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Thorne Research, Perfusia-SR, 120 Capsules

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Thorne Research, Perfusia-SR, 120 Capsules

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Thorne Research, Perfusia-SR, 120 Capsules

In Stock
  • Expiration Date: August 2019
  • Shipping Weight:
    0.35 lbs
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  • Product Code: THR-52502
  • UPC Code: 693749525028
  • Package Quantity: 1 Bottle
  • Dimensions:
    2.6 x 2.6 x 5 in, 0.3 lbs
    Switch to Metric units

Product Rank:

#15 in L Arginine >
Frequently Purchased Together
Product Overview


  • Dietary Supplement
  • L-Arginine
  • Gluten Free
  • Throne Exclusive
  • Sustained Release
  • Circulation
  • Heart/Vessels
  • Men's Health

Support heart health and optimal blood flow with sustained-release L-arginine.

Perfusia-SR, sustained-release L-arginine, promotes the production of nitric oxide in the arteries. The vascular benefits include improved blood flow and maintenance of normal blood pressure.

There has been significant research on the cardiovascular benefits of L-arginine – the primary ingredient in Perfusia-SR – for supporting vascular health and blood flow. One of L-arginine's most important roles is as a biological precursor of nitric oxide. The vascular endothelium (the lining of the arteries) creates nitric oxide from L-arginine, resulting primarily in blood vessel relaxation. This property is important to maintaining good vascular health, heart health, reproductive health, wound healing, and protection against oxidative damage. L-arginine also promotes increased work capacity during exercise, supports lean muscle mass, and helps erections occur in the normal course of intimacy. Perfusia-SR is provided in a sustained-release formula to maintain an optimal level of L-arginine over 24 hours with suggested twice-daily use.

L-arginine is a semi-essential amino acid involved in multiple areas of human physiology and metabolism. It significantly affects endocrine function and helps regulate the release of neurotransmitter chemicals, insulin, glucagon (which has the opposite effect of insulin; i.e., it raises blood sugar), and growth hormone. However, one of L-arginine's most compelling contributions to human physiology is its role as a biological precursor of nitric oxide. The vascular endothelium (the lining of the arteries) creates nitric oxide from L-arginine, resulting primarily in blood vessel relaxation. This property is important to maintaining good vascular health, heart health, reproductive health, and protection against oxidative damage. Maintaining the natural and healthy function of the vascular endothelium depends on an adequate supply of L-arginine being available to these cells. Without adequate L-arginine (and subsequently, nitric oxide) available to the vascular endothelial cells, arteries might not optimally dilate, which can result in less than optimal blood flow to the organs and extremities.

A recent study demonstrated improvements in blood flow after Perfusia-SR supplementation in individuals who had less than optimum heart health. In another study, Perfusia-SR was given to 29 healthy volunteers for one week and significant support for a healthy cardiovascular system was observed.

Studies on Perfusia-SR show increased blood flow to the heart muscle and the extremities, maintenance of already normal blood pressure, and improved vascular elasticity.

In a large, double-blind clinical trial that observed male reproductive health issues, 1.6 grams of L-arginine given daily for six weeks resulted in improvement in reproductive health in those men who had low nitric oxide metabolism.

Like most amino acids, L-arginine functions as a building block for proteins; however, its presence also appears to support wound healing. Numerous studies show L-arginine supplementation benefits wound healing time and the strength of the tissues in and around the wound during the healing phase.

Suggested Use

Take 2 capsules two times daily or as recommended by your health-care practitioner.

Other Ingredients

High and low viscosity hydroxypropyl methylcellulose, calcium laurate and magnesium citrate (time-sorb†), hypromellose (derived from cellulose) capsule, leucine, silicon dioxide.

†L-Arginine complexed with Time-Sorb, a time-release matrix.


Tamper Evident: Use only if bottle is sealed.

If pregnant, consult your health-care practitioner before using this product.

Store tightly sealed in a cool, dry place.


While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
Supplement Facts
Serving Size: Two Capsules
Servings Per Container: 60
  Two Capsules Contain: %DV
L-Arginine † 1 g *
*Daily Value (DV) not established.
†L-Arginine complexed with Time-Sorb, a time-release matrix.
iHerb Customer Reviews

Heart support

Posted by iHerb Customer on March 8 2018 | Verified Purchase

This product was recommended by a highly knowledgeable naturopath for my heart after suffering from tachycardia for decades & then ectopic beats from menopause. It has helped to heal & stabilise my heart. It was her preferred product as the most reliable, effective & of best purity

Thanks for your feedback!

do you have a problem with blood pressure ? than you might be need this.

Posted by tripleschizo on October 31 2016 | Verified Purchase

this freakin magic pills form Throne , works great for my blood problem . if you are sensivitve body conditions , and feel something problem with your heart , blood temperture , than this might be works for you. but as always pacakging was dissapointed , it shipped like few bucks stuff , i dose buy few bucks stuff , so it was acceptable . 5 stars apporved november one 2016 KST

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Great supplement!

Posted by iHerb Customer on October 17 2016 | Verified Purchase

Works as my practioner advised.

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Valued Product

Posted by iHerb Customer on May 3 2016 | Verified Purchase

Having undertaken readings into the research of the studies that have been done with Perfusia SR, I decided to try some. Along with other supplements there seems to be merit in the belief that it is good for the arteries and "Blood Pressure". I have found that it has contributed to lowering blood pressure for a family member. So it is definitely worth trying.

Thanks for your feedback!

Helping my husband with a bad heart

Posted by Rena61 on June 12 2015 | Verified Purchase

We are giving this a try, so far it seems to be helping with his mis-beats. He is not having them as frequently. Time will tell though.

Thanks for your feedback!