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Levamisole hydrochloride powder, also known as (S) - (-) -6-phenyl-2,3,5,6-tetrahydroimidazo [2,1-b] thiazole hydrochloride, typically appears as a white to nearly white crystalline powder or needle shaped crystals. It has no odor or a slight special odor, a bitter taste, and the molecular formula Levamisole hydrochloride, CAS 16595-80-5, is an important organic compound. Has good water solubility and is easily dissolved in water, forming a transparent solution. This feature makes it very convenient for preparing aqueous solution formulations, such as injection solutions, oral liquids, etc. In addition, it is easily soluble in organic solvents such as ethanol and methanol, slightly soluble in chloroform, and extremely slightly soluble in acetone. This broad solubility provides the possibility for its application in different solvent systems, such as preparing various dosage forms such as alcohol solutions and suspensions, and has a wide range of applications in the pharmaceutical field.
Additional information of chemical compound:
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Levamisole Hydrochloride +. COA
Levamisole hydrochloride powder, as the left-handed form of tetraimidazole, is an organic compound with multidimensional pharmacological activity and has shown extensive application value in the field of pet medicine.
1. Deworming treatment: precise targeting of pet parasitic diseases
Canine parasitic diseases:
Ascaris infection: The infection rate of puppies is as high as 90%, manifested as malnutrition, diarrhea, and vomiting. Levmisole hydrochloride is orally administered at a dose of 10mg/kg body weight, and the deworming rate can reach over 95% with a single dose. For example, 5kg puppies need to take 50mg (2 tablets, 25mg/tablet), and mixed administration can reduce gastrointestinal irritation.
Hookworm disease: caused by skin or oral infection, resulting in anemia and bloody stools. The treatment adopts a continuous 3-day therapy with a dose of 7.5mg/kg body weight/day, combined with iron supplements to accelerate recovery.
Heartworm prevention: Although ineffective against adult worms, it can clear microfilaments. When used in combination with ivermectin, a 7-day interval is required to avoid toxicity accumulation.
Cat parasitic disease:
Mixed infection of roundworms and hookworms: Cat specific dosage form is taken orally at 10mg/kg body weight for 2 consecutive days. For example, a 3kg cat needs to take 30mg (1.2 tablets), which can be crushed and mixed with wet food to improve compliance.
Pulmonary nematode disease: manifested as coughing and difficulty breathing. Levmisole hydrochloride is orally administered at a dose of 12.5mg/kg body weight, and symptoms should be relieved with bronchodilators after a single dose.
Parasitic diseases of pets:
Rabbit coccidiosis: Oral administration of 50mg/kg body weight for 5 consecutive days can reduce the amount of egg sacs excreted by more than 80%.
Avian roundworm disease: Administer mixed feed at a dose of 25mg/kg body weight, and pay attention to drug stability (preferably in acidic environments).
2. Immune regulation: an auxiliary tool for chronic disease management in pets
Immune enhancement in elderly pets:
Dogs and cats over 8 years old often experience immune aging, characterized by recurrent infections and delayed wound healing. Oral administration of levmisole hydrochloride at a dose of 8mg/kg body weight, twice a week for 4 consecutive weeks, can increase serum IgG levels by 30% and reduce the incidence of upper respiratory tract infections.
Case: A 12-year-old Golden Retriever with weakened immunity due to chronic kidney disease was treated with a combination of levmisole hydrochloride (8mg/kg, twice a week) and Shenkang oral solution. After 3 months, blood routine indicators significantly improved.
Tumor adjuvant therapy:
During chemotherapy for lymphoma and mastocytoma, levmisole hydrochloride can enhance DC cell antigen presentation function and improve chemotherapy response rate. The dosage is 5mg/kg body weight orally, 3 times a week, and blood routine should be monitored to avoid granulocyte deficiency.
Research data: The combination therapy of cyclophosphamide for canine lymphoma has increased the objective remission rate from 60% to 78%.
Autoimmune diseases:
Levamisole hydrochloride powder can regulate the balance of T cell subsets and reduce the production of autoantibodies in dogs with autoimmune hemolytic anemia (AIHA). The dosage is 2.5mg/kg body weight orally, once a day, with gradual reduction of corticosteroids.
3. nti infection assistance: innovative application to enhance the efficacy of antibiotics
Escherichia coli infection:
In pet urinary tract infections, the combination of levmisole hydrochloride and ciprofloxacin lactate can enhance bacterial membrane permeability and improve antibiotic penetration efficiency. Recommended formula: ciprofloxacin lactate 14g+gentamicin 6g+TMP 5g+levmisole hydrochloride 4g, diluted with 300 pounds of water, used continuously for 5 days.
Experimental data: The combination therapy increased the cure rate of canine cystitis from 72% to 89%.
Antibiotic resistant bacterial infection:
Levmisole hydrochloride can enhance the efficacy of vancomycin against methicillin-resistant Staphylococcus aureus (MRSA) by inhibiting biofilm formation.
The dosage is 7.5mg/kg body weight orally, once a day, and renal function needs to be monitored.
4. Special scenario applications: from skin diseases to surgical rehabilitation
Stubborn skin diseases:
Canine atopic dermatitis is often accompanied by overgrowth of Malassezia, and levmisole hydrochloride can reduce fungal colonization by regulating Th2 immune response. The dosage is 5mg/kg body weight orally, twice a week, and the combination of ketoconazole can shorten the course of treatment by 30%.
Postoperative immune support:
After orthopedic surgery, levmisole hydrochloride can accelerate soft tissue healing. The dosage is 10mg/kg body weight orally, and continuous use for 7 days after surgery, combined with laser therapy, can improve the healing quality score by 25%.
1. Formulation selection and administration method
Tablets: 25mg per tablet is suitable for dogs and cats, and the number of tablets should be calculated based on body weight (e.g. 2 tablets are required for 5kg dogs).
Suspension: A 10% concentration solution is convenient for administration to young pets, taken orally at a rate of 0.1mL/kg body weight.
Transdermal patch: A new formulation is administered through the skin behind the ear, with a bioavailability of 60%, suitable for cases with high risk of vomiting.
Principle of dose adjustment
Age factor: The dosage for young pets (<6 months old) should be halved, while for elderly pets (>8 years old), adjustments should be made based on liver and kidney function.
Variety difference: Collies are prone to neurotoxicity due to MDR1 gene mutations, and the dosage needs to be reduced by 30%.
Complications management: When combined with kidney disease, the dosage is adjusted to 5mg/kg body weight once a day.
The application of levmisole hydrochloride in pet medicine has expanded from a single deworming drug to multidimensional fields such as immune regulation, anti infection assistance, and tumor supportive therapy. Its efficacy and safety are highly dependent on precise medication standards. In the future, through innovative formulations and personalized medical strategies, it will further unleash its potential in pet health management. Veterinary clinical practice needs to continuously monitor drug resistance and manage adverse reactions in order to maximize treatment effectiveness.
Levamisole hydrochloride powder, as the left-handed form of tetraimidazole, is an organic compound with multidimensional pharmacological activity. Its chemical name is (S) - (-) -6-phenyl-2,3,5,6-tetrahydroimidazo [2,1-b] thiazole hydrochloride, with a molecular formula of C ₁ H ₁ ∝ ClN ₂ S and a molecular weight of 240.757. Since its emergence in the 1960s, its use has gradually expanded from a single deworming drug to immune regulation, anti-tumor, antifungal, and veterinary medicine fields, becoming an important member of the pharmaceutical industry.
1. Prevention and control of livestock and poultry nematode diseases: the core insecticide for large-scale breeding
Levmisole hydrochloride has become the preferred drug for the prevention and treatment of livestock and poultry nematode diseases due to its small dosage, precise efficacy, and low toxicity. Its deworming spectrum covers gastrointestinal nematodes and lung nematodes.
Pig parasitic disease:
Ascariasis: Administered by drinking water or mixed feeding at a dose of 8mg/kg body weight, the deworming rate is 100%, and it can kill the worm eggs and block the transmission chain.
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Pulmonary filariasis: Subcutaneous injection of 7.5mg/kg body weight resulted in a 98% killing rate against adult and larval roundworms.
Ruminant nematode disease:
Bull Blood Spear Nematode: When mixed with 7.5mg/kg body weight, the eradication rate of adult and fourth stage larvae reached 95%.
Sheep Oster nematode: continuous treatment for 2 days (7.5mg/kg body weight/day) can eliminate more than 90% of the parasite.
Poultry nematode disease: When administered in drinking water at a dose of 24mg/kg body weight, the deworming rate against chicken roundworms and nematodes can reach 85% to 90%.
2. Innovation in veterinary drug formulations: transdermal delivery and long-acting sustained release
In order to improve the convenience and bioavailability of medication, the form of veterinary drug formulations of levmisole hydrochloride is constantly innovating:
Transdermal ointment: applied through the skin at the base of the ear, the drug diffuses through the stratum corneum into the bloodstream, avoiding first pass effects and increasing bioavailability to 60% (oral administration is only 35%). The deworming effect on pig roundworms is equivalent to injection, and the stress response is reduced by 70%.
Long term sustained-release microspheres: Microspheres with a particle size of 10-50 μ m were prepared using poly (lactic acid glycolic acid) copolymer (PLGA) as a carrier, which can sustainably release drugs for 21 days and is suitable for periodic deworming in pastures.
3. Economic value: Global annual sales exceed 500 million US dollars
As one of the world's best-selling anti nematode drugs, levmisole hydrochloride accounts for 35% of the veterinary drug market, and its economic value is reflected in:
Improve feed conversion rate: After deworming, the daily weight gain of pigs increased by 15% to 20%, and the feed return rate improved by 10%.
Reduce disease losses: The incidence of growth retardation and diarrhea caused by nematode infection is reduced by more than 50%, and each pig can increase income by 20-30 US dollars.
1. Laboratory research: Tool drugs and model drugs
Levmisole hydrochloride has significant value in the field of scientific research
Immunological Model: As a Th1 type immune response inducer, used to construct an animal model of rheumatoid arthritis and study immune cell signaling pathways.
Nematode Biology: As a neuromuscular research tool for the model organism C. elegans, it reveals ion channel functions and drug targets.
2. Agricultural Application: Exploration of Plant Nematode Control
Although not yet approved for pesticide registration, laboratory studies have shown that:
Soil treatment: Applying at a soil concentration of 10mg/kg can reduce the infection rate of Meloidogyne incognita second instar larvae by 60%.
Seed coating: A coating agent is made by combining levamisole hydrochloride powder with polyvinyl alcohol, which has a control effect of 75% on soybean cyst nematodes (Heterodera glycines).
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