For those who take Ortho-tricyclen Lo?
Answers:
Libido can be effect by ANY BC pill, because of the hormone level. If this become a problem for you, consider varying the pill you're on.
If you do want to loose change, consider shifting to a pill (such as LoEstrin or YAZ) which have lone one type of hormone adjectives month long (mono-phasic pills) versus the tri-phasics that constantly rework the level of hormones within your body.
As for reduced efficacy, to be exact a myth. The efficacy rating of pills is effect by usage method, not longevity. In other words, you must thieve your pills EXACTLY as you're supposed to to prevent pregnancy, regardless of how several years you use them.