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Doctor's Best
120 Tablets
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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 - L-Arginine Sustained plus Immediate Release 500 mg. - 120 Tablets


Zoom View - L-Arginine Sustained plus Immediate Release
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    Item Code: 77186
    UPC Code: 753950002005
    Pricing Info Re-Order
    Retail Price: $29.99
    LuckyVitamin: $15.58
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    Product: L-Arginine Sustained plus Immediate Release
    Code#: Lucky ID: 77186 | UPC: 753950002005
    Manufacturer:Doctor's Best
    Size/Form: 120  Tablets
    Packaged Ship Weight: 1  lbs
    Servings: 60
    Dosage Size: 2  Tablet(s)
    Potency Size: 500  mg.
    Auto Re-Order Frequency: More Info



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    - (4 ratings) -
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    3 of 4 (75%) of customers said they would recommend
    this product to a friend.

    Description Suggested Use Ingredients Reviews Manufacturer Info Show All
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    Doctor's Best L-Arginine Sustained Plus Immediate Release Arginine 500 mg. - 120 Tablets

    Doctor's Best Sustained plus Immediate Release L-Arginine contains this conditionally essential amino acid in a bilayer tablet, with two tablets providing 500 mg of sustained release and 500 mg of immediate release L-arginine in a formula that allows for enhanced blood levels of this nutrient. Most supplemental L-arginine is quickly absorbed into circulation and is extremely efficiently metabolized, yielding only a short-lived boost to L-arginine levels. Doctors Best Sustained plus Immediate Release L-Arginine tablets are specifically manufactured to immediately increase blood levels of L-arginine and then to sustain this beneficial increase continuously over an 8-hour period.

    L-arginine has been shown to support the cardio- vascular system, promote vigorous heart function and enhance healthy circulation throughout the body through its conversion to nitric oxide. Research suggests L-arginine supplementation may also have positive benefits on athletic performance.

    • Science-based nutrition
    • Dietary supplement
    • Promotes a healthy cardiovascular system
    • Enhances healthy circulation
    • Supports heart function

    Promotes a Healthy Cardiovascular System, Enhances Healthy Circulation and Supports Heart Function
    The normal aging process in humans has been found to be associated with progressive changes in endothelial function (cells that line the inner surfaces of blood vessels). Research suggests that a major reason for these common changes associated with aging is reduced production or bioavailability of nitric oxide (NO) in vessels and tissues (Bode-Boger et al. 2003). L-arginine is a substrate for the enzyme nitric oxide synthase, required for the production of nitric oxide in the body. Nitric oxide is a substance critical for the maintenance of normal vascular function (Brown and Hu 2001). NO mediates a number of physiological effects on the cardiovascular system, including supporting healthy endothelial function, enhancing cardiovascular health and displaying potent antioxidant properties against free radical species.

    Oral L-arginine supplementation has been shown in clinical studies to support various aspects of cardiovascular health. A randomized double-blind placebo-controlled trial found that six weeks of L-arginine supplementation enhanced circulation, improved arterial compliance and supported healthy heart function compared to placebo. The mechanism of L-arginine’s effect was due to its role in NO production. Other clinical trials have shown that oral L-arginine supplementation contributes to enhanced exercise tolerance because of its ability to enhance cardiac circulation and vasodilation of blood vessels (Appleton 2002). Multiple clinical trials have been conducted in which L-arginine at various doses has been administered to healthy individuals to assess its impact on cardiovascular function and health. In one such study, L-arginine enrichment of the diet in healthy individuals was shown to cause a reduction in arterial blood pressure, while other studies in healthy individuals did not report this effect. However, the overall results of these and other clinical trials showed that long-term administration of this amino acid significantly enhanced endothelial function (Cylwik et al. 2005).

    The Benefits of Sustained Release Arginine
    L-arginine undoubtedly has many benefits for cardiovascular health. Studies show that arginine is metabolized extremely efficiently by the body and used as a precursor for nitric oxide formation. L-arginine reaches its highest concentration in the bloodstream within an hour of its use and then tends to taper off quickly (Miller 2006). For this reason, relatively large doses of this amino acid taken frequently throughout the day are required to produce positive results. Blood levels of arginine are quickly depleted and frequent replenishment is necessary to ensure its availability.

    Recent technological advancements have allowed for the development of sustained release forms of this beneficial amino acid. Sustained plus Immediate Release L-Arginine contains the amino acid L-arginine in the form of arginine alpha-keto-glutarate. The bilayer tablet design allows for the benefits of immediate arginine uptake, resulting in a quick spike in arginine concentration, along with the longer-term effects of sustained arginine blood levels through sustained release of this important amino acid. This allows for higher arginine blood levels for a continuous period of up to 8 hours. With increased and consistent blood levels, less L-arginine is required, the frequency of dosing necessary to maintain its benefits is reduced and the efficacy is maintained over a longer period of time – all tangible benefits worth looking for in a quality L-arginine supplement."

    Suggested Use

    Take 2 tablets once or twice daily, away from food, or as directed by a nutritionally informed physician.

    Ingredients

    Doctor's Best - L-Arginine Sustained plus Immediate Release 500 mg. - 120 Tablets
    Supplement Facts
    Serving Size: 2 tablets
    Servings Per Container: 60
    Amount Per Serving %DV
    L-Arginine (as 500mg immediate release and 500mg sustained release from L-Arginine alpha-Keto-Glutarate) 1000mg *
    *Daily Value Not Established.
    †Percent Daily Values are based on a 2,000 calorie diet. Your diet values may be higher or lower depending on your calorie needs.
     
    Other Ingredients: Cellulose, vegetable stearins, magnesium stearate (vegetable source), silicon dioxide.
    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
    Reviews
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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 4 rating(s)
    3 of 4 (75%) of customers said they would recommend this product to a friend.
    • By patti ( Youngsville, NC)
      12/6/2011 3:52:45 PM

      I recommend this product!
      works well in lowering my blood pressure, taken twice a day keeps me in normal range.
    • By tony ( Cicero, IL)
      8/27/2012 12:41:02 AM

      I recommend this product!
      L-Arginine has been a very good addition to my supplements for better heart circulation and potency.. At age 68 I find this product to be improving my blood circulation in my heart vessels and in my reproductive organs.
    • By Anne ( Huntington, WV)
      6/14/2013 8:26:13 AM
      use this 2x's a day, didn't meet all expectations, added niacin
    • By Mark ( Dupo, IL)
      11/19/2013 3:25:02 PM

      I recommend this product!
      Tablets are easy to take, have had no bad effects from the product
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    *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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