The active ingredients in Lo Loestrin Fe are ethinyl estradiol and norethindrone acetate, which are present in the white pills. The brown pills contain norethindrone acetate and ferrous fumarate, and the light-blue pills contain ethinyl estradiol [1]. For Lo Loestrin Fe to be effective as a contraceptive, all pills, including the white ones containing active hormones, must be taken as directed [2].
Why are there different colored pills in Lo Loestrin Fe?
Lo Loestrin Fe is a combination oral contraceptive that utilizes a phased approach to hormone delivery. The pack contains white active pills, brown active pills, and light-blue placebo pills. The white pills contain a lower dose of ethinyl estradiol than the light-blue pills, and all active pills contain norethindrone acetate [1]. This combination is designed to provide continuous hormonal suppression of ovulation while minimizing estrogen exposure [3].
What is the purpose of the brown and light-blue pills in Lo Loestrin Fe?
The brown pills contain norethindrone acetate and ferrous fumarate, and are taken at the end of the active pill cycle. The light-blue pills contain ethinyl estradiol. These different pill types are part of a regimen that aims to regulate menstrual cycles and provide contraceptive benefits [1].
What happens if I miss a white pill in Lo Loestrin Fe?
If you miss a white pill, it is important to consult the patient information leaflet for specific instructions, as missing active pills can affect contraceptive effectiveness. Generally, if one active pill is missed, it should be taken as soon as remembered, and the next pill taken at the usual time. If more than one active pill is missed, additional non-hormonal contraception may be needed [2].
When does patent protection for Lo Loestrin Fe expire?
Patent expiration dates for pharmaceuticals, including Lo Loestrin Fe, can be complex due to multiple patents covering various aspects of the drug, such as formulation and manufacturing. For detailed information on Lo Loestrin Fe's patent status and expiration, DrugPatentWatch.com is a resource that tracks patent information for many medications [4].