The reproductive process is a complex physiological process, including the formation and maturation of sperm and eggs, ovulation, fertilization, implantation and embryo development. Blocking any of these steps can achieve the goal of contraception and termination of pregnancy. Male birth control drugs. There are very few such drugs, and only gossypol is relatively mature in China. Gossypol is a yellow phenolic substance extracted from cotton roots, stems and seeds. It can reduce the number of sperm after administration. With the prolonged administration time, the sperm can be reduced to zero. After more than 4 000 healthy men try it, its efficiency is up to More than 99%. Female contraceptives. According to different action links, it can be divided into: (1) contraceptives that inhibit ovulation. This is the most important category of female contraceptives, consisting of different types of estrogen and progesterone in different doses. There are short-acting oral contraceptives, commonly used compound norethisterone tablets, compound megestrol tablets and long-acting injection contraceptives, mainly compound progesterone caproate. The adverse reactions of these drugs are early pregnancy reaction, irregular uterine bleeding, amenorrhea, decreased milk, and hypercoagulability. It should not be used for acute and chronic liver disease, diabetes and women with uterine fibroids. (2) Anti-implantation contraceptives. Such drugs interfere with the normal development and transformation of the endometrium, which is not conducive to the implantation of pregnant eggs. Large doses of norethisterone or megestrol acetate are used in China. The advantage of this class of drugs is that the application is not limited by the menstrual cycle. (3) Contraceptives that mainly affect the function of the uterus and placenta. These drugs are under investigation and have not been used in large quantities. The main drug is prostaglandin.
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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