"my doctor prescribed me lo loestrin when i was 15 to treat my heavy, irregular periods and cramps that would cause me to stay home from school/other obligations for days at a time. it worked perfectly for me for the 5+ years that i used it! my periods lightened and became extremely regular, and it worked as pregnancy prevention later as well. i didn&#039;t experience any abnormal weight gain, and it didn&#039;t affect my acne whatsoever (neither lightened it nor made it heavier). i would definitely recommend llf!"