This article needs to be updated. The reason given is: no files for 2006 are listed at the cited source, but files for 2013 are there; NLM releases this information annually. Please help update this article to reflect recent events or newly available information. (February 2020)

The following is a partial list of the "G" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM).

This list continues the information at List of MeSH codes (G11). Codes following these are found at List of MeSH codes (G13). For other MeSH codes, see List of MeSH codes.

The source for this content is the set of 2006 MeSH Trees from the NLM.

MeSH  G12 – chemical and pharmacologic phenomena

MeSH  G12.091 – biopharmaceutics

• MeSH  G12.091.690 – pharmacokinetics
• MeSH  G12.091.690.064 – area under curve
• MeSH  G12.091.690.129 – biological availability
• MeSH  G12.091.690.140 – biotransformation
• MeSH  G12.091.690.140.595 – metabolic clearance rate
• MeSH  G12.091.690.140.600 – metabolic detoxication, drug
• MeSH  G12.091.690.140.600.500 – metabolic detoxication, phase i
• MeSH  G12.091.690.140.600.750 – metabolic detoxication, phase ii
• MeSH  G12.091.690.898 – therapeutic equivalency
• MeSH  G12.091.690.949 – tissue distribution

MeSH  G12.200 – cytoprotection

MeSH  G12.254 – depression, chemical

MeSH  G12.297 – dose-response relationship, drug

MeSH  G12.307 – down-regulation

MeSH  G12.350 – drug design

MeSH  G12.361 – drug interactions

• MeSH  G12.361.310 – drug antagonism
• MeSH  G12.361.477 – drug synergism
• MeSH  G12.361.511 – food-drug interactions
• MeSH  G12.361.755 – herb-drug interactions

MeSH  G12.392 – drug resistance

• MeSH  G12.392.269 – drug resistance, microbial
• MeSH  G12.392.269.347 – drug resistance, bacterial
• MeSH  G12.392.269.347.500 – beta-lactam resistance
• MeSH  G12.392.269.347.500.175 – cephalosporin resistance
• MeSH  G12.392.269.347.500.600 – penicillin resistance
• MeSH  G12.392.269.347.500.600.050 – ampicillin resistance
• MeSH  G12.392.269.347.500.600.525 – methicillin resistance
• MeSH  G12.392.269.347.750 – chloramphenicol resistance
• MeSH  G12.392.269.347.812 – drug resistance, multiple, bacterial
• MeSH  G12.392.269.347.875 – kanamycin resistance
• MeSH  G12.392.269.347.937 – tetracycline resistance
• MeSH  G12.392.269.347.968 – trimethoprim resistance
• MeSH  G12.392.269.347.984 – vancomycin resistance
• MeSH  G12.392.269.383 – drug resistance, fungal
• MeSH  G12.392.269.383.500 – drug resistance, multiple, fungal
• MeSH  G12.392.269.420 – drug resistance, viral
• MeSH  G12.392.269.420.500 – drug resistance, multiple, viral
• MeSH  G12.392.300 – drug resistance, multiple
• MeSH  G12.392.300.500 – drug resistance, multiple, bacterial
• MeSH  G12.392.300.625 – drug resistance, multiple, fungal
• MeSH  G12.392.300.750 – drug resistance, multiple, viral
• MeSH  G12.392.395 – drug resistance, neoplasm
• MeSH  G12.392.491 – insecticide resistance
• MeSH  G12.392.617 – insulin resistance

MeSH  G12.454 – drug tolerance

• MeSH  G12.454.910 – tachyphylaxis

MeSH  G12.520 – inhibitory concentration 50

MeSH  G12.561 – kinetics

MeSH  G12.602 – lethal dose 50

MeSH  G12.626 – maximum tolerated dose

MeSH  G12.650 – no-observed-adverse-effect level

MeSH  G12.836 – stimulation, chemical

MeSH  G12.869 – structure-activity relationship

• MeSH  G12.869.500 – quantitative structure-activity relationship

MeSH  G12.955 – up-regulation

The list continues at List of MeSH codes (G13).