Ara 290 and HGH Interaction: Synergistic | Peptide Database

Join others researching Phenylpiracetam — share findings, ask questions, and learn from real experiences Phenylpiracetam (also known as Phenotropil, Carphedon, or Fonturacetam) is a phenylated derivative of piracetam developed in Russia in 1983, originally for Soviet cosmonauts to enhance cognitive function, physical stamina, and cold tolerance during space missions. The addition of a phenyl group to piracetam's pyrrolidone nucleus fundamentally changes the compound's pharmacological profile -- it crosses the blood-brain barrier more readily, has significantly greater affinity for multiple neurotransmitter systems, and exhibits pronounced psychostimulant and physical performance-enhancing properties absent in piracetam. Phenylpiracetam was approved and marketed in Russia as Phenotropil for cognitive impairment, asthenia, and convulsive disorders until its manufacturer ceased production. It gained notoriety in the sporting world after the World Anti-Doping Agency (WADA) added it to the prohibited substances list following its detection in several Olympic athletes, confirming its reputation as a legitimate performance enhancer. One of its most distinctive properties is the enhancement of cold tolerance, a trait that directly reflects its origins as a cosmonaut support compound and has been demonstrated in animal models of hypothermia. Phenylpiracetam modulates multiple neurotransmitter systems, which accounts for its broad spectrum of cognitive and physical effects. Like other racetams, it acts as a positive allosteric modulator of AMPA receptors, enhancing glutamatergic transmission and facilitating long-term potentiation in hippocampal circuits critical for memory formation. However, unlike piracetam, phenylpiracetam also significantly affects dopaminergic and noradrenergic signaling -- it increases the density of dopamine D1, D2, and D3 receptors and noradrenaline receptors in the striatum and other brain regions, which underpins its stimulant, mood-elevating, and motivation-enhancing properties. It also modulates nicotinic acetylcholine receptors and NMDA-type glutamate receptors, contributing to its procognitive effects. The phenyl group increases lipophilicity, allowing faster and more complete penetration of the blood-brain barrier compared to piracetam. Phenylpiracetam also demonstrates anticonvulsant activity and has been shown to reduce the threshold for cold-induced stress responses, likely through modulation of hypothalamic thermoregulatory circuits and peripheral adrenergic mechanisms. The compound's physical performance-enhancing effects are attributed to increased noradrenergic and dopaminergic tone, enhanced muscular endurance, and reduced perception of effort and fatigue.

Originally FDA-approved for testosterone replacement in hypogonadal men. Fluoxymesterone was used to treat delayed puberty and androgen deficiency, though it has been almost entirely replaced by injectable testosterone and transdermal preparations due to its hepatotoxicity and unfavorable side effect profile. FDA-approved for palliative treatment of androgen-responsive, advanced inoperable breast cancer in women, typically 1-5 years post-menopause. This indication is rarely used today due to the availability of aromatase inhibitors and targeted therapies with superior safety profiles. Used by powerlifters and strength athletes in the final 2-4 weeks before a competition to maximize strength output, aggression, and neural drive without adding bodyweight or water retention. The compound's effects on the central nervous system produce a pronounced increase in competitive intensity. Employed by competitive bodybuilders in the last 2-4 weeks before stage to enhance muscle hardness, vascularity, and visual density without water retention. The non-aromatizing nature ensures no subcutaneous water accumulation during the critical final phase of contest preparation. Historically used by fighters and combat sport athletes to increase aggression and power output while staying within a weight class, as it adds no water weight. This use carries significant ethical and regulatory concerns given anti-doping testing.