last time was 4 months in between, before that it was like 1 month in between, before that it was like 2 weeks in between before that it was like,1 week in between that was bad, then 3 weeks,before that one month, before that it was like 3 months, before that 1 month, before that 4 months, before that i dunno 1 or 2 months.I can't really remember exactly if thats the way it was but it was always one pill,with like 2 or 3 times being 2 pills.I started new years 06, so it's been a year and 7 months i've tried it, and their was def a period with 4 months in between, and another period with 3 and a half months or 4 months in between.