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Semax Spray is an innovative nasal spray that contains the core ingredient of synthetic heptapeptide (Semax). This ingredient is derived from a fragment of adrenocorticotropic hormone but has completely altered its original hormonal activity, transforming into a potent neuroprotective and mental stimulant. When administered through nasal inhalation, it can quickly pass through the blood-brain barrier and directly act on the central nervous system. It achieves multiple effects by increasing the level of brain-derived neurotrophic factor (BDNF), regulating neurotransmitters, and enhancing the tolerance of brain cells to hypoxia and stress. Its clinical value mainly lies in significantly enhancing cognitive functions, including improving memory formation, increasing attention concentration, and accelerating thinking processes.
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Semax COA
Analysis of the product in Ocular Health Applications
As a peptide preparation for nasal administration, Semax Spray has become an important dosage form for ocular neuroprotection thanks to its convenient use and efficient transmucosal absorption properties. By targeting and regulating the expression of nerve growth factor, it provides targeted intervention for ocular diseases associated with optic nerve damage and plays a key role in the adjuvant treatment of conditions such as optic atrophy and glaucoma and the improvement of visual function. The detailed applications are as follows:
Core Mechanism of Targeted Support for Optic Nerve Health
The core of it's ocular protective effect lies in its targeted action on ocular nerve tissue after nasal absorption, which accurately elevates the expression level of nerve growth factor (NGF) in the eye. NGF is a critical substance for the survival, repair and regeneration of optic nerve cells. When optic nerve cells are damaged due to ocular pathological changes or injuries, the NGF level drops significantly, which in turn leads to the deterioration of optic nerve function.
After rapid absorption through the nasal mucosa, it can cross the blood-ocular barrier to reach the optic nerve tissue, stimulate the synthesis and release of NGF, provide nutritional support for damaged optic nerve fibers, and promote the repair and regeneration of injured nerve cells. Meanwhile, it enhances the activity and tolerance of optic nerve cells, fundamentally maintaining the structural and functional integrity of the optic nerve and laying a foundation for the improvement of visual function.
Clinical Application Value for Ocular Diseases
In the clinical intervention of ocular diseases, it is mainly focused on conditions characterized by optic nerve damage as the core pathological feature, such as optic atrophy and glaucoma. For optic atrophy, regardless of the causes being primary, secondary or traumatic, this preparation can delay the process of nerve fiber atrophy by promoting optic nerve repair, improve symptoms such as visual loss and visual field defect in patients, and enhance visual quality.
For glaucoma, in addition to alleviating the progressive optic nerve damage caused by high intraocular pressure through NGF-mediated neuroprotective effects, it can also assist in improving ocular microcirculation and relieving the ischemia and hypoxia of optic nerve tissue, providing neuroprotective support for the comprehensive treatment of glaucoma. In addition, nasal administration of it does not require direct contact with the eye, which reduces the risk of ocular irritation and infection. With its convenience and high patient compliance, it is suitable for the clinical demand of long-term ocular neuroprotection and has become one of the preferred dosage forms for the adjuvant treatment of ocular diseases related to optic nerve damage.
Analysis of the product in the Adjuvant Treatment of ADHD
The pathogenesis of ADHD is closely associated with the imbalance of neurotransmitters such as dopamine and norepinephrine in the brain. Insufficient secretion or transmission disorders of these transmitters directly impair functions including attention regulation and behavioral inhibition. After rapid absorption through the nasal mucosa, it can cross the blood-brain barrier and act on brain regions related to attention and behavioral regulation-such as the prefrontal cortex and striatum-in a targeted manner.
By regulating the balance of the central neurotransmitter system, it elevates the effective concentrations and transmission efficiency of dopamine and norepinephrine, and simultaneously enhances the signal transduction capacity of nerve cells. This improves the brain's functions of attention regulation, impulse inhibition and behavioral management at a physiological level, laying a core foundational role for alleviating ADHD symptoms.
Clinical Value in Adjuvant Treatment
In the adjuvant treatment of ADHD, it primarily exerts ameliorative effects on the three core symptoms: inattention, hyperactivity and impulsivity, and is suitable for ADHD patients of all age groups including children, adolescents and adults. In clinical application, it can serve as an adjunct to conventional therapy and be used in conjunction with standardized intervention regimens. It helps patients extend attention span, improve distractibility, reduce purposeless hyperactive behaviors and impulsive decision-making, and enhance their behavioral self-control as well as learning and work efficiency.
In addition, this preparation adopts a nasal administration route with the advantages of convenient operation and rapid onset of action. It has no obvious hormonal activity and good tolerability, making it suitable for long-term adjuvant use and effectively improving patients' treatment compliance. It provides a safe and convenient adjuvant option for the comprehensive management of ADHD, and is particularly applicable to patient groups with refined demands for symptom improvement.
Semax Spray, as a heptapeptide neuromodulator, its stability is directly related to the efficacy and safety of the drug. The following is a detailed analysis from five aspects: chemical stability, physical stability, storage conditions, usage stability, and stability performance in clinical applications.
Chemical Stability
The chemical structure of Semax is a heptapeppeptide compound (Met-Glu-His-Phe-Pro-Gly Pro), with a molecular weight of 813.92 g/mol. Its chemical stability is significantly affected by temperature, light and pH value:
Temperature sensitivity
Semax is prone to degradation at room temperature and should be stored refrigerated at -20°C. If the storage temperature exceeds 10°C, the drug activity may decrease by more than 30%.
Light degradation
Semax is sensitive to light. After being exposed to strong light for 24 hours, the drug activity may decrease by 50%. Therefore, This spray is usually packaged in dark glass bottles to reduce the influence of light.
pH value influence
Semax has the best stability in aqueous solutions with a pH range of 5.5 to 6.5. If the pH value deviates from this range, the drug may undergo hydrolysis or polymerization reactions, resulting in a decrease in activity.
Physical Stability
The physical stability of this spray is mainly reflected in the clarity of the solution and the content of particulate matter:
Clarity
The Semax solution should be a colorless and transparent liquid. If it becomes cloudy or precipitates, it may indicate drug degradation or microbial contamination.
Particulate matter content
According to the International Pharmacopoeia standard, the particulate matter content in Semax solution should be less than 100 per milliliter (diameter ≥10μm). Excessive particulate matter may affect the nasal absorption efficiency of drugs and even cause local irritation.
Viscosity variation
The viscosity of Semax solution should be maintained within the range of 1 to 5 mPa·s. Excessively high viscosity may lead to uneven spraying, while too low viscosity may affect the retention time of the drug in the nasal mucosa.
The Influence of Storage Conditions on Stability
The storage conditions of this product need to be strictly controlled to ensure the long-term stability of the drug：
Temperature
It is recommended to store at a temperature of 2-8°C. If the storage temperature is too high, the activity of the drug may decrease. If the temperature is too low (such as freezing), the medicine may crystallize, causing the sprayer to clog.
Humidity
This spray should be stored in a dry environment. Excessive humidity can cause the packaging materials to become damp, affecting the stability of the medicine.
Lighting
It should be stored away from light. It is recommended to use opaque packaging materials. Light exposure may cause the photolysis reaction of Semax, generating inactive degradation products.
Stability after opening
It is recommended to use up within 30 days after opening the bottle. After opening, the medicine may come into contact with oxygen and moisture in the air, resulting in a decrease in activity.
Stability during Use
Its stability during the usage process is affected by multiple factors:
The performance of the sprayer
The design of the sprayer must ensure that the drug can be sprayed evenly and the particle size is moderate (5-10μm in diameter). If the performance of the sprayer is poor, it may lead to uneven distribution of the drug in the nasal mucosa, affecting the therapeutic effect.
Nasal cavity environment
The pH value and temperature of the nasal cavity may affect the absorption efficiency of Semax. It is recommended to clean the nasal cavity before taking the medicine to reduce local irritation and drug degradation.
Administration frequency
The administration frequency of this spray needs to be adjusted according to the clinical indications. Excessive use may irritate the nasal mucosa and even cause bleeding. Insufficient use may affect the therapeutic effect.
Stability performance in Clinical Application
Short-term stability: Under storage conditions of 2-8℃, its activity can be maintained for more than 24 months. The drug activity shall not decrease by more than 5% within 30 days after opening.
Long-term stability: Long-term storage tests show that the spray can be stored for more than 36 months under freezing conditions at -20°C, with a decrease in activity of no more than 10%.
Transportation stability: It should avoid severe vibration and high temperature during transportation. The simulation transportation test shows that when the drug is transported at 25°C for 7 days, its activity decreases by no more than 3%.
Clinical efficacy stability: Multiple clinical studies have shown that there is no significant difference in the therapeutic effect of this spray when used under different storage conditions. For example, in patients with cerebral ischemia, it can significantly improve the neurological function score, and the therapeutic effect is independent of the storage conditions.
Measures to Enhance Stability
Optimize packaging materials
Use opaque dark glass bottles and moisture-proof packaging to reduce the impact of light and humidity on the medicine.
01
Adding stabilizers
Add antioxidants (such as vitamin C) and pH regulators (such as phosphate buffer solution) to the drug solution to enhance the chemical stability of the drug.
02
Improve the design of the sprayer
Adopt a new type of sprayer to ensure that the drug can be sprayed evenly and reduce the generation of particulate matter.
03
Strengthen storage management
Establish strict storage and transportation management systems to ensure that drugs are stored and transported under appropriate conditions.
04
High Performance Liquid Chromatography (HPLC)
HPLC is the most core analytical method for Semax Spray, mainly used for the content determination and qualitative identification of the primary component Semax, and is suitable for the polar and biological activity characteristics of peptides. The detection employs a reversed-phase HPLC column, with water-acetonitrile/methanol as the mobile phase supplemented with ion-pair reagents such as trifluoroacetic acid, and a gradient elution program is adjusted. The target peak is detected by an ultraviolet detector (214 nm or 280 nm).
For qualitative analysis, specific identification is achieved by comparing the retention time of the sample with that of the Semax reference standard. For quantitative analysis, the external standard method is used to plot a standard curve for calculating the accurate content of Semax in the spray. Meanwhile, the uniformity of the spray volume per actuation and the total spray volume per vial is controlled to meet the dosage requirements of nasal preparations. This method features high precision and good recovery, and its limit of detection and limit of quantitation can meet the testing requirements for trace peptides.
High Performance Liquid Chromatography-Mass Spectrometry (HPLC-MS)
HPLC-MS is used for purity analysis and impurity identification of it, making up for the limitations of single HPLC. HPLC is used to achieve effective separation of impurities from the primary component, and combined with the high sensitivity and specific qualitative capability of mass spectrometry, it accurately detects process impurities (e.g., peptide synthesis intermediates, truncated peptides), degradation impurities (e.g., oxidized peptides, hydrolyzed peptides) and trace excipient impurities in the preparation.
At the same time, the purity is calculated by the peak area normalization method of the primary component, and the limits of total impurities and individual impurities are strictly controlled. This method enables qualitative and semi-quantitative analysis of impurities, provides key data for the quality control and stability study of it, and ensures the safety and effectiveness of the preparation.
FAQ
How to store it?
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It is also important to properly store your Semax. Store it in a cool, dry place and protect it from direct sunlight.
How many sprays of Semax per day?
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Sources and dosing: In healthy individuals, 1-2 drops of the 0.1% solution are used two times per day. For stroke, 2-4 drops of the 1% solution are used 3-4 times per day.
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