I know you're supposed to take Tri-Sprintec at about the same time every day, but my schedule is awfully hectic and it's hard to do that. How much does that decrease it's effectiveness? Also, I'm confused about how many pills to take if you miss two or three. Do you just take them when you remember and use backup?
You are encouraged to take the pills at the same time every day - although there is probably a 1-2 hour window period where effectiveness is not compromised.
If pills are taken every day at the same time, and each pack is started on time, oral contraceptives are 99% effective in preventing pregnancy. On average, oral contraceptives are 93-97% effective because women often miss pills or do not start a new pack on time.
Missing doses of Tri-Sprintec increases the risk of pregnancy.
What you should do if you miss pills depends on how many pills you missed.
If you miss two pills in a row during the first or second weeks of the pack, take two pills on the day you remember and two pills the next day. This should get you back on your regular schedule. You must use a backup method of contraception, such as condoms, for the next 7 days.
If you miss two pills in a row during the third week of the pack (or three or more pills in a row during weeks one through three), your instructions will vary, depending on whether you are a day 1 starter or a Sunday starter. If you are a day 1 starter, throw out the rest of the pack and start a new pack right away. If you are a Sunday starter, take one pill every day until Sunday. On Sunday, throw out the pack and start a new pack (this keeps you on track as a Sunday starter). Either way, you need to use a backup method of contraception, such as condoms, for the next 7 days. You may not have your period as usual this month, since you skipped the pills with no active ingredients.
See your doctor or pharmacist for more information.
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