THORNE - L-Arginine Sustained Release Formerly Perfusia-SR - Support Heart Function Nitric Oxide Production Optimal Blood Flow -

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    "Circulation Support: Benefits heart health, collagen formation, and more by helping relax the arteries and regulate blood flow to the extremities and throughout the body*",
    "Sustained-Release Formula: Maintains optimal levels of arginine over 24 hours when taken twice daily as suggested",
    "Athletic Performance: Enhances muscle capacity and output during exercise and helps promote cellular repair*",
    "Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants",
    "Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)"
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    "Is Discontinued By Manufacturer": "‎ No",
    "Product Dimensions": "‎ 2.58 x 2.58 x 4.94 inches; 5 ounces",
    "Item model number": "‎ Thorne Research",
    "Date First Available": "‎ June 27, 2008",
    "Manufacturer": "‎ Thorne Research",
    "ASIN": "‎ B000FH13LI",
    "Best Sellers Rank": "#16,092 in Health & Household ( See Top 100 in Health & Household ) #17 in L-Arginine Nutritional Supplements",
    "Customer Reviews": "4.6 4.6 out of 5 stars (618)"
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    "average_rating": 4.6,
    "customers_say": "Customers report that the supplement helps lower blood pressure and improves vascular health, with one noting it stimulates nitric acid production.",
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        "title": "5.0 out of 5 stars energy comes back faster",
        "body": "great product, my husband was feeling week after surgery this helped with his recovery and he feels stronger after his workout Read more",
        "author": "Cf",
        "rating": 5,
        "date": "November 24, 2025",
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      {
        "title": "5.0 out of 5 stars Works for me",
        "body": "I'm an African American male in my low 50s and woke up one day to find I had elevated BP. An estimated 40% of blacks suffer from high BP and in my search for a solution, I learned about perfusia it in Kowalski's book, \"The Blood Pressure Cure,\" which is itself a great book which I also recommend. He gives the science behind BP control and what we know about alternative meds. In fact, an M.D., Kowlaski does not reject pharmaceuticals but says they should be the last resort. I agree with him. Remember the enemy is not pharmaceuticals but high BP. Kowalski gives a raft of safe, \"natural\" supplements backed by research to try. Thus, I began to systematically explore them one by one about 8 months ago. I figured something had to work. When I began experimenting with perfusia my BP was 135/92 at home. This may not sound very high, in fact, it is borderline. But keep in mind this was the median BP which means half were above this figure and half below. After using perfusia for about four months, I took after 25 BP measurements over two weeks at home and I found my median BP had dropped to 121/79. I had also began exercising regularly (I got a gym membership and walked for one hour five days a week); I practiced slow breathing (almost everyday for 20 min); and I increased my K:Na (potassium-sodium) ratio to 5:1, again all per Kowalkski. While I cannot say with 100% certainty that perfusia is the sole explanation for my BP drop, the fact is that I had been exercising and slow breathing prior to perfusia with no positive results. Perhaps perfusia works optimally with these other things. I don't know. In any case, they are my insurance policy, kind of a layered strategy. What I find interesting is that after some research many of the things in Kowalski's book work by increasing NO (nitrous oxide) in the endothelium of the blood vessels which relaxes them. Exercise, increasing K, polyphenols in vegetables, etc. do this. L-arginine which is the main ingredient of perfusia is an NO precursor. What makes perfusia different is that it is time-released. Apparently, ordinary L-arginine is metabolized very quickly to be of any practical use. Thus, the claim is you can't go out and use any L-argine supplement, although I don't know if this is really the case since I haven't tried any other L-arginine supplement. Perhaps most importantly, I seem to have had no side effects (knock, knock). Finally, the cost of this product is not cheap. However, cost is probably on par with pharmaceutical BP meds which are infamous for their negative side-effects. They are horrible. You can do the research and see for yourself what others are saying and what the data shows. So for me, perfusia is a bargin, all things considered. Read more",
        "author": "Kaarik",
        "rating": 5,
        "date": "March 25, 2013",
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      {
        "title": "5.0 out of 5 stars Price and quality are good",
        "body": "Good product. Better for your body than prescription meds Read more",
        "author": "Customer",
        "rating": 5,
        "date": "November 1, 2025",
        "verified": true,
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      {
        "title": "4.0 out of 5 stars I don’t know what I don’t know.",
        "body": "This is a very simple purchase. And I’ve only been using this for a few days. Read more",
        "author": "Kindle Customer",
        "rating": 4,
        "date": "June 7, 2025",
        "verified": true,
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      {
        "title": "5.0 out of 5 stars Great",
        "body": "Great product , great seller! Read more",
        "author": "james m. cline",
        "rating": 5,
        "date": "June 11, 2025",
        "verified": true,
        "images": []
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      {
        "title": "5.0 out of 5 stars Helpful for vascular health",
        "body": "Helpful for vascular health. Quality formulation Read more",
        "author": "Molly S. Boehm",
        "rating": 5,
        "date": "July 31, 2025",
        "verified": true,
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      {
        "title": "5.0 out of 5 stars thorne uses third party authentication",
        "body": "helps stimulate energy levels along with other amino acids. Read more",
        "author": "joanna k.",
        "rating": 5,
        "date": "April 25, 2025",
        "verified": true,
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      {
        "title": "5.0 out of 5 stars Excellent product, I believe",
        "body": "I like the quality of this product but it is rather expensive. Capsules are easy to swallow. Needs to be taken on an empty stomach for best results, as do most amino acids. Read more",
        "author": "Charles P.",
        "rating": 5,
        "date": "May 29, 2024",
        "verified": true,
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  "about_this_item": "Product description The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. hero-video Merchant Video Previous page Next page 1 Testing 2 The \"No-List\" 3 U.S. Manufactured 4 Formulation 5 Quality Ingredients Discover More Products From Thorne L-Arginine Add to Cart Basic Nutrients Add to Cart Creatine Add to Cart Magnesium Glycinate Add to Cart Super EPA Add to Cart Berberine Add to Cart Magnesium Bisglycinate Add to Cart Customer Reviews 4.6 out of 5 stars 618 4.2 out of 5 stars 6,948 4.7 out of 5 stars 15,796 4.7 out of 5 stars 1,445 4.6 out of 5 stars 2,879 4.4 out of 5 stars 6,030 4.3 out of 5 stars 2,278 Price $44.00 $ 44 . 00 $36.00 $ 36 . 00 Circulation Support: Benefits heart health, collagen formation, and more by helping relax the arteries and regulate blood flow to the extremities and throughout the body*; Sustained-Release Formula: Maintains optimal levels of arginine over 24 hours when taken twice daily as suggested; Athletic Performance: Enhances muscle capacity and output during exercise and helps promote cellular repair*; Third-Party Certified: This product",
  "long_description": "Product description The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. hero-video Merchant Video Previous page Next page 1 Testing 2 The \"No-List\" 3 U.S. Manufactured 4 Formulation 5 Quality Ingredients Discover More Products From Thorne L-Arginine Add to Cart Basic Nutrients Add to Cart Creatine Add to Cart Magnesium Glycinate Add to Cart Super EPA Add to Cart Berberine Add to Cart Magnesium Bisglycinate Add to Cart Customer Reviews 4.6 out of 5 stars 618 4.2 out of 5 stars 6,948 4.7 out of 5 stars 15,796 4.7 out of 5 stars 1,445 4.6 out of 5 stars 2,879 4.4 out of 5 stars 6,030 4.3 out of 5 stars 2,278 Price $44.00 $ 44 . 00 $36.00 $ 36 . 00 $44.00 $ 44 . 00 $25.00 $ 25 . 00 $41.00 $ 41 . 00 $44.00 $ 44 . 00 $52.00 $ 52 . 00 Servings 60 30 90 90 90 30 60 Primary Benefits Heart & Men's Health Foundational Support Sports Performance Muscle & Sleep Support Heart & Brain Health Heart & Gut Health Muscle & Sleep Support Key Ingredients L-Arginine Vitamin B, Magnesium Creatine Monohydrate Magnesium Glycinate Omega-3 Fatty Acids Berberine Phytosome Magnesium Gluten & Dairy Free ✔\n\nHighlights: Circulation Support: Benefits heart health, collagen formation, and more by helping relax the arteries and regulate blood flow to the extremities and throughout the body* Sustained-Release Formula: Maintains optimal levels of arginine over 24 hours when taken twice daily as suggested Athletic Performance: Enhances muscle capacity and output during exercise and helps promote cellular repair* Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)\n\nKey details: Is Discontinued By Manufacturer: ‎ No | Product Dimensions: ‎ 2.58 x 2.58 x 4.94 inches; 5 ounces | Customer Reviews: 4.6 4.6 out of 5 stars (618)\n\nHow it fits your day: Use the key specs and highlights above to match it to your setup, space, or routine before you check out.\n\nCustomer feedback: 4.6/5 average rating.\n\nCustomers say: Customers report that the supplement helps lower blood pressure and improves vascular health, with one noting it stimulates nitric acid production.\n\nReview snippets: great product, my husband was feeling week after surgery this helped with his recovery and he feels stronger after his workout Read more / I'm an African American male in my low 50s and woke up one day to find I had elevated BP. An estimated 40% of blacks suffer from high BP and in my search for a solution, I learned about perfusia\n\nProduct description The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. hero-video Merchant Video Previous page Next page 1 Testing 2 The \"No-List\" 3 U.S. Manufactured 4 Formulation 5 Quality Ingredients Discover More Products From Thorne L-Arginine Add to Cart Basic Nutrients Add to Cart Creatine Add to Cart Magnesium Glycinate Add to Cart Super EPA Add to Cart Berberine Add to Cart Magnesium Bisglycinate Add to Cart Customer Reviews 4.6 out of 5 stars 618 4.2 out of 5 stars 6,948 4.7 out of 5 stars 15,796 4.7 out of 5 stars 1,445 4.6 out of 5 stars 2,879 4.4 out of 5 stars 6,030 4.3 out of 5 stars 2,278 Price $44.00 $ 44 . 00 $36.00 $ 36 . 00 $44.00 $ 44 . 00 $25.00 $ 25 . 00 $41.00 $ 41 . 00 $44.00 $ 44 . 00 $52.00 $ 52 . 00 Servings 60 30 90 90 90 30 60 Primary Benefits Heart & Men's Health Foundational Support Sports Performance Muscle & Sleep Support Heart & Brain Health Heart & Gut Health Muscle & Sleep Support Key Ingredients L-Arginine Vitamin B, Magnesium Creatine Monohydrate Magnesium Glycinate Omega-3 Fatty Acids Berberine Phytosome Magnesium Gluten & Dairy Free ✔ ✔ ✔ ✔ ✔ ✔ ✔ Trusted by 45K+ Health Pros ✔ ✔ ✔ ✔ ✔ ✔ ✔ 3rd Party Certified ✔ ✔ ✔ ✔ ✔ ✔ ✔",
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      "text": "Product description The video showcases the product in use. The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. hero-video Merchant Video Previous page Next page 1 Testing 2 The \"No-List\" 3 U.S. Manufactured 4 Formulation 5 Quality Ingredients Discover More Products From Thorne L-Arginine Add to Cart Basic Nutrients Add to Cart Creatine Add to Cart Magnesium Glycinate Add to Cart Super EPA Add to Cart Berberine Add to Cart Magnesium Bisglycinate Add to Cart Customer Reviews 4.6 out of 5 stars 618 4.2 out of 5 stars 6,948 4.7 out of 5 stars 15,796 4.7 out of 5 stars 1,445 4.6 out of 5 stars 2,879 4.4 out of 5 stars 6,030 4.3 out of 5 stars 2,278 Price $44.00 $ 44 . 00 $36.00 $ 36 . 00 $44.00 $ 44 . 00 $25.00 $ 25 . 00 $41.00 $ 41 . 00 $44.00 $ 44 . 00 $52.00 $ 52 . 00 Servings 60 30 90 90 90 30 60 Primary Benefits Heart & Men's Health Foundational Support Sports Performance Muscle & Sleep Support Heart & Brain Health Heart & Gut Health Muscle & Sleep Support Key Ingredients L-Arginine Vitamin B, Magnesium Creatine Monohydrate Magnesium Glycinate Omega-3 Fatty Acids Berberine Phytosome Magnesium Gluten & Dairy Free ✔ ✔ ✔ ✔ ✔ ✔ ✔ Trusted by 45K+ Health Pros ✔ ✔ ✔ ✔ ✔ ✔ ✔ 3rd Party Certified ✔ ✔ ✔ ✔ ✔ ✔ ✔"
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