24 citations
,
July 1980 in “Journal of Toxicology and Environmental Health” This study found that feeding norethindrone acetate to albino rats over two years caused various dose-related health effects, such as growth retardation and liver changes, but did not increase overall tumor incidence.
10 citations
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January 2015 in “Przeglad Menopauzalny” This review discusses the effects and selection criteria of different progestogens in various treatments but reports no direct clinical comparisons of their metabolic effects.
September 2023 in “Biology of reproduction” This study suggests that the testosterone analogs 7α-Methyltestosterone and 7α-Ethyltestosterone may offer promising androgenic, progestogenic, and anabolic properties for development as male contraceptives.
164 citations
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January 2003 in “Drugs” 
January 2020 in “the british journal of cardiology” This case report suggests that the progestogen-only pill may cause false-positive aldosterone/renin ratio results in primary hyperaldosteronism screening, indicating it should be omitted before testing.