folate

Folate is essential for many bodily functions. As a water-soluble B vitamin, it contributes to normal red blood cell formation, immune function, and reducing tiredness and fatigue. The active folate in this product supports healthy homocysteine metabolism, promoting cardiovascular health. Folate is also crucial for DNA synthesis and cell division, especially important for rapidly dividing cells. Many users experience better mood and cognitive function because folate is involved in neurotransmitter production. This supplement supports mental clarity and emotional balance without the stimulating effects of some other products.

How Much Fully Active Folate Should You Take?

Each capsule contains 400 mcg of Quatrefolic®. This matches the recommended dietary allowance (RDA) for most adults. Pregnant women require 600 mcg daily, while those planning pregnancy may take 400–800 mcg. The safe upper limit from supplements is 1,000 mcg. Since this supplement provides the active form, even individuals with absorption issues can effectively use the 400 mcg dose. Taking the capsule with a meal can enhance absorption.

How to Choose a Quality Folate Supplement

When choosing a folate supplement, quality is key. Opt for bioavailable forms like Quatrefolic® (5-MTHF) over synthetic folic acid. Third-party testing for purity and potency is a sign of a reliable product. Doctor's Best is committed to quality, and this supplement is non-GMO, vegan, gluten-free, and made in a cGMP-certified facility. The label clearly lists the folate form and dosage, offering transparency. Steer clear of supplements with unnecessary fillers or additives.

Potential Side Effects and Precautions

Folate supplements are generally well tolerated. However, very high doses (over 1,000 mcg) may cause abdominal cramps, nausea, or sleep disturbances. Importantly, high doses of folic acid can mask a vitamin B12 deficiency, which is common in older adults and can lead to neurological damage. Because this product uses methylfolate, it may not mask B12 deficiency to the same degree, but caution is still warranted. Pregnant or breastfeeding women, or those with a history of certain cancers, should consult a healthcare practitioner before use.

Frequently Asked Questions

Can I take this if I have an MTHFR mutation? Absolutely. Quatrefolic® is the active form, meaning it doesn't require the MTHFR enzyme, making it perfect for those with common MTHFR variants.

Is this product suitable for pregnancy? The 400 mcg dose supports general health; pregnant women should follow their healthcare practitioner's advice, usually 600–800 mcg daily.

Why is active folate better than folic acid? Active folate (5-MTHF) bypasses liver conversion, so it's more efficient and works for more people.

These statements have not been evaluated by Health Canada. This product is not intended to diagnose, treat, , or prevent any disease.