Black pepper fruit extract ties the formula together by enhancing the bioavailability of every ingredient, ensuring maximum effect from a focused, 4-ingredient formula
A different randomized, double-blind, placebo-controlled clinical trial demonstrated that daily oral administration of equal-lower doses (5 g/day) of l-ARG for a shorter period (6 weeks) compared to the current study induced a significant subjective improvement of penile erectile function, as assessed through standardized OLeary questionnaire for ED, although without a significant improvement of penile vascular parameters assessed by basal PDU, in 29 middle-aged/elderly men affected by organic ED of mixed etiology and unknown severity, therefore reporting, in line with the results of the current study, a discrepancy between subjective and objective improvement in erectile function [28]
Preclinical studies suggest it could have applications in Alzheimers disease, dementia, Parkinsons disease, and traumatic brain injury, while biohackers and peptide researchers are exploring it as a nootropic for memory and learning enhancement
2017;12:e0175222
Their regulatory status has been changing through 2025 and 2026 as the FDA reviews how these substances are handled, so current availability is confirmed at the time of your visit