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Prosvent is natural formulation containing herbs and nutrients proven to improve prostate health. It is intended to help men with prostate problems improve their sexual performance and relieve urinary difficulties. What are the active ingredients of Prosvent and how do they work? How effective is Prosvent for relieving these symptoms of prostate problems? Read on to find out.
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Prosvent is an oral formulation of herbs and nutrients created by Dr. Larry May for improving prostate health.

However, the manufacturer actively advertises Prosvent for relieving urinary difficulties and improving sexual performance rather than a substitute for drugs used in the treatment of prostate problems.

With each order of Prosvent, the buyer receives 60-day worth of the supplement even though the manufacturer provides a 30-day money-back guarantee. Also included with each purchase is a free bottle of Provigor, a sexual enhancer for men from the same manufacturer, and a free copy of the book, Dr. May’s Complete Guide to Prostate Health.

Prosvent is formulated as capsules and the recommended dosage is 1 capsule per day.

Although Prosvent LLC (the manufacturer) promises that this supplement has no side effects, that is unlikely because side effects have been reported for some of the herbs included in the product. However, these side effects are mostly mild and usually gastrointestinal complaints.

Furthermore, some of the herbs in Prosvent may interact with certain drugs and supplements.

Drugs that may interact with Prosvent include non-steroidal anti-inflammatory drugs (NSAIDs) such as aspirin, anticoagulants such as warfarin and oral contraceptives. Therefore, Prosvent should not be used while taking these drugs.

In addition, those already taking drugs for heart diseases, diabetes and other serious conditions should consult their doctors before starting on Prosvent.

The Active Ingredients of Prosvent

Saw Palmetto Extract

Saw palmetto or Serenoa repens is a small palm. Its fruits are eaten as food and also used for its medicinal benefits.

The major phytochemicals in saw palmetto responsible for most of its medicinal benefits are fatty acids and sterols. Saw palmetto extracts are standardized by these groups of phytochemicals and, therefore, required to contain 85 - 95% of these phytochemicals.

How Saw Palmetto Improves Prostate Health
  • By inhibiting the conversion of testosterone to dihydrotestosterone (DHT) – the phytochemicals in saw palmetto inhibit the enzymes, 5-alpha reductase type 1 and type 2. These enzymes are responsible for converting testosterone to DHT. The prolonged stimulation of the prostate by DHT is one of the causes of prostate enlargement. Therefore, blocking these enzymes reduces the production of DHT and can help shrink an enlarged prostate.
  • By preventing androgens especially DHT from binding to androgen receptors – Androgen hormones need to bind to androgen receptors at their sites of action. Saw palmetto can block DHT from binding to the androgen receptors in the prostate, and therefore, prevent prostate enlargement and relieve its symptoms
  • By contracting the smooth muscles of the urethral sphincter – Saw palmetto can increase the pressure exerted by the urethra sphincter and help void the bladder completely. This action can relieve the urinary difficulties associated with prostate problems.

Pygeum Extract

Pygeum is an evergreen tree native to Sub-Saharan Africa. Its herbal extract is used in traditional medicine to treat hair loss, kidney diseases, inflammations, erectile dysfunction and prostate problems.

The major phytochemicals in pygeum can improve the prostate in different ways.

Major Phytochemicals in Pygeum
  • Triterpenes
  • Ferulic acid and its esters
  • Phytosterols e.g. beta-sitosterol
  • Tannins

The phytosterols in pygeum can reduce the production of androgen hormones by making their precursors unavailable. For example, these sterols lower the level of cholesterol, a precursor of androgens.

By blocking the syntheses of these hormones, pygeum lowers the amount of testosterone and DHT reaching the prostate.

The phytosterols and ferulic acid esters of pygeum work in this way and can, therefore, prevent the enlargement of the prostate and relieve the urinary difficulties associated with benign prostatic hyperplasia (BPH).

Another means by which the phytosterols in pygeum improve prostate health is by inhibiting pro-inflammatory prostaglandins. The triterpenes also possess anti-inflammatory properties but act by a different mechanism. Therefore, both groups of phytochemicals can help shrink the prostate by preventing and/or relieving inflammation of the tissues of the organ.


Stinging Nettle Extract

Stinging nettle is the most popular member of the nettle family. It is a food and also a medicinal herb.

The root extract of stinging nettle is used in the treatment of BPH as well as other medical conditions such as edema, arthritis, anemia and high blood pressure.

The root extract contains active phytochemicals such as sterols, fatty acids, flavonoids, lignans and lectins. Therefore, stinging nettle can improve prostate health in multiple ways.

How Stinging Nettle Works
  • Blocking the transportation of testosterone to the prostate – SHBG (sex hormone binding globulin) is a glycoprotein responsible for transporting testosterone, estrogens and their metabolites to their sites of action. By inhibiting this glycoprotein, stinging nettle reduces the level of testosterone in the prostate.
  • Blocking the conversion of testosterone to DHT – By inhibiting the enzyme, 5-alpha reductase, stinging nettle blocks the conversion of testosterone to DHT, and therefore, reduces the effects of DHT on the prostate.
  • Blocking androgen receptors and preventing androgen hormones from binding to them – Before androgens can act, they need to bind to androgen receptors. Stinging nettle blocks these receptors and prevent androgens from overstimulating the prostate.
  • Inhibiting estrogens – Estrogen has been shown to prolong the activity of DHT in the prostate by protecting it from enzymatic breakdown. Therefore, stinging nettle can further reduce androgen stimulation of the prostate by inhibiting estrogen.

Black Pepper Extract

There is no clinical proof that black pepper can help improve prostate health. Therefore, this ingredient is included in Prosvent to improve the absorption of the other active ingredients.

Piperine, the major phytochemical in black pepper, has been shown to act in this way and it is commonly included in herbal supplements for this purpose.


Pumpkin Seed Oil

Pumpkin seed oil is included in Prosvent because of its sterol and fatty acid content. Like the other herbs discussed above, pumpkin seed oil can also reduce prostate enlargement and inflammation.

The chief sterol in pumpkin seed oil is beta sitosterol and the fatty acids include omega-3 and omega-6 fatty acids. The fatty acids block the production and action of proinflammatory factors in the prostate while beta sitosterol reduces the levels of androgen hormones by lowering cholesterol levels.


Lycopene is a potent antioxidant found in certain fruits and vegetables. Although it is commonly associated with tomatoes, gac (a plant native to Southeast Asia) is an even richer source of the phytochemical.

Lycopene is a carotene, a plant pigment, a non-toxic food coloring and a medicinal agent.

Its antioxidant property can help prevent the kind of oxidative damage to the prostate that results in inflammation and enlargement of the organ.

In addition, lycopene can also induce regulatory proteins in the prostate. These proteins are responsible for regulating the growth of prostate cells. When their production falls, prostate cells experience rapid and uncontrolled growth.

This influence on regulatory proteins is one mechanism by which lycopene lowers the risk of cancer.

Overall, lycopene is powerful enough to prevent all types of prostate problems, and even improve general health.

Vitamins D and E

Vitamin D is the only vitamin naturally produced in the body, and its health benefits are wide and varied. Some of the medicinal properties of vitamin D are its antioxidant, anti-inflammatory and immunomodulatory properties. All of these are beneficial to the prostate.

Vitamin D has been proven to inhibit the proliferation of prostate cells and reduce the risk of prostate cancer.

Vitamin E is also an antioxidant. Therefore, it shares some of the mechanisms of action of vitamin D.

In addition, vitamin E has been shown to block androgen receptors in the prostate and, therefore, prevent the androgen stimulation of the organ. Furthermore, vitamin E lowers the level of PSA (prostate-specific antigen), a protein found in small amounts in healthy prostates and in high levels in enlarged prostates.

Zinc and Selenium

Zinc is also natively found in the prostate but in high amounts. In fact, the prostate contains 500 – 1,000 times more zinc than the blood.

Currently, it is unclear what roles zinc plays in the prostate but it is clear enough that it is essential to prostate health.

The role of selenium, on the other hand, is well understood. Selenium is used by the body to make a family of antioxidant enzymes. Therefore, selenium can contribute to the antioxidant protection of the prostate.

Other ways by which selenium can improve prostate health include lowering PSA levels and inhibiting pro-inflammatory prostaglandins.

Therefore, selenium can reduce/prevent prostate enlargement and inflammation.

Is Prosvent Effective?

Although Prosvent contains the right ingredients for treating prostate problems, it is most likely ineffective for treating prostate cancer and should not serve as the primary medication in the treatment of BPH.

In fact, the product website advertises Prosvent solely for improving the urinary and sexual difficulties associated with prostate problems. Still, there is no way Prosvent can relieve these symptoms of prostate problems without acting on the prostate.

Most of the active ingredients of Prosvent are clinically proven to improve prostate health and relieve the symptoms of prostate disorders. But is their combination in and the formulation of Prosvent effective? Not for most of its users.

User testimonies online show that Prosvent is not as effective as some other dietary supplements for improving prostate health.

Even though Dr. Larry May promised that most men will see dramatic improvements within the first month, at least half of past users still experienced urinary difficulties after 30 days.

In a rather curious twist, the manufacturer advised some of the users who complained to finish the 60-day supply before judging the efficacy of Prosvent. When these users took another month’s worth of Prosvent and still complained, they were told that the 30-day money-back guarantee had expired.

Such failed promises do not inspire confidence in Prosvent, and many users are certain that they were scammed. On the other hand, there are users who experienced the promised improvements and they would argue otherwise.





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