Ethinylestradiol + Lynestrenol
Estradiol is the major oestrogen in pre-menopausal women. Ethinylestradiol has similar actions as oestradiol. It is responsible for the development and maintenance of female reproductive system and secondary sexual characteristics. It also inhibits anterior pituitary by negative feedback effect and causes capillary dilation, fluid retention and protein anabolism.
Lynestrenol is a progestogen structurally related to norethisterone. It may be used alone or as the progestogenic component of some oral contraceptives.
Dosage & Administration
Pill is to be taken daily.
Women should be instructed to take the pills at about the same time every day, preferably after the evening meal or at bedtime.
Each subsequent pack is started on the day after the current pack is completed.Continue taking one pill each day.lt is most likely that your menstruation will start while taking the brown pills. Do not discontinue taking the brown pills.
In addition to giving you iron supplementation regular taking of the brown tablets for 7 days will help you keep your pill taking routine.When pt wish period to begin, just stop tablet taking.
While using the second pack woman may have some breakthrough bleeding or spotting. Start with your next pack after the usual 7 day red inactive pill interval.
The advice concerning Management of Missed Pills is applicable. The woman must take the extra active pill(s) needed from a back up pack after vomiting.
CYP1A2 and CYP3A4 inducers such as aminoglutethimide, carbamazepine, phenobarbital, and rifampin may decrease the effects of estradiol. May enhance the effects of hydrocortisone and prednisolone when used together. Altered anticoagulant effect when used with dicoumarol.
Potentially Fatal: Antibiotics (ampicillin, tetracycline, sulphonamides and chloramphenicol) can cause intermenstrual bleeding or failure of contraception. Reduced efficacy of antihypertensives or hypoglycaemic drugs. Increased metabolism and subsequent reduction in efficacy with enzyme-inducing agents e.g. carbamazepine, griseofulvin, phenobarbital, phenytoin and rifampicin. Adjustment in antidiabetic dose may be required. May increase plasma levels and toxicity of ciclosporin.