| Literature DB >> 6809025 |
D J Back, A M Breckenridge, M MacIver, M Orme, P H Rowe, C Staiger, E Thomas, J Tjia.
Abstract
1 Thirteen women taking long term oral contraceptive steroids were studied while taking ampicillin (500 mg three times daily) and compared to a control cycle while not taking ampicillin. 2 There were no significant changes in the plasma concentrations of ethinyloestradiol, levonorgestrel, follicle stimulating hormone or progesterone, although lower concentrations of ethinyloestradiol were noted in two women. 3 We conclude that most patients taking oral contraceptive steroids do not need to take alternative contraceptive precautions while taking ampicillin.Entities:
Keywords: Biology; Contraception; Contraceptive Agents, Estrogen--analysis; Contraceptive Agents, Female--analysis; Contraceptive Agents, Progestin--analysis; Contraceptive Agents--analysis; Control Groups; Endocrine System; Estrogens; Ethinyl Estradiol--analysis; Family Planning; Follicle Stimulating Hormone--analysis; Gonadotropins; Gonadotropins, Pituitary; Hormones; Levonorgestrel--analysis; Norethindrone Acetate; Physiology; Pregnancy, Unplanned; Progestational Hormones; Progesterone--analysis; Reproductive Control Agents; Research Methodology
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Year: 1982 PMID: 6809025 PMCID: PMC1427567 DOI: 10.1111/j.1365-2125.1982.tb04932.x
Source DB: PubMed Journal: Br J Clin Pharmacol ISSN: 0306-5251 Impact factor: 4.335