Blackstone Labs PCT V Review

Tribulus is at a full dose when three servings are taken, but the best evidence shows it does not reliably raise testosterone in men ^[1][2]. It may help erection scores without changing testosterone ^[3]. Trials in men with erection problems, infertile men and healthy young men found no hormone change ^[4][5][6]. Saw palmetto is at a full dose when two servings are taken. One trial of 99 men found that a sitosterol-enriched saw palmetto oil raised free testosterone and eased low-hormone symptoms ^[7]. Older work found 320 milligrams a day lowered the strong form of testosterone in prostate tissue ^[8], but another study found no change in blood levels after one week ^[9]. N-acetylcysteine is at 125 milligrams, below the 600 milligrams studied, and larger pooled analyses found it improved sperm but not testosterone ^[10][11]. Arimistane has no human studies, and the only research looked at a related compound in animals ^[12][13]. Alpha hydroxy laxogenin has no studies. Animal and cell studies are never counted.

Eight of the ten panelists spoke about saw palmetto, the main ingredient, and opinion is mixed but leans positive: several recommend it, mostly as a natural blocker of the hormone DHT to help with hair loss and prostate health. Doses came up twice, at 300 to 400 mg a day from one panelist and about 300 mg a day split into two or three doses from another, with low side effects noted, and one suggested a topical form and one liked taking it during the eating window when fasting. Others stayed neutral, and one found it helped reduce grogginess when taken on waking. Cautions came from two panelists: one said it will not move the needle on hair loss driven by androgens, and another said high doses can be a problem for people whose DHT is already low; one also linked it to raised liver enzymes in a hair product with several botanicals and another said it may only block some forms of the enzyme involved. Tribulus is a smaller ingredient in this product, and most of the panel who mentioned it doubt it raises testosterone, with one advising to stop using it.

The Tier 2 grade rests on saw palmetto, but its largest positive trial used a sitosterol-enriched oil, another used a herbal blend, and other studies found no change in blood hormones, while Tribulus and N-acetylcysteine showed no hormone effect, so the evidence is thin and mixed. So it is graded Tier 4, lower than the rules alone gave.

Combine with: For men seeking libido support, consider stacking with ashwagandha (KSM-66, 300-600 mg) to lower cortisol and support testosterone and sexual desire, Panax ginseng or maca root for sexual desire and performance, and fenugreek extract (e.g. Testofen) for libido and androgen support. Zinc (15-30 mg) and vitamin D3 (1,000-5,000 IU) with vitamin K2 correct common deficiencies that suppress testosterone, and boron (3-10 mg) may help free testosterone. L-citrulline or L-arginine can aid nitric oxide and blood flow for erectile quality. Saw palmetto or additional nettle root may complement prostate health. Anyone recently off a cycle of anabolic compounds should have bloodwork checked and consult a physician rather than relying on supplements alone.