Semax is one of those subjects where the details matter more than the headlines. This page pulls together the background, the mechanisms, and the practical points readers ask about most.
Updated 2026-05-11. Numbers and descriptions here follow the published literature rather than marketing material.
Semax is a synthetic heptapeptide developed in the Soviet Union during the 1980s by researchers at the Institute of Molecular Genetics in Moscow. It was designed as a truncated analog of adrenocorticotropic hormone, retaining only the fragment spanning residues four through ten. Investigators sought a peptide that would preserve the cognitive effects associated with ACTH while eliminating the hormonal stimulation of the adrenal cortex. The compound entered clinical use in Russia during the following decade.
Russian regulatory authorities approved the peptide for nasal administration, and it remains listed in the national pharmacopoeia under several trade names. Documented indications include acute ischemic stroke, transient ischemic attacks, traumatic brain injury, and certain ophthalmological and neurological conditions. Physicians also prescribe it for cognitive complaints in older patients, although the evidence base for that use is thinner. Outside Russia and a few neighboring states, the substance is not an approved medicine and is sold instead as a research chemical.
Pharmacological accounts link semax to melanocortin signalling and to modulation of neurotrophic factor expression, particularly brain-derived neurotrophic factor and nerve growth factor. Much of this evidence comes from rodent studies using intranasal delivery, a route chosen because it allows peptides to reach the central nervous system with limited systemic exposure. Whether the same mechanisms operate in humans at comparable magnitude remains an open question. The precise receptor or receptors responsible for the reported behavioural and neuroprotective effects have not been conclusively identified.
Clinical reports describe use in ischaemic stroke, transient ischaemic attack, optic nerve conditions, and cognitive complaints, but most of these studies are small and were conducted in a single region. Systematic reviews have generally described the evidence base as limited in size and variable in methodological quality. Randomised controlled data suitable for international regulatory assessment are scarce. As a result, major treatment guidelines outside Russia do not include the peptide, and interest in it remains largely research-driven rather than routine clinical.
Semax is a synthetic heptapeptide with the sequence Met-Glu-His-Phe-Pro-Gly-Pro. It is described in the literature as an analogue of the ACTH(4–10) fragment, a short N-terminal portion of adrenocorticotropic hormone that retains some neurotropic activity without the full hormonal effects of the parent peptide. The molecule carries a methionine residue at the N-terminus and two proline residues near the C-terminus, features that shape both its interactions with receptor systems and its chemical stability. The free peptide corresponds to the formula C37H51N9O10S and a molecular mass near 813.9 Da.
| Property | Value | Notes |
|---|---|---|
| Molecular class | Synthetic heptapeptide | Analog of an ACTH fragment |
| Amino acid length | Seven residues | Met-Glu-His-Phe-Pro-Gly-Pro |
| Origin | Moscow, 1980s | Institute of Molecular Genetics |
| Approved regions | Russia and some neighboring states | Not cleared in Western markets |
| Common trade names | Multiple national brands | Sold as a nasal formulation |
Semax 是一种人工合成的七肽，氨基酸序列为 Met-Glu-His-Phe-Pro-Gly-Pro，单字母缩写记作 MEHFPGP。它被归类为促肾上腺皮质激素片段 ACTH(4-10) 的结构类似物，但并不天然存在于生物体内。母体片段 ACTH(4-10) 的序列为 Met-Glu-His-Phe-Arg-Trp-Gly，Semax 替换了中间两个残基，并在羧基端延长了 Pro-Gly-Pro 三肽。这种延长被普遍认为能提升分子对肽酶的耐受性。
该化合物于二十世纪八十年代在俄罗斯被开发，相关工作由俄罗斯科学院分子遗传学研究所的研究团队主导。开发目标并非复制 ACTH 的完整激素活性，而是寻找保留其神经作用方向、同时去除促肾上腺皮质激素释放效应的短肽片段。研究记录显示，这一方向促成了多个相关短肽的合成与筛选，而 Semax 是其中被研究最广泛的一个。当地文献常以 Семакс 这一名称指代它。
当时的短肽研究普遍关注能否穿越血脑屏障、在低剂量下产生中枢效应，Semax 属于这一路线。鼻内给药是其主要使用方式，俄语文献报道的适应症涵盖缺血性卒中、短暂性脑缺血发作、认知功能减退以及视神经病变。这些研究大多发表在当地期刊上，样本规模与终点设置同西方试验惯例存在差异，国际同行对其临床证据的强度看法不一。
各国监管态度分化明显。俄罗斯按处方药管理，部分东欧国家留有使用记录；欧盟与美国未批准其作为药物上市，市面流通品通常标注为研究用化学品。身份差异意味着标示含量、纯度与无菌性缺少统一核查。体育领域还牵涉反兴奋剂名录，跨境携带则受目的地药品法规约束。
=== Warehousing and distribution === Warehousing and distribution are major logistics segments, and are among the fastest-growing logistics services in South Africa. Numerous developers have constructed large (30,000 sqm+) warehouse facilities along the N3 and N1 corridors, to facilitate the storage and distribution of consumer goods, including those from e-commerce companies. These warehouses support a retail sector that in 2024 was worth approximately R1.4 trillion. The presence of e-commerce companies such as Takealot, Amazon, AliExpress, Temu, and Shein continues to grow in South Africa, and these companies make extensive use of warehousing. South Africa's food storage capacity as a proportion of production is high, and only slightly behind China's, despite having a population that is 21 times smaller. Warehousing in South Africa is shifting from passive storage to technology-intensive logistics operations. Automation, inventory optimization, and e-commerce fulfilment are driving value-added services beyond traditional storage. Cold chain storage in South Africa is growing, supported by the food and pharmaceutical industries. South Africa's cold chain storage sector is the largest and most mature in Africa. As of 2025, prime rent for warehousing averaged around R100 per sqm, and the average yield (return) was 8.25%. Warehouses tend to be concentrated in and around South Africa's largest cities - most notably Durban, Johannesburg, and Cape Town. The primary use varies between cities.
=== Rebel diplomacy === The far-left guerrilla group Revolutionary Armed Forces of Colombia (FARC), was one of the most powerful and violent groups the Colombian government had to deal with during the Colombian Conflict. They gained such strength and influence that they started to look for mechanisms to help them grow even stronger; in that sense, they developed a "Rebel Diplomacy", understood as a rebel group's conduct of foreign affairs during the development civil war for the purpose of advancing its military and political objectives. This diplomacy was used as their strategy for engaging with various international actors as they sought any type of support during various stages of the conflict. Among these international actors are the governments of other countries, non-governmental organizations (NGOs), and multinational corporations. The guerrilla group made intelligent and strategic use of social networks as a means through which to offer the international public who was witnessing the conflict a vision of their own narrative of the conflict, and to present themselves as a credible and preferable alternative to the Colombian government. To that end, FARC designed a web page and obtained support from press agencies and independent digital media, mostly European. Rebel diplomacy often emerges as a kind of counter-diplomacy aimed at discrediting the State against the insurgent group it is fighting; it is a way of taking the battle to the political arena and waging it at an international scale.
==== 1980s–early 1990s ==== The modern use of the term designer drug was coined in the 1980s to refer to various synthetic opioid drugs, based mostly on the fentanyl molecule (such as α-methylfentanyl). The term gained widespread popularity when MDMA (ecstasy) experienced a popularity boom in the mid-1980s. When the term was coined in the 1980s, a wide range of narcotics were being sold as heroin on the black market. Many were based on fentanyl or meperidine. One, MPPP, was found in some cases to contain an impurity called MPTP, which caused brain damage that could result in a syndrome identical to late stage Parkinson's disease, from only a single dose. Other problems were highly potent fentanyl analogues that caused many accidental overdoses. Because the government was powerless to prosecute people for these drugs until after they had been marketed successfully, laws were passed to give the DEA power to emergency schedule chemicals for a year, with an optional 6-month extension, while gathering evidence to justify permanent scheduling, as well as the analogue laws mentioned previously. Emergency-scheduling power was used for the first time for MDMA. In this case, the DEA scheduled MDMA as a Schedule I drug and retained this classification after review, even though their own judge ruled that MDMA should be classified Schedule III on the basis of its demonstrated uses in medicine. The emergency scheduling power has subsequently been used for a variety of other drugs including 2C-B, AMT, and BZP.
Sources: en.wikipedia.org
=== Size === Bottles tend to come in standard sizes, often 4 US fluid ounces (120 ml) and 8 US fluid ounces (240 ml). Smaller bottles may be lighter and easier to hold and are often used with younger, smaller infants. There are concerns that larger bottles may lead to over-feeding, since parents are likely to encourage a baby to "finish" a bottle during a feeding. The height-to-width ratio of bottles is high (relative to adult cups) because it is needed to ensure the contents flood the teat when used at normal angles; otherwise the baby will drink air. However, if the bottle is too tall, it easily tips. There are asymmetric bottles that ensure the contents flood the teat if the bottle is held at a certain direction.
Parathyroid hormone/parathyroid hormone-related peptide receptor, also known as parathyroid hormone 1 receptor (PTH1R), is a protein that in humans is encoded by the PTH1R gene. PTH1R functions as a receptor for parathyroid hormone (PTH) and for parathyroid hormone-related protein (PTHrP), also called parathyroid hormone-like hormone (PTHLH).
== Kingdom of Holland (1806–1810) == In 1795, the Republic was overthrown by the French Republic and replaced with the Batavian Republic. In 1806 Napoleon abolished the new republic and made his brother King of Holland. However, in 1810 Napoleon invaded the Netherlands and annexed the country to the French Empire.
Sources: en.wikipedia.org
Since calculations generally predict that oganesson should not be particularly inert due to relativistic effects, and may not even be a gas at room temperature if it could be produced in bulk, its status as a noble gas is often questioned in this context. Furthermore, national variations are sometimes encountered: in Japan, alkaline earth metals often do not include beryllium and magnesium as their behaviour is different from the heavier group 2 metals.
According to Neff, self-compassion consists of three main positive components and their negative counterparts: Self-Kindness versus Self-Judgment, Common Humanity versus Isolation and Mindfulness versus Over-Identification. Furthermore, there is evidence from a study by Shin & Lin suggesting specific components of self-compassion can predict specific dimensions of positive mental health (emotional, social, and psychological well-being).
=== D11AX Other dermatologicals === D11AX01 Minoxidil D11AX02 Gamolenic acid D11AX03 Calcium gluconate D11AX04 Lithium succinate D11AX05 Magnesium sulfate D11AX06 Mequinol D11AX08 Tiratricol D11AX09 Oxaceprol D11AX10 Finasteride D11AX11 Hydroquinone D11AX12 Pyrithione zinc D11AX13 Monobenzone D11AX16 Eflornithine D11AX18 Diclofenac D11AX21 Brimonidine D11AX22 Ivermectin D11AX23 Aminobenzoate potassium D11AX24 Deoxycholic acid D11AX25 Hydrogen peroxide D11AX26 Caffeine D11AX27 Oxymetazoline D11AX52 Gamolenic acid, combinations D11AX57 Collagen, combinations QD11AX90 Benzoylperoxide
=== South Africa === In August 1996, Chick-fil-A opened its first location outside of North America by building a restaurant in Durban, South Africa. A second location was opened in Johannesburg in November 1997. Neither was profitable, and they were closed in 2001.
Sources: en.wikipedia.org
It originated at the Institute of Molecular Genetics in Moscow during the 1980s. The work was carried out by a Russian research group that specialized in peptide neuropharmacology.
It is registered as a medicine in Russia and has been used clinically there for decades. No regulatory agency in Western Europe or North America has approved it for any indication.
Semax corresponds to the four-to-ten fragment of adrenocorticotropic hormone. Because it omits the first three residues, it lacks the adrenal-stimulating action of the full hormone.
It is described as a synthetic analogue of the ACTH(4–10) fragment, a short segment of adrenocorticotropic hormone. Its sequence differs from that fragment and includes two proline residues, which influence stability and behaviour in solution.