[Mechanism] Penicillins inhibit the synthesis of bacterial cell walls, causing the production and activation of autolytic enzymes, resulting in bacterial death. In this group of drugs, different varieties target different penicillin binding proteins and enzymes, and these proteins and enzymes are involved in the metabolism of bacterial cell walls. [Indications] bactericidal effect in the bacterial breeding period. Gram-positive cocci: Streptococcus, pneumococcus, sensitive staphylococci; and certain Gram-negative cocci: Neisseria meningitidis, Neisseria gonorrhoeae, have a strong antibacterial effect. Gram-positive bacilli: Diphtheria bacilli; spirochetes: Treponema pallidum, Recurrent Treponema pallidum, Leptospira; Clostridium: Various infections caused by tetanus, gastrobacteria and actinomycetes, such as Suppurative skin diseases, skin bacterial infections, gonorrhea, syphilis, etc. [Contraindications] For those who are allergic to penicillin and have a history of allergies. [Adverse reactions] 1. Allergic reactions; 2. Gastrointestinal discomfort. 【Notes】 1. Probenecid can block the excretion of penicillin drugs, and the combined application can increase the blood concentration. 2. The skin test must be carried out according to the prescribed method before administration. Procaine penicillin is prohibited for those who are allergic to procaine. 3. Procaine penicillin can cause a specific reaction. At the time of injection or 1 to 2 minutes after the injection of the drug, the patient felt uncomfortable, endangered, dizzy, palpitations, auditory hallucinations and other symptoms. Generally no respiratory and circulatory disorders, in most cases, elevated blood pressure. Generally, no special treatment is needed, and the symptoms can be relieved by maintaining the symptoms for 1 to 2 hours. The use of sedatives and antihistamines can help with recovery. 4. Low doses of penicillin do not cause toxic reactions. In high-dose applications, neuro-psychotic symptoms can occur. For patients with hemagglutination defects, large doses of penicillin can disrupt the coagulation mechanism and lead to bleeding. 5. The aqueous solution of penicillin sodium and potassium salts is unstable and should be used now.
    
    
    
        
    
    
    
        
            
                
                
                    
                        
                        
                        
                        
                        
                        
                            
                                
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                                    Amino compound
                                    
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                                    Oxy-containing amino compound
                                    
                                    
                                    Cycloalkylamines, aromatic monoamines, aromatic polyamines and derivatives and salts thereof
                                    
                                    
                                    Acyclic monoamines, polyamines and their derivatives and salts
                                    
                                    
                                    Amide compound
                                    
                                    
                                    Sulfonic acid amino compound
                                    
                                    
                                
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                                    Alcohols, phenols, phenolic compounds and derivatives
                                    
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                                    2-cycloalcohol
                                    
                                    
                                    Halogenated, sulfonated, nitrated or nitrosated derivatives of alcohols
                                    
                                    
                                    Extremely halogenated, sulfonated, nitrated or nitrosated derivatives of phenols
                                    
                                    
                                    Phenol and its halogenated, sulfonated, nitrated or nitrosated derivatives
                                    
                                    
                                    Acyclic alcohol
                                    
                                    
                                
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                                    Nitrogen-containing compound
                                    
                                    
                                
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                                    Nitrile compound
                                    
                                    
                                
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                                    Organic derivative of hydrazine or hydrazine
                                    
                                    
                                
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                                    Terpenoid
                                    
                                    
                                
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                                    Ether compounds and their derivatives
                                    
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                                    Ether, ether alcohol
                                    
                                    
                                    Halogenation, sulfonation, nitration or nitrosation of ethers, ether alcohols, ether phenols
                                    
                                    
                                
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                                    Aldehyde
                                    
                                    
                                
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                                    Carboxylic compounds and derivatives
                                    
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                                    Cyclic carboxylic acid
                                    
                                    
                                    Halogenation, sulfonation, nitration or nitrosation of carboxylic acids
                                    
                                    
                                    Halogenation, sulfonation, nitration or nitration of carboxylic anhydrides
                                    
                                    
                                    Carboxylic acid halide
                                    
                                    
                                    Carboxylic esters and their derivatives
                                    
                                    
                                    Salt of carboxylic acid ester and its derivatives
                                    
                                    
                                    Acyclic carboxylic acid
                                    
                                    
                                
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                                    Hydrocarbon compounds and their derivatives
                                    
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                                    Aromatic hydrocarbon
                                    
                                    
                                    Cyclic hydrocarbon
                                    
                                    
                                    Hydrocarbon sulfonate
                                    
                                    
                                    Hydrocarbon halide
                                    
                                    
                                    Hydrocarbon nitrite
                                    
                                    
                                    Acyclic hydrocarbon
                                    
                                    
                                
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                                    Ketone compound
                                    
                                    
                                
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                                    Alkyl ureas and their derivatives and salts
                                    
                                    
                                
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                                    Inorganic acid ester
                                    
                                    
                                
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                                    Heterocyclic compound
                                    
                                    
                                
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                                    Diazo, azo or azo compound
                                    
                                    
                                
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                                    Organosilicon compound
                                    
                                    
                                
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                                    Organometallic compound
                                    
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                                    Organic palladium
                                    
                                    
                                    Organic germanium, cobalt, strontium, barium, gallium, germanium, germanium, germanium, germanium, etc.
                                    
                                    
                                    Organic calcium
                                    
                                    
                                    Zirconium
                                    
                                    
                                    Organic potassium
                                    
                                    
                                    Organic
                                    
                                    
                                    Organic lithium
                                    
                                    
                                    Organic
                                    
                                    
                                    Organic aluminum
                                    
                                    
                                    Organotin
                                    
                                    
                                    Organic manganese
                                    
                                    
                                    Organic sodium
                                    
                                    
                                    Organic nickel
                                    
                                    
                                    Organic titanium
                                    
                                    
                                    Organic iron
                                    
                                    
                                    Organic copper
                                    
                                    
                                    Organotin
                                    
                                    
                                    Organic zinc
                                    
                                    
                                    Organic
                                    
                                    
                                    Organic
                                    
                                    
                                    Organic germanium, mercury, silver, platinum, etc.
                                    
                                    
                                    Organic germanium, antimony, bismuth, tungsten, antimony, bismuth, lead, vanadium, molybdenum, chromium, antimony, etc.
                                    
                                    
                                
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                                    Organic sulfur compound
                                    
                                    
                                
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                                    Organic phosphine compound
                                    
                                    
                                
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                                    Organometallic salt
                                    
                                    
                                
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                                    Organic fluorine compound
                                    
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                                    Fluorobenzoic acid series
                                    
                                    
                                    Fluorobenzonitrile series
                                    
                                    
                                    Fluorobenzaldehyde series
                                    
                                    
                                    Fluorobenzyl alcohol series
                                    
                                    
                                    Fluoroanisole series
                                    
                                    
                                    Fluoroaniline series
                                    
                                    
                                    Fluorophenylacetic acid series
                                    
                                    
                                    Fluorophenol series
                                    
                                    
                                    Fluorobenzoic acid series
                                    
                                    
                                    Fluoronitrobenzene series
                                    
                                    
                                    Fluoropyridine series
                                    
                                    
                                    Potassium fluoroborate series
                                    
                                    
                                    Fluorobenzyl alcohol series
                                    
                                    
                                    Fluorotoluene series
                                    
                                    
                                    Fluorine red series
                                    
                                    
                                    Fluoroethane series
                                    
                                    
                                    Fluoropropane series