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Unleash Human Potential
Unleash Human Potential


Met-Enkephalin, also known as the opioid growth factor (OGF), is an important component of the OGF-OGF receptor (OGFr) axis, functioning in both animal and human cancer cell lines and tumors. Met 5-Enkephalin is a synthetic variant of the naturally occurring endogenous opioid peptide metenkephalin. It acts as an agonist for zeta- and delta-opioid receptors, and to a lesser extent, the mu-opioid receptor
Provided as a 20mg lyophilized vial
*Provided as a standard protocol, dose may vary depending on the condition of the patient.
*The dosage of Met 5-Enkephalin may be adjusted based on the individual’s response, medical history, and specific treatment goals.
Met 5-Enkephalin (MENK), also known as opioid growth factor (OGF), is an endogenous opioid peptide that has shown significant potential in pain modulation and cancer therapyMENK plays a crucial role in modulating pain perception. Clinical trials have investigated its analgesic effects in various settings:
MENK plays a crucial role in modulating pain perception. Clinical trials have investigated its analgesic effects in various settings:Acute Postoperative Pain: A clinical trial involving patients undergoing major abdominal surgery found that MENK significantly reduced postoperative pain intensity compared to placebo. This suggests that MENK may be a promising option for managing acute postoperative pain (PTides). Chronic Pain Management: Another trial assessed MENK’s efficacy in managing chronic pain conditions, including neuropathic and musculoskeletal pain. The results indicated significant reductions in pain levels among participants receiving MENK, highlighting its potential as a chronic pain treatment
Cancer Therapy: MENK has also been studied for its therapeutic potential in cancer treatment: Pancreatic Cancer: A phase II clinical trial involving patients with advanced pancreatic cancer who had failed standard chemotherapy showed that MENK treatment led to a three-fold increase in median survival time compared to untreated patients. Additionally, tumor size was stabilized or reduced in 62% of the patients, and no adverse effects on blood chemistry were observed, indicating the safety and potential efficacy of MENK in cancer therapy.
Daily MK-677 significantly increased GH and IGF-I levels to those of healthy young adults without serious adverse effects. With placebo, mean (95% Cl) FFM decreased -0.5 (-1.1 to 0.2) kg, however, FFM increased 1.1 (0.7 to 1.5) kg with MK-677 (P<0.001, MK-677 vs. placebo); body cell mass as reflected by intracellular water decreased -1.0 (-2.1 […]
Recent histopathological investigations in patients with hepatitis suggested possible involvement of Met-enkephalin and its receptors in the pathophysiology of hepatitis. Consequently, we evaluated the potential hepatoprotective effects of this endogenous opioid pentapeptide in the experimental model of acetaminophen induced hepatotoxicity in male CBA mice.
THE discovery by Hughes et al.1 that peptides (the enkephalins) could be the endogenous agonists of opiates in brain represents a challenge to medical chemistry both in its fundamental aspects and for the possible development of new therapeutic approaches. To understand how non-peptidic substances belonging to various chemical classes can mimic the action of the […]
Unleash Human Potential