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Doctor's Best
90 Vegetarian Capsules
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About Doctor's Best

Founded in 1990 by a pioneering physician committed to science-based alternative health care, Doctor’s Best offers only the most important nutritional supplements. Containing the finest quality raw materials from around the world, Doctor’s Best supplements embody the best that traditional knowledge and current scientific research have to offer in the field of therapeutic nutrition. Each of their products is accompanied by an annotated "fact sheet" with detailed background information, structure-function statements, and scientific references that substantiate these statements. All structure-function statements have been filed with FDA in accordance with DSHEA regulations.

Contact Doctor's Best

197 Avenida La Pata
San Clemente, CA, 92673
http://www.drbvitamins.com
949-498-3628

Doctor's Best - Fully Active Best Folate featuring Quatrefolic 400 mcg. - 90 Vegetarian Capsules

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Item Code: 115456
UPC Code: 753950002623
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Product: Fully Active Best Folate featuring Quatrefolic
Code#: Lucky ID: 115456 | UPC: 753950002623
Manufacturer:Doctor's Best
Size/Form: 90  Vegetarian Capsules
Packaged Ship Weight: 0.15  lbs
Servings: 90
Dosage Size: 1  Capsule(s)
Potency Size: 400  mcg.
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Doctor's Best Fully Active Best Folate 400 mcg - 90 Vegetarian Capsules

Doctor's Best Folate Functional deficiencies of the essential nutrient folate (folic acid) are common, and can impair key life processes including gene-level regulation, cell growth patterns and tissue repair, from before birth through old age. Best Fully Active Folate provides MTHF (5-methyltetrahydrofolate), the folate form most directly required for DNA regulation and other fundamental metabolic processes. Doctor's Best Fully Active Best Folate is the most bioactive MTHF available anywhere.

  • Science-based nutrition
  • Dietary supplement
  • Helps correct inherited and lifestyle-related folate deficiencies
  • Supports health mood, memory, circulation and well-being
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Doctor's Best Fully Active Folate Ingredient Profile
 
Doctor's Best Fully Active Folate supplies the B vitamin folate as [6S]-5-methyltetrahydrofolic acid (MTHF). This is the body’s most fully active folate nutrient, its most important folate reservoir, and the only folate form biochemically identical to the MTHF present in the body. This supplement features Quatrefolic, human-identical MTHF, as a glucosamine salt. This next-generation supplement guarantees the intricate MTHF structure with improved stability over the earlier-generation calcium salt of MTHF.
 
Named after the Latin word for leaf (“folium”), folate is the collective term for a family of pteroylglutamate nutrients that are most concentrated in leafy vegetables.3 The body cannot make folate on its own and must obtain it from foods or dietary supplements, with possible small contributions from intestinal bacteria. Foods supply only limited amounts of folates and these are generally not well absorbed. Of the folates that are absorbed, almost all are converted to MTHF.4 The Quatrefolic brand of MTHF in this supplement is the most stable and best-absorbed form available anywhere.
 
Doctor's Best Fully Active Folate Benefits

MTHF is a cornerstone of human metabolism. It is the body’s ultimate resource for methyl groups (–CH3), which are essential cofactors for numerous enzymes that manage a complex web of metabolic pathways. Methyl groups from MTHF are involved in diverse life processes:
MTHF is a cornerstone of human metabolism. It is the body’s ultimate resource for methyl groups (–CH3), which are essential cofactors for numerous enzymes that manage a complex web of metabolic pathways. Methyl groups from MTHF are involved in diverse life processes:
  • Synthesis of DNA, RNA and other molecular machinery for protein production.
  • Higher-level gene regulation via activation and deactivation (“epigenesis”).
  • Production of the hormone melatonin6 and the brain transmitters serotonin, dopamine, and noradrenaline.
  • Recycling of the potentially toxic metabolite homocysteine, into nontoxic methionine.
  • Wrapping of nerve cells with myelin protein, to optimize their electrical conductivity.
  • Supplying “one-carbon” groups (mostly as methyl) to drive numerous metabolic reactions.
Essential For DNA Integrity and Epigenetic Gene Regulation

Some enzymes use methyl available from MTHF to produce certain purines and pyrimidines, which are building blocks for the bio-synthesis of DNA and RNA.8 DNA is the genetic “blueprint” for making functional proteins, while RNA helps translate the blueprint into the final protein structure. MTHF is the body’s ultimate methyl reservoir, its most dependable source for obtaining methyl groups to build DNA and RNA, and from them proteins and phospholipids as needed.
 
A gene is a length of DNA with various attached proteins that help regulate the DNA. Various enzymes attach or detach methyl groups to and from the gene’s DNA and its associated proteins, as part of a sophisticated regulatory process called epigenetics. As the term implies, epigenetics is higher-level gene control—in part, the use of methyl as a “toggle switch” for turning each gene off or on. Adding methyl turns the gene off, removing methyl turns it on.

Every cell has a distinctive epigenetic pattern that is translated into specific protein patterns, which produce its unique functional profile. In humans with MTHF deficiency, available methyl is limited and can contribute to genetic and epigenetic abnormalities. DNA strands can break, DNA repair can be impaired, and other changes can occur that affect gene and chromosome structure. The deleterious genetic effects of mild folate deficiency have been compared to X-ray exposure (equivalent to approximately 10 times above the maximum X-ray limit considered safe).

In studies of healthy Australian adults, the third of the population with the lowest folate showed significantly more of these folate deficiency effects. Folate deficiency can have epigenetic effects that cascade to cause “downstream” effects on cell structure and function.
The Brain Relies Heavily on MTHF.

MTHF plays a crucial role in the brain’s early development and its ongoing plasticity—the all-important capacity to adapt to changing life circumstances. The brain has very high demand for MTHF, and expends energy to import it across the blood-brain barrier using specialized transport proteins. The brain also homeostatically regulates the MTHF in its cerebrospinal fluid (CSF). MTHF levels in the CSF are commensurate with brain health and overall health and wellbeing. 

The brain’s reliance on MTHF starts from its very beginning. As the fetal brain begins to form (at about 4-5 weeks after conception) it draws MTHF from the mother’s pool. But the body actually stores very little MTHF, so the mother can soon become folate deficient. There is a well- established link between maternal folate deficiency and fetal neural tube defects. MTHF deficiency also can afflict newborn babies. Since common foods supply limited amounts of folate, the pregnant women is well advised to supplement with fully active folate—MTHF.
In adults, adequate folate status appears linked to healthy brain structure, including appropriate size of the hippocampus and the amygdala, brain zones important for memory and other cognitive functions. In this manner, adequate folate intake supports healthy maintenance of memory, healthy mood balance, and all the other higher brain functions.

MTHF Is A Core Nutrient for Healthy Mood Enhancement

Several population (epidemiologic) studies in the U.S. and other countries have linked low folate levels to difficulties with mood management. When those receiving the highest amounts of folate were compared with those receiving the lowest amounts, the highest folate status was associated with the least severe occurrence of mood difficulties. MTHF is gaining mainstream attention as a nutritional component of integrative mood enhancement.
Methyl from MTHF is essential for the body’s production of SAMe (S-adenosylmethionine). SAMe is a highly energized and versatile methyl donor, important for DNA and RNA regulation, for cell membrane phospholipid synthesis, for synthesis of the key antioxidant glutathione, and for numerous other methyl modifications of key biological molecules. SAMe supports healthy mood management and many other important life functions.

A Top Priority Nutrient During Pregnancy

In response to the wide prevalence of folate deficiency, the U.S. government instituted food fortification with synthetic folic acid in 1998. Despite these efforts, maternal MTHF deficiency is still an issue. The U.S. Centers for Disease Control and Prevention recommends all women of childbearing age supplement with folate, especially since the need arises during the first trimester when the woman may not be aware she is pregnant. MTHF has proven superior to folic acid for this application.

In two double blind trials, MTHF (at 400 mcg per day) outperformed equal amounts of folic acid (also at 400 mcg per day) for raising women’s red cell MTHF levels. Surveys indicate less than half of all pregnancies in the U.S. are planned, making it prudent for any woman who could become pregnant to consume sufficient MTHF daily.

Another nutrient often strongly recommended during pregnancy is omega-3 DHA (DocosaHexaenoic Acid). A clinical study with pregnant women found that those who supplemented with MTHF (400 mcg per day) along with DHA (500 mg per day, with 150 mg per day of EPA), from week 22 until delivery, developed higher levels of blood DHA than those who did not get MTHF.

MTHF Is Superior to Folic Acid For Folate Supplementation

Unfortunately, as with the natural folates in foods, folic acid has no metabolic or other nutritional value unless converted into MTHF. The enzyme dihydrofolate reductase (DHFR) must do this conversion, though it is not fully adapted for this task since folic acid is hardly found in nature.
Studies with human DHFR show that its folic acid converting activity is weak and varies greatly between individuals. DHFR likely cannot convert more than 250 mcg per day of synthetic folic acid into MTHF. This level of folic acid intake is actually easy to surpass by consuming fortified foods and/or folic acid supplements, so that many people are carrying unconverted, metabolically useless synthetic folic acid in their tissues.

Recent surveys indicate more than one-third of older U.S. adults have unconverted folic acid in their blood. This poses several problems. First, folic acid can negatively interfere with the metabolism of natural folates. Second, folic acid in the blood can mask megaloblastic anemia, a clinical sign of vitamin B12 deficiency, whereas MTHF does not have this effect. Folic acid’s masking of megaloblastic anemia may allow vitamin B12 deficiency to go undetected. Third, folic acid may inhibit natural killer cells, a class of immune cells that help eliminate other cells which have lost growth control.

Another liability of synthetic folic acid is that it is not an antioxidant. Folic acid is a highly oxidized molecule in contrast to MTHF which is a highly reduced molecule and a potent antioxidant. This single feature would strongly recommend MTHF over folic acid for human supplementation. Experts have suggested that one important role for MTHF may be to support the ability of skin to cope with “free radical” damage to its DNA by ultraviolet light.

Folate Deficiencies are Widespread

Folate deficiency is the most prevalent vitamin deficiency worldwide. Besides its potentially crippling effects on the brain and on cell and tissue growth regulation, folate deficiency is linked to anemias, intestinal dysfunction, male fertility problems, pollen hypersensitivities, and bone thinning. Folate deficiency is also linked to blood buildup of homocysteine (HCy), which itself is linked to a plethora of other health problems.
Poor dietary folate intake is a common cause of folate deficiency, but intestinal or kidney dysfunctions, smoking, excessive alcohol consumption, oral contraceptive use, and various pharmaceuticals all deplete blood MTHF. Women who previously used certain oral contraceptives can have lower folate in the first trimester of their pregnancy, especially if they smoke.

Another contributor to widespread folate deficiencies is the commonly existing C677T variation in the folate enzyme MTHFR (methylenetetrahydrofolate reductase), which recycles methylenetetrahydrofolate to MTHF. This variation can cause the enzyme to lose well over half its capacity to make MTHF. The C677T variation exists in almost half of the individuals in some white populations, and is also common in some other ethnic groups, such as U.S. Hispanics and Puerto Ricans. Individuals carrying C677T invariably have low blood
MTHF levels.

MTHF Deficiency Worsens the Homocysteine Threat

Homocysteine is a highly reactive, free radical-type substance with proven toxic potential. It is a normal byproduct of methionine metabolism that can be routinely recycled to methionine using methyl drawn from MTHF. But when methyl is insufficient (as with MTHF deficiency), HCy is not recycled. HCy then accumulates in the blood and other tissues. Therefore, maintenance of healthy HCy levels—through consistent recycling via MTHF—is an important factor supporting cardiovascular health.

Homocysteine levels also typically rise with age. In several studies with aging subjects, including one that lasted three years, high HCy was correlated with low MTHF status and with the health of blood vessels that supply the brain. Supplementation with MTHF can lower elevated HCy, thereby supporting brain circulation and cognitive function. A 2009 double blind trial examining the leg circulation compared MTHF versus folic acid (both taken at 400 mcg per day). MTHF improved pulse wave velocity (PWV), a measure of arterial health, better than did folic acid.
 
Everyone Can Benefit From Taking MTHF

MTHF is the body’s ultimate methyl resource. The human-identical, [6S]-form of MTHF in Best Fully Active Folate is more compatible with human biochemistry than other MTHF forms commercially available. It supplies ample amounts of methyl for the body’s wide range of methyl group applications, helps keep homocysteine at safe levels, and avoids the myriad problems associated with consuming synthetic folic acid.
One capsule taken once a day between meals supplies 400 mcg of highly absorbable Quatrefolic MTHF. Human studies indicate this daily intake will significantly improve MTHF status regardless of genetic variations in DHFR, MTHFR or other folate handling enzymes.  Individuals with life challenges that severely deplete their MTHF stores may do better using higher intakes, under a physician’s supervision.
 

Doctor's Best Quality Standards

Quality Standards
Doctor's Best produces products with the highest quality raw materials available on the market. How? They have direct control over and are an integral part of every aspect of product production, from formulation and raw material sourcing to finished product manufacturing. They directly purchase all active ingredients used in our products and use only the highest quality ingredients.

Science Based Formulations
Every product is thoroughly researched and backed by the latest scientific studies conducted in the field. Their formulations reflect the amounts of ingredients shown to be beneficial based on the results of scientific investigations. They use patented, trademarked ingredients backed by scientific studies and clinical research. We never use insignificant quantities to enhance the label.

Raw Materials
Doctor's Best directly purchases only the highest grade raw materials from proven and reputable suppliers to be put into product formulations. All raw material suppliers go through our stringent vendor qualification process, which includes a multi-step investigation including all aspects of the production and handling procedures, to insure the highest level of quality is reached.

Finished Product
Whether producing a product with one raw material component or many, each finished product is held to the highest cGMP standards and produced under rigid quality control points to ensure product safety, potency, and uniformity. Their rigorous quality assurance and control processes ensure our customers receive only the highest quality nutritional products that exceed industry standards and provide exceptional nutrition benefits.

Quality Promise
Doctor's Best never compromises on ingredients, quality, or science. As a privately owned, independent entity, their answer only to our customers and the retailers who carry our products. They all depend on the integrity of the people and products with whom they deal. Since the day they went into business more than 17 years ago, Doctor's Best has pledged itself to that policy. The bottom line is, if Doctor's Best offers it, it's a proven nutritional concept with genuine health benefits.

About Doctors Best

Doctor's Best firmly believes in the integration of science research and traditional wisdom as the way that nutritional and herbal supplements will reach their exciting potential.

Founded in 1990 by a pioneering physician committed to science-based alternative health care, Doctor’s Best offers only the most important nutritional supplements. Careful research and precise formula development keeps us at the leading edge of quality, effectiveness, and innovation.

Containing the finest quality raw materials from around the world, Doctor’s Best supplements embody the best that traditional knowledge and current scientific research have to offer in the field of therapeutic nutrition. Countless hours have been spent analyzing scientific literature to provide sound alternatives to the proliferation of questionable supplements in the marketplace.

Each of their products is accompanied by an annotated "Fact Sheet" with detailed background information, structure-function statements, and scientific references that substantiate these statements. All structure-function statements have been filed with FDA in accordance with DSHEA regulations.

Traditional wisdom ... up-to-date research ... product quality you can trust ... all the information you need to develop smart strategies for achieving optimal health and well-being.

Suggested Use
Take 1 capsule, preferrably between meals.

Warnings

Suitable for vegetarians. Contains nothing other than listed ingredients.
Ingredients

Doctor's Best Fully Active Folate - 400 mcg - 90 Vegetarian Capsules
Supplement Facts
Serving Size: 1 Capsule
Servings Per Container: 90
Amount Per Serving %DV
(65)5-MethylTetraHydroFolate (MTHF)
(elemental, as 800 mcg (65)-5-Methyltetrahyrdrofolic Acid, glucosamine salt (vegetarian source)
400 mcg 100 %
*Daily Value Not Established
 
Other Ingredients: Rice Flour. modified cellulose (vegetarian capsule).
About Doctor's Best

Founded in 1990 by a pioneering physician committed to science-based alternative health care, Doctor’s Best offers only the most important nutritional supplements. Containing the finest quality raw materials from around the world, Doctor’s Best supplements embody the best that traditional knowledge and current scientific research have to offer in the field of therapeutic nutrition. Each of their products is accompanied by an annotated "fact sheet" with detailed background information, structure-function statements, and scientific references that substantiate these statements. All structure-function statements have been filed with FDA in accordance with DSHEA regulations.


197 Avenida La Pata
San Clemente, CA, 92673
Phone: 949-498-3628
Fax: 949-498-3952
http://www.drbvitamins.com
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Disclaimer: The views and opinions expressed by contributors of the product reviews are their own and not necessarily those of LuckyVitamin.com. LuckyVitamin.com does not endorse or imply any medical claims from these reviews. These reviews should not be taken as recommendations but rather customer opinions of the products that they may or may not have used. Reviews are not intended as a substitute for appropriate medical care or advice and are not intended to diagnose, treat, cure, or prevent any disease. Read the full product reviews disclaimer here.

Average Customer Rating: (4 out of 5)

Based on 3 rating(s)
3 of 3 (100%) of customers said they would recommend this product to a friend.
  • By neel ( Katy, TX)
    4/5/2013 11:08:59 AM

    I recommend this product!
    I trust this brand- have taken for years
  • By Susan ( Charlotte, NC)
    6/30/2014 8:28:06 AM

    I recommend this product!
    Will know after my next blood test if it works.
  • By Joan ( Tampa, FL)
    7/28/2014 4:09:37 PM

    I recommend this product!
    very clean product, take one daily , easy to swallow
*The products and the claims made about specific products on or through this site have not been evaluated by LuckyVitamin.com or the United States Food and Drug Administration and are not approved to diagnose, treat, cure or prevent disease. The information provided on this site is for informational purposes only and is not intended as a substitute for advice from your physician or other health care professional or any information contained on or in any product label or packaging. You should not use the information on this site for diagnosis or treatment of any health problem or for prescription of any medication or other treatment. You should consult with a health care professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem.

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