Smoking-related symptomatology in pregnant smokers during ad libitum smoking and following overnight smoking abstinence.

BMC Res Notes · 2019 · PMC6669967 · PMID 31370907

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Further studies [ 12 , 33 ] giving oral exogenous progesterone and IV nicotine showed a trend of decreased smoking behavior, reduced urges to smoke and showed enhanced ratings of “bad effects” from IV nicotine, and attenuated the rating of “drug liking”.

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