ProstaStream: Prostate Support — and What the Trials Actually Found

ProstaStream is a herbal prostate support supplement in capsule form. The makers say 144 ingredients were screened before settling on saw palmetto berry, graviola leaf and a maitake/reishi/shiitake mushroom blend as the leads, with pygeum africanum, beta-sitosterol, cat's claw, lycopene, green tea and the minerals zinc, copper and selenium around them. It is gluten-free, non-GMO and stimulant-free, made in a GMP facility in the USA.

On two processes central to prostate research. Saw palmetto and beta-sitosterol act on 5-alpha reductase, the enzyme that converts testosterone to DHT — the hormone driving prostate tissue growth, and the same target as prescription BPH drugs. Pygeum, graviola, cat's claw and green tea address low-grade inflammation. Zinc, which concentrates in prostate tissue more than almost anywhere else in the body, supports normal function.

Here is the honest position. The two largest randomised trials of saw palmetto — STEP in the New England Journal of Medicine and CAMUS in JAMA — found it no better than placebo for urinary symptoms, even at triple dose. Beta-sitosterol and pygeum, both also in this formula, have held up better in reviews. The finished product has not been trialled. Expect modest support at best, and note that placebo response in urinary symptom trials runs at an unusually high 30–40%.

Yes, and this matters more than anything else on this page. Saw palmetto can lower PSA readings. PSA is one of the main screening tools for prostate cancer, and a falsely low result can delay detection. Tell your doctor you are taking this before any PSA test. That single sentence protects you; not saying it does not.

No, and pages claiming otherwise are making illegal disease claims. No dietary supplement is permitted to claim it cures benign prostatic hyperplasia or prevents prostate cancer, and none has been shown to. Some pages selling this product use exactly that language, which should make you more cautious about their other claims rather than less.

Saw palmetto berry, graviola leaf, a mushroom blend of maitake, reishi and shiitake, pygeum africanum bark, beta-sitosterol, cat's claw, lycopene from tomato, green tea, and the minerals zinc, copper and selenium. Individual amounts are not published — read the Supplement Facts panel when your order arrives.

Eight to twelve weeks of consistent use is the realistic window, and judging it after a few days tells you nothing. Track night-time bathroom trips per week from day one — it is countable, objective, and far more reliable than how you feel on a given morning.

Pricing follows the standard tiered structure: around $69 for a single bottle, roughly $59 per bottle on the three-bottle package and about $49 per bottle on the six-bottle package. Larger bundles include free US shipping. One-time payments with no subscription. Confirm at checkout, since prices change.

Generally well tolerated. Mild digestive upset is the usual complaint. Saw palmetto has mild antiplatelet activity, so it matters if you take an anticoagulant or have a bleeding disorder. Graviola is worth a specific mention — long-term high-dose use has been questioned on neurological safety grounds, and the amount in this blend is not published. Men allergic to plants in the Asteraceae family should check the label.

Check with your doctor or pharmacist first. The specific concerns are 5-alpha reductase inhibitors such as finasteride or dutasteride, where the mechanisms overlap and your doctor needs to know; anticoagulants, because saw palmetto has mild antiplatelet activity; and any medication where you are also monitoring PSA.

No. No dietary supplement is FDA approved — supplements are regulated as food, without pre-market review of whether they work. Manufacturing in a GMP-compliant facility describes production standards, not approval of the product or its claims.

Through the official website, where current pricing and the 60-day guarantee apply and returns are handled from an address in Aurora, Colorado. Buying elsewhere means no guarantee and no way to verify the batch or expiry.