L-Carnitine is an amino acid-derived compound whose primary function is to transport fatty acids into the mitochondria—the energy-producing centers of cells—where they are converted into fuel. Although it is highly popular in the fitness industry, its effectiveness is a combination of scientifically proven benefits and common misconceptions. Key Proven Benefits Physical Performance and Recovery Reduced fatigue: Helps decrease muscle fatigue and lactate accumulation during prolonged exercise. Post-workout recovery: Reduces tissue damage and muscle soreness following intense training sessions, while supporting oxygen delivery to the muscles. Glycogen preservation: Helps conserve muscle glycogen stores and reduces the reliance on amino acids as an energy source. Cognitive Health and Nervous System Support Focus and memory: In its Acetyl-L-Carnitine (ALCAR) form, it readily crosses the blood-brain barrier, helping to support and protect brain function. Prevention of cognitive decline: Research suggests potential benefits in improving cognitive performance and reducing mental fatigue in older adults. Cardiovascular and General Health Cardiac support: Assists the heart's energy metabolism, helping to alleviate symptoms of angina and reduce post-heart attack mortality. Antioxidant activity: Helps lower inflammatory markers and combats free radicals within the body. The Rapid Weight Loss Myth Many people use L-Carnitine as a "miracle fat burner." However, scientific evidence provides a more accurate picture: It does not work without exercise: L-Carnitine only optimizes fat transport. Without a calorie deficit and physical activity that requires energy expenditure, supplementation is unlikely to produce meaningful results. Mixed scientific evidence: Reviews of clinical studies indicate that weight loss from L-Carnitine supplementation alone is generally modest and varies considerably between individuals. For research purposes only – Intended for qualified professionals conducting scientific research.

Tirz3patid3 , marketed as M0unjar0 , is a once-weekly injectable medication approved in Portugal (late 2024) for the treatment of type 2 diabetes mellitus and obesity/overweight . It functions as a dual agonist of the GIP and GLP-1 receptors , enhancing satiety and reducing appetite, which results in clinically significant weight loss . For research use only – Intended exclusively for qualified professionals conducting scientific research.

Ret4trutide  is a novel investigational therapeutic agent that functions as a triple receptor agonist targeting the GLP-1, GIP, and glucagon receptors for the management of obesity and type 2 diabetes mellitus. Clinical trial data indicate mean body weight reductions exceeding 24% over a 48-week period, demonstrating superior efficacy compared to currently available pharmacological interventions. Ret4trutide is currently undergoing late-stage clinical development (Phase III trials), with additional metabolic effects and therapeutic applications under active investigation, particularly in the context of metabolic optimization and energy homeostasis. For research use only – Intended exclusively for qualified professionals conducting scientific and clinical research.

Tirz3patid3 , marketed as M0unjar0 , is a once-weekly injectable medication approved in Portugal (late 2024) for the treatment of type 2 diabetes mellitus and obesity/overweight . It functions as a dual agonist of the GIP and GLP-1 receptors , enhancing satiety and reducing appetite, which results in clinically significant weight loss . For research use only – Intended exclusively for qualified professionals conducting scientific research.

Delta Sleep-Inducing Peptide (DSIP) is a naturally occurring neuropeptide composed of nine amino acids , known for its involvement in the regulation of deep, slow-wave (delta) sleep . Originally isolated in rabbits in the 1970s, DSIP has been studied for its effects on the central nervous system , particularly in relation to sleep–wake regulation, stress adaptation, and neurophysiological recovery . Key Characteristics and Areas of Investigation Sleep Regulation DSIP has been investigated for its potential role in promoting slow-wave (delta) sleep and supporting restorative sleep architecture , without producing the pronounced sedative effects typically associated with conventional hypnotic agents. Mechanism of Action Experimental research suggests that DSIP interacts with the central nervous system , influencing neurotransmitter and neuroendocrine signaling pathways involved in sleep regulation. Studies indicate that DSIP is capable of crossing the blood–brain barrier , enabling central activity. Stress Modulation Preclinical studies have explored DSIP's potential to modulate stress-response pathways , including effects on hypothalamic–pituitary–adrenal (HPA) axis activity and cortisol regulation, contributing to improved stress adaptation. Additional Research Areas DSIP has also been investigated in experimental contexts for: Neuroprotective effects Modulation of withdrawal-related symptoms in substance dependence models Support of daytime cognitive alertness following improved sleep quality Research Context and Regulatory Status DSIP used in research settings is synthetically produced and remains primarily a subject of laboratory and experimental investigation . It is not approved by the U.S. Food and Drug Administration (FDA), the European Medicines Agency (EMA), or national regulatory authorities for general clinical use in humans. The pharmacokinetics, long-term safety profile, and clinical efficacy of DSIP in humans have not been established through large-scale controlled clinical trials. ⚠️ DSIP is considered a sleep-regulating neuropeptide rather than a sedative agent , with research focusing on its influence on sleep pressure and circadian neurobiology rather than direct hypnotic effects. For research use only – Intended exclusively for qualified professionals conducting scientific research.

PT-141 (also known as Bremelanotide) is a synthetic peptide investigated for the treatment of sexual dysfunction , acting centrally on the brain to enhance sexual desire and arousal . It has been approved by the U.S. Food and Drug Administration (FDA) under the trade name Vyleesi® for the treatment of Hypoactive Sexual Desire Disorder (HSDD) in premenopausal women . Mechanism of Action Central Nervous System Activity Unlike traditional erectile dysfunction medications (e.g., sildenafil), which primarily act on the vascular system to increase peripheral blood flow, PT-141 exerts its effects at the level of the central nervous system (CNS) . Melanocortin Receptors PT-141 functions as an agonist of melanocortin receptors , specifically MC3R and MC4R , which are highly expressed in the hypothalamus , a key brain region involved in sexual behavior and motivation. Neurotransmitter Modulation Activation of these receptors promotes the release of neurotransmitters such as dopamine —associated with reward, motivation, and desire—and oxytocin , which plays a central role in sexual arousal, bonding, and emotional response . Sexual Desire and Physiological Response Through its central mechanism, PT-141 enhances sexual desire , which may secondarily improve physiological sexual responses , including increased genital blood flow and, in men, improved erectile response. For research use only – Intended exclusively for qualified professionals conducting scientific research.

Growth Hormone (GH) – Clinical and Regulatory Framework in the European Union Human Growth Hormone (GH) is used within the European Union as part of recombinant GH replacement therapies , strictly under medical prescription and for well-defined clinical indications . In Portugal and other EU Member States, GH is approved for use in children with medically diagnosed growth disorders and in adults with confirmed growth hormone deficiency , in accordance with guidance from the European Medicines Agency (EMA) and national health authorities. GH is administered via daily subcutaneous injections and exerts its effects by stimulating linear bone growth , metabolic regulation , and hepatic production of insulin-like growth factor 1 (IGF-1) . Key Regulatory Considerations Approved indications: Treatment of pediatric growth disorders and adult GH deficiency following comprehensive clinical evaluation. Treatment regimen: Daily subcutaneous administration under specialist medical supervision. Physiological effects: When used within approved indications, GH therapy is associated with improvements in body composition , metabolic function , and quality of life . Risks and warnings: Use outside approved indications or without medical supervision may result in serious adverse effects , including acromegaly, fluid retention, joint pain, and metabolic disturbances. ⚠️ GH is not approved for anti-aging, cosmetic, or performance-enhancement purposes. For research use only – Information intended for qualified professionals conducting scientific research.

TB-500 is a synthetic peptide analog of thymosin beta-4 , a naturally occurring protein involved in tissue regeneration, wound healing, and modulation of inflammatory processes . Thymosin beta-4 is endogenously present at elevated concentrations in injured tissues, where it plays a role in cellular repair mechanisms. What It Is and How It Works Composition and Origin: TB-500 is a synthetic fragment derived from the naturally occurring protein thymosin beta-4 , which is associated with tissue repair and cytoskeletal regulation. Mechanism of Action: In experimental models, TB-500 has been shown to promote cell migration and proliferation , angiogenesis (formation of new blood vessels) , and extracellular matrix organization , all of which are critical processes in tissue repair and regeneration. Focus on Regeneration: Unlike growth hormone–based compounds, TB-500 does not directly act on the endocrine axis. Its activity is considered primarily structural and functional , supporting systemic tissue recovery without directly stimulating muscle hypertrophy or hormonal secretion. Potential Areas of Investigation Preclinical and experimental research has explored TB-500 in relation to: Tissue repair following muscle, tendon, ligament, and joint injury Modulation of inflammatory responses during healing Improvement of tissue flexibility and functional recovery in models of chronic injury Use, Regulatory Status, and Safety Considerations TB-500 is not approved as a medicinal product for human use by regulatory authorities, including Infarmed (Portugal) , Anvisa (Brazil) , or the U.S. Food and Drug Administration (FDA) . It is commonly classified as a research-use compound . The long-term safety profile in humans has not been established , due to the absence of large-scale, controlled clinical trials. Reported observations from non-clinical contexts cannot be considered evidence of safety or efficacy. TB-500 is also listed as a prohibited substance in competitive sports and is included on anti-doping prohibited lists . For research use only – Intended exclusively for qualified professionals conducting scientific research.

Sermorelin is a synthetic peptide and an analog of growth hormone–releasing hormone (GHRH) that stimulates the pituitary gland to increase endogenous human growth hormone (hGH) secretion . In research settings, sermorelin has been investigated for its effects on physiological GH pulsatility , with exploratory interest in areas such as sleep regulation, energy metabolism, body composition, and age-related endocrine changes . Administered via subcutaneous injection in experimental protocols, sermorelin is studied as a potential alternative approach to direct GH administration, due to its mechanism of promoting natural GH release rather than exogenous hormone replacement. Observational research typically evaluates outcomes over periods ranging from 30 to 90 days , depending on study design. For research use only – Intended exclusively for qualified professionals conducting scientific research.

Melanotan II (MTII) is a synthetic peptide analog of the endogenous hormone α-melanocyte-stimulating hormone (α-MSH) , originally developed to stimulate cutaneous melanogenesis by increasing melanin production. In experimental contexts, MTII has also been observed to influence sexual arousal pathways , including effects on libido and erectile function, via central melanocortin receptor activation. However, cosmetic or non-clinical use of Melanotan II is not approved and has been associated with significant health risks , including nausea, hyperpigmentation and nevus formation, potential increased risk of melanoma, cardiovascular events, and cerebrovascular complications . Due to these concerns, MTII remains restricted to experimental investigation. For research use only – Intended exclusively for qualified professionals conducting scientific research.

Human chorionic gonadotropin (hCG) is a glycoprotein peptide hormone produced primarily during pregnancy to maintain the corpus luteum . In medical and research contexts, hCG has been used to treat infertility , induce ovulation in women , and stimulate testosterone production in hypogonadal men , frequently acting as a functional analog of luteinizing hormone (LH) . Recent research has also explored potential anti-inflammatory properties of hCG, with studies suggesting that the β-subunit of hCG may contribute to the modulation and control of inflammatory responses. For research use only – Intended exclusively for qualified professionals conducting scientific research.

Kisspeptin is a critical peptide hormone in human reproduction, functioning as a master regulator of the reproductive axis by stimulating gonadotropin-releasing hormone (GnRH) secretion from the hypothalamus. This, in turn, triggers the release of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) , which are essential for sex hormone production, pubertal onset, and fertility . Originally identified as a metastasis suppressor , kisspeptin is now known to play broader roles in mood regulation, behavior, and potentially metabolic processes . Its actions are mediated through the GPR54 (KISS1R) receptor within the KNDy neuronal network , and it is actively investigated for therapeutic applications in fertility-related disorders . For research use only – Intended exclusively for qualified professionals conducting scientific research.

Thymosin Alpha-1 (Tα1) is a naturally occurring 28–amino acid peptide derived from the thymus gland , playing a critical role in the regulation, enhancement, and restoration of immune function . It promotes the differentiation and maturation of T lymphocytes , as well as the activation of natural killer (NK) cells and dendritic cells , thereby supporting both innate and adaptive immune responses. Thymosin Alpha-1 has been extensively studied for its potential to strengthen immune defense mechanisms in the context of infectious diseases, cancer, and autoimmune disorders . For research use only – Intended exclusively for qualified professionals conducting scientific research.

Tesamorelin is a synthetic peptide and an analog of growth hormone–releasing hormone (GHRH) , developed to reduce excess visceral (abdominal) adipose tissue in patients with HIV-associated lipodystrophy . Approved by the U.S. Food and Drug Administration (FDA) in 2010 , tesamorelin acts by stimulating the pituitary gland to release growth hormone (GH) in a physiological manner , thereby contributing to fat redistribution and improvement of lipid profiles . For research use only – Intended exclusively for qualified professionals conducting scientific research.

SS-31 (Elamipretide) is a cutting-edge, mitochondria-targeted peptide designed to directly protect and restore mitochondrial energy function (ATP production) . By binding to cardiolipin within the inner mitochondrial membrane , SS-31 stabilizes mitochondrial structure, reduces oxidative stress , and mitigates mechanisms associated with cellular aging . It is under active investigation for potential applications in degenerative diseases, mitochondrial myopathies, and longevity research . For research use only – Intended exclusively for qualified professionals conducting scientific research.

Tirz3patid3 , marketed as M0unjar0 , is a once-weekly injectable medication approved in Portugal (late 2024) for the treatment of type 2 diabetes mellitus and obesity/overweight . It functions as a dual agonist of the GIP and GLP-1 receptors , enhancing satiety and reducing appetite, which results in clinically significant weight loss . For research use only – Intended exclusively for qualified professionals conducting scientific research. Lab Test

NAD⁺ (nicotinamide adenine dinucleotide) is an essential coenzyme present in all living cells, playing a critical role in cellular energy production (ATP synthesis), DNA repair, and metabolic function . As the biologically active form of vitamin B3, NAD⁺ levels decline with aging, which has driven scientific interest in NAD⁺ precursors such as NMN (nicotinamide mononucleotide) and NR (nicotinamide riboside) for their potential roles in enhancing cellular energy metabolism and supporting cellular longevity. For research use only – Intended exclusively for qualified professionals conducting scientific research.

5-Amino-1MQ (5-Amino-1-methylquinolinium) is a synthetic small molecule that functions as a selective inhibitor of the enzyme nicotinamide N-methyltransferase (NNMT) , an enzyme directly associated with adipose tissue accumulation and reduced metabolic efficiency . Current research investigates its role in metabolic regulation, energy expenditure, and adipose tissue biology through modulation of NNMT activity. For research use only – Intended exclusively for qualified professionals conducting scientific research. LAB TEST

BPC-157 (Body Protection Compound) is a synthetic peptide derived from a sequence found in human gastric juice, studied for its pronounced regenerative effects in tendons, muscles, ligaments, and the gastrointestinal tract . Preclinical research has investigated its role in tissue repair, cytoprotection, and modulation of inflammatory pathways , as well as its potential to support healing processes following tissue injury. Current research focuses on its anti-inflammatory properties, wound-healing mechanisms, and effects on tissue regeneration across various experimental models. For research use only – Intended exclusively for qualified professionals conducting scientific research. LAB TEST

Epitalon (also known as Epithalon) is a synthetic tetrapeptide ( Ala–Glu–Asp–Gly ) developed to mimic the natural pineal gland extract epithalamin , which has been associated with potential anti-aging and longevity-related effects . Epitalon is reported to act by stimulating telomerase activity , thereby contributing to telomere length maintenance, reduction of oxidative stress, and regulation of melatonin secretion. Current research focuses primarily on its potential roles in lifespan extension, sleep regulation, and enhancement of cellular repair mechanisms . For research use only – Intended exclusively for qualified professionals conducting scientific research.

Ret4trutide is a novel investigational therapeutic agent that functions as a triple receptor agonist targeting the GLP-1, GIP, and glucagon receptors for the management of obesity and type 2 diabetes mellitus. Clinical trial data indicate mean body weight reductions exceeding 24% over a 48-week period , demonstrating superior efficacy compared to currently available pharmacological interventions. Ret4trutide is currently undergoing late-stage clinical development (Phase III trials) , with additional metabolic effects and therapeutic applications under active investigation, particularly in the context of metabolic optimization and energy homeostasis. For research use only – Intended exclusively for qualified professionals conducting scientific and clinical research. Lab Test

GHK-Cu (glycyl-L-histidyl-L-lysine copper) is a naturally occurring human peptide–copper complex known for its significant regenerative and protective properties in skin and hair biology. By binding copper ions, GHK-Cu activates multiple cellular repair and remodeling pathways that naturally decline with aging. For research use only – Intended exclusively for professionals conducting scientific investigations. LAB TEST

MOTS-c is a promising mitochondrial-derived peptide, often referred to as an "exercise mimetic," due to its role in metabolic regulation, improvement of insulin sensitivity, and enhancement of cellular energy efficiency. It exerts its effects primarily through AMPK activation , promoting the utilization of fatty acids and glucose as energy substrates. MOTS-c is under active investigation for its potential applications in longevity research, weight management, and performance optimization . For research use only – Intended exclusively for qualified professionals conducting scientific research. LAB TEST