更新：兩個治療前列腺肥大的膳食補充劑(Dietary Supplement)

1. Saw Palmetto (一種植物）。（typical dose: 320 mg per day of extract standardized to 85% to 95% fatty acids）

2. Beta-Sitosterol（臨床試驗中是 30 mg to 91 mg daily）

 

好幾個網站都說第二個療效更好：

a) consumerlab.com

b) Larry King (見 prostatereport.com) 說Saw Palmetto, lycopene 根本就是垃圾！Beta-sitosterol 是唯一有效的。他們推薦的第一名藥物是ProstaGennix。 但是網頁底部的一句話："Larry King is a paid endorser of ProstaGenix"，讓人morbid!

c) kp.org 也是說 Saw Palmetto 沒有足夠證據。但是對Beta-sitosterol卻有如下評論:

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What is beta-sitosterol used for?

Beta-sitosterol is said to lower cholesterol levels and reduce the risk of some cancers. It also is said to relieve symptoms of benign prostatic hyperplasia (BPH) . How beta-sitosterol works is not known. It may be related to cholesterol metabolism or anti-inflammatory effects.

A review of studies done on beta-sitosterol showed that men who took it had fewer symptoms than men who took a placebo . Symptoms were measured using the American Urological Association (AUA) symptom index . Men who took beta-sitosterol also had a better urine flow rate then men who took a placebo. footnote1

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還有，用量必須達到臨床試驗使用的典型劑量（所謂的“STANDARDIZED”。比如，Saw Palmetto Extract 應該是達到85% （成分重量）才能有效。所以買時要看好。因為不是所有的產品都達到這個劑量！

 

https://www.consumerlab.com/reviews/Prostate_Supplements-Beta-Sitosterol-Phytosterols-Saw_Palmetto/sawpalmetto/

 

https://www.nutraingredients-usa.com/Article/2003/05/21/Not-all-saw-palmetto-lives-up-to-its-name