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Life Extension, Prelox, Natural Sex For Men, 60 Tablets

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In Stock
  • Expiration Date: Oct 2018
  • Shipping Weight:
    0.24 lbs
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  • Product Code: LEX-13736
  • UPC Code: 737870137368
  • Package Quantity: 60 Tablets
  • Dimensions:
    2 x 2 x 3.6 in, 0.2 lbs
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Product Overview


  • Dietary Supplement
  • Non-GMO

The health of the vascular system is overlooked in the effort to support sexual function in aging men. Blood flow through the delicate lining of the arteries (the endothelium) is essential to sexual arousal. So it should come as no surprise that endothelial function is closely associated with male sexual capacity.

Life Extension has discovered supportive clinical research for a scientifically validated, natural dietary supplement formula to promote endothelial function and blood flow to the place men need it most — for maximum performance.

The ingredients found in Prelox® Natural Sex for Men have yielded compelling and highly satisfactory results in five independent clinical studies.

The patented blend of the following ingredients positively affects the male physiology in these three ways, to provide optimal support:

  1. Pycnogenol (standardized French maritime pine bark extract) activates endothelial nitric oxide synthase (eNO-S), the enzyme required to make nitric oxide. Nitric oxide (NO) relaxes the vessels that enable efficient blood flow — the key to healthy male sexual activity and overall vascular health. Pycnogenol further amplifies this relaxing effect by extending the amount of time nitric oxide remains in the bloodstream.
  2. L-Arginine is the biological precursor to nitric oxide synthesis in the endothelium. It interacts synergistically with Pycnogenol to sustain nitric oxide levels sufficient for healthy sexual function.
  3. Icariin, a natural botanical compound used in traditional Chinese medicine, has been shown to deactivate the enzyme normally responsible for winding down male sexual response, further promoting sustained activity.

Suggested Use

Read the entire label and follow the directions carefully prior to use.

Take two (2) tablets twice daily for the first two weeks and one (1) tablet twice daily thereafter, or as recommended by a healthcare practitioner. Can be taken with or without food.

Other Ingredients

Corn starch, maltodextrin, croscarmellose sodium, microcrystalline cellulose, vegetable stearate, silica, aqueous film coating (hydroxypropyl methylcellulose, glycerin, purified water).


Store tightly closed in a cool, dry place.

  • Keep out of reach of children.
  • Do not exceed recommended dose.
  • Do not purchase if outer seal is broken or damaged.
  • When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.
Supplement Facts
Serving Size: 1 Tablet
Amount Per Serving %Daily Value
Prelox Proprietary Blend
L-Arginine HCI, Aspartic Acid, Pycnogenol Dried French Maritime Pine extract (bark)
720 mg **
Icariin [from Natural Sex Epimedium sagittatum extract (aerial parts)] 30 mg **
**Daily Value not established.


iHerb Customer Reviews

Good Results

Posted by 5606266968757718190 on Aug 07, 2015

Worked after 3 days with out a doubt. I finished the pills with out reordering. And effects faded after about 4 days. After starting my second bottle, pills started working after 5 days. But I will continue taking 2 pills in the morning and 2 at night. Very satisfied with product. They give a very firm effect. Fiance loves them. Reason for the 4 stars instead of 5, Bottle instructs to only take one pill in morning and one pill in afternoon after 2 weeks. For me, effects are better if I continue to take 2 pills in morning and 2 in afternoon.

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Posted by Reviewer1668058 on May 28, 2013

Knew it's effective after running out. Libido is boosted with this. This is an add-on. Having been using at least 2 years. Stopped for while and then realized this is really really very important. Ahem, can stay longer. But most importantly, this has to be take twice a day, 2 tablets each time, and has to take at least 2 months to see the difference. And if you stopped for a while, you have to start all over again for at least 2 months before seeing any difference.

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No obvious discernable benefit yet

Posted by Reviewer2642796 on May 08, 2011

I have been taking the tablets for about two weeks but have yet to experience any real benefit. As each person's metabolism is different, I will continue to take it and hope for the best. If, after finishing the two bottles I ordered I still see no effect, I will discontinue taking it. No negative side effects to date.

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Life Extension Prelox

Posted by Reviewer2562279 on Jan 20, 2011

It is too early yet for me to say whether it is a good product or not as I have taken it only for 2 weeks so far but I have been very favourably impressed before by the quality of the LEF products.

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quality supplement

Posted by Reviewer1381553 on Mar 01, 2010

so far an excellent supplement for cardiovascular health---for sexual enhancement takes a while ican tell.

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