Indication: 1. Acute pharyngitis and acute tonsillitis caused by Streptococcus pyogenes. 2. Sinusitis, otitis media, acute bronchitis, and acute exacerbation of chronic bronchitis caused by sensitive bacteria. 3. Pneumonia caused by Streptococcus pneumoniae, Haemophilus influenzae, and Mycoplasma pneumoniae. 4. Urethritis and cervicitis caused by Chlamydia trachomatis and non-multi-drug resistant Neisseria gonorrhoeae. 5. Skin and soft tissue infections caused by sensitive bacteria.

Indication: Penicillin is suitable for various infections caused by sensitive bacteria, such as abscesses, bacteremia, pneumonia and endocarditis. Among them, penicillin is the first choice for the following infections: 1. Hemolytic streptococcal infections, such as pharyngitis, tonsillitis, scarlet fever, erysipelas, cellulitis and puerperal fever. 2. Pneumococcal infections such as pneumonia, otitis media, meningitis and bacteremia. 3. Non-penicillinase-producing staphylococcal infections. 4. Anthrax. 5. Clostridium infections such as tetanus and gas gangrene. 6. Syphilis (including congenital syphilis). 7. Leptospirosis

Indication: Penicillin is suitable for various infections caused by sensitive bacteria, such as abscesses, bacteremia, pneumonia and endocarditis. Among them, penicillin is the first choice for the following infections: 1. Hemolytic streptococcal infections, such as pharyngitis, tonsillitis, scarlet fever, erysipelas, cellulitis and puerperal fever. 2. Pneumococcal infections such as pneumonia, otitis media, meningitis and bacteremia. 3. Non-penicillinase-producing staphylococcal infections. 4. Anthrax. 5. Clostridium infections such as tetanus and gas gangrene. 6. Syphilis (including congenital syphilis). 7. Leptospirosis

Indication: Penicillin is suitable for various infections caused by sensitive bacteria, such as abscesses, bacteremia, pneumonia and endocarditis. Among them, penicillin is the first choice for the following infections: 1. Hemolytic streptococcal infections, such as pharyngitis, tonsillitis, scarlet fever, erysipelas, cellulitis and puerperal fever. 2. Pneumococcal infections such as pneumonia, otitis media, meningitis and bacteremia. 3. Non-penicillinase-producing staphylococcal infections. 4. Anthrax. 5. Clostridium infections such as tetanus and gas gangrene. 6. Syphilis (including congenital syphilis). 7. Leptospirosis

Indication: 1. Doxycycline is used for infections caused by the following bacteria: Rickettsia (Lasanky spotted fever, typhus fever, typhus, Q fever, Rickettsial pox, splenic fever, etc.), Mycoplasma pneumonia (pleuropneumonia-like bacteria, EatonAgent), psittacosis and ornithosis, lymphogranuloma venereum and granuloma inguinale, relapsing fever spirochetes (Borrelia burgdorferi). 2. The following Gram-positive bacteria: (1) Haemophilus ducreyi (chancroid), Pasteurella pestis and Pasteurella tularensis, rod-shaped Bartonella, Bacteroides, Vibrio comma and Vibrio embryonius, Brucella (used in combination with streptomycin). Since most of the following bacteria are resistant to tetracycline, sensitivity testing is recommended. If the bacterial sensitivity test shows a certain degree of sensitivity to the drug, doxycycline can be used for infections caused by the following Gram-negative bacteria: (2) Escherichia coli, Enterobacter aerogenes, Shigella, Mima and Hercetella, Haemophilus influenzae (respiratory tract infections), Klebsiella (respiratory and urinary tract infections). 3. Infections caused by the following Gram-positive bacteria: (1) Streptococci: 44% of Streptococcus pyogenes and 74% of Streptococcus faecalis are resistant to tetracyclines. Therefore, tetracyclines are not suitable for infections caused by streptococci unless they are highly sensitive. Penicillin is the first choice for the prevention of upper respiratory tract infections and rheumatic fever caused by type A β-hemolytic streptococci. (2) Pneumococcus, Staphylococcus aureus: respiratory tract, skin and soft tissue infections. Tetracyclines are not the first choice for staphylococcal infections. 4. When penicillin is contraindicated, doxycycline can be used as an alternative drug for infections caused by the following bacteria: (1) Neisseria gonorrhoeae and Neisseria meningitidis, Treponema pallidum and Treponema pygiene (syphilis and yaws), Listeria monocytogenes. (2) Clostridium, Bacillus anthracis, Fusobacterium fusoni, Actinomyces. 5. Doxycycline can be used as an adjunctive drug for acute intestinal amebiasis. 6. Doxycycline is still used to treat trachoma even though the infectious agent has not been eliminated as confirmed by fluorescent immunoassay.

Indication: It is suitable for mycoplasma pneumonia, neonatal conjunctivitis caused by Chlamydia trachomatis, infant pneumonia, genital urinary tract infection (including non-gonococcal urethritis), Legionnaires' disease, diphtheria (adjuvant treatment) and diphtheria carriers, skin and soft tissue infections, whooping cough, respiratory tract infections (including pneumonia) caused by sensitive bacteria (Bacillus influenzae, pneumococcus, hemolytic streptococcus, Staphylococcus, etc.), streptococcal pharyngitis, Listeria infection, long-term prevention of rheumatic fever and prevention of endocarditis, Campylobacter jejuni enteritis, as well as gonorrhea, syphilis, acne, etc.

Indication: It is suitable for mycoplasma pneumonia, neonatal conjunctivitis caused by Chlamydia trachomatis, infant pneumonia, genital urinary tract infection (including non-gonococcal urethritis), Legionnaires' disease, diphtheria (adjuvant treatment) and diphtheria carriers, skin and soft tissue infections, whooping cough, respiratory tract infections (including pneumonia) caused by sensitive bacteria (Bacillus influenzae, pneumococcus, hemolytic streptococcus, Staphylococcus, etc.), streptococcal pharyngitis, Listeria infection, long-term prevention of rheumatic fever and prevention of endocarditis, Campylobacter jejuni enteritis, as well as gonorrhea, syphilis, acne, etc.

Indication: It is suitable for mycoplasma pneumonia, neonatal conjunctivitis caused by Chlamydia trachomatis, infant pneumonia, genital urinary tract infection (including non-gonococcal urethritis), Legionnaires' disease, diphtheria (adjuvant treatment) and diphtheria carriers, skin and soft tissue infections, whooping cough, respiratory tract infections (including pneumonia) caused by sensitive bacteria (Bacillus influenzae, pneumococcus, hemolytic streptococcus, Staphylococcus, etc.), streptococcal pharyngitis, Listeria infection, long-term prevention of rheumatic fever and prevention of endocarditis, Campylobacter jejuni enteritis, as well as gonorrhea, syphilis, acne, etc.

Indication: Due to the low blood concentration of this product, its application is limited to mild and moderate infections caused by pathogens that are highly sensitive to penicillin, such as tonsillitis, scarlet fever, erysipelas, pneumonia caused by group A streptococci, furuncles, carbuncles caused by penicillin-sensitive Staphylococcus aureus, and angina. This product can also be used to treat leptospirosis, relapsing fever and early syphilis.

Indication: Due to the low blood concentration of this product, its application is limited to mild and moderate infections caused by pathogens that are highly sensitive to penicillin, such as tonsillitis, scarlet fever, erysipelas, pneumonia caused by group A streptococci, furuncles, carbuncles caused by penicillin-sensitive Staphylococcus aureus, and angina. This product can also be used to treat leptospirosis, relapsing fever and early syphilis.