Does it mean 99.9% effective the first time, and lower percentage as time progresses or is it 99.9% effective EVERY time. And if its the latter, would changing birthcontrols fix it?
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99.9% Question...
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It means that, in the course of a year, if you take your birth control pill perfectly, you have a 0.1% chance of becoming pregnant. It's an average. There are variations.
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is it the same for the second and third year? Like you dont build up a tolerance or something
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It's 99.9% each year. It's possible that over time the "strength" or brand of pill prescribed might need adjustment, but as far as I know, you don't build up a tolerance to the synthetic hormones.
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Well there isnt so much a difference in strength of birth control. brand yes, but not strength. All that difers is the way it goes about adjusting your cycle. You cant really build a tolerance to birth control. its not like a pain killer
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By "strength", I meant level of hormone. Do all birth control pills have exactly the same levels of hormones? Does Ortho Tri-Cyclen contain the same amount of hormone as Ortho Tri-Cyclen lo?
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Hmm well i believe its not so much as a different amount but the type of hormone they use in them. For example some birth controls have a combination of desogestrel and ethinyl estradiol where others like ortho tri cyclen includes norgestimate and ethinyl estradiol. So basically it all differs in the way your body reacts to that specific hormone. So when a doctor is changing you to different brands of brith control, he is testing the different types of hormone. So maybe one type of hormone wasnt doing the job, maybe another one will
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The type, dose, and hormone reatio are all subject to adjustment, with the goal of minimizing side effects, while maintianing anti-pregnancy performance.From Ortho:In reply to:While both ORTHO TRI-CYCLEN LO and ORTHO TRI-CYCLEN deliver low levels of progestin over the course of your cycle, ORTHO TRI-CYCLEN LO delivers a lower amount of estrogen—25 mcg compared to 35 mcg.This low level of estrogen was developed to help minimize the occurrence of nuisance side effects, such as breakthrough bleeding and spotting.* Birth control pills with lower levels of estrogen can be associated with higher rates of these side effects than Pill formulations containing slightly more estrogen.The unique combination of hormones—three levels of progestin and a lower level of estrogen—in ORTHO TRI-CYCLEN LO helps strike the right balance of efficacy and tolerability.
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exactly, but what i was trying to say is that it becomes a little more than just strength because of the different variations of hormones they put together in different brands. More often than anything i see more switching to different brands than switching in the same brand to a different level of that hormone. A major problem with brith controls is the side effects people experience cause by the type of hormone and the amount of that hormone in that specific brand. For example, this lady i work with once starting losing her hair do to her birth control. Others suffer bleeding problems. etc..... Also the way that hormone is released plays a factor. Another way to put it is its half life. it may release more extended in one brand than the other due to the combinations in it. There are just so many brands out there it gets very complicated. Ill put it this way, alot of it is also marketing. When ortho tri-cylcen lost its patent, tri-nessa came out as its generic. So ortho tri-cyclen came out with a variance in dosing. Basically it comes down to a money making sceme.