What does low dose mean?
Low dose refers to the amount of estrogen in a pill. A birth control pill is considered low dose if it has 0.035 mg or less of estrogen. Years ago, when birth control pills were introduced in the United States, doctors thought the amount of estrogen had to be high in order to prevent pregnancy. Over the years, however, scientists found that lower doses of estrogen were just as effective. The lower amount of estrogen found in today’s birth control pills helps reduce potential side effects.