Doctor insights on:
How Long Will Antibiotics Affect My Birth Control Pills
Antibiotics: Some antibiotics decrease effectivity of birth control pills. This means that you have to use caution and protection for the rest of month that you are on antibiotics. The next month or cycle on birth contol pills should provide adequate coverage as long as you are not on antibiotics. ...Read more
Also known as oral contraceptives, birth control pills are highly effective oral medications that use hormones to prevent pregnancy. There are two main types of birth control pills: one with estrogen and progestin (also known as the combination pill) and one with just progestin. The two main ways they prevent pregnancy are: 1) The hormones thicken the cervical mucous, which keeps sperm from entering the uterus on their way to the egg; and 2) By maintaining a level of hormone in the blood stream that prevents the ...Read more
7 days after: 7 days after you have finished the course of antibiotics. ...Read more
How much do antibiotics really affect birth control pills? After finishing antibiotics how long until back to normal?
Definitely affect: All antibiotics can definitely affect the effectiveness of birth control pills. While on antibiotics, you should definitely use a back up method of birth control if you want to avoid becoming pregnant. The rule of thumb to prevent pregnancy is to use a form of back up birth control (e.g., condoms) until your next menstrual period. ...Read more
There are only a few antibiotics that interfere with birth control pills, and fortunately they are rarely used.
For antibiotics that do have an impact (rifampin, griseofulvin) effect though depends on when the antibiotics are taken in the cycle. The chemical effect is short, but if that short effect results in unintended ovulation, the impact may last the entire cycle. ...Read more
I'm on birth control pills & now I have to take antibiotics twice daily. When I finish the anitbiotics how long should I wait to have bc protected sex?
7 days: 7 days considering that you didn't miss any pills. ...Read more
How long after taking antibiotics does it take for birth control pills to be completely effective again?
Hi, can I be pregnant if I'm taking birth control pills cryselle long time and antibiotic clindamycin 2 days and had unprotected sex? Tnx
Low probability: Of getting pregnant, although any antibiotic can reduce the effectiveness of birth control pills, less though with clindamycin, more with others as tetracycline. However this behooves you to use extra method of contraception if you are using any medicine that interacts with birth control pilks. Good that you asked, always exercise caution with multiple medications, good luck ...Read more
How long does nausea from birth control pills last? On second month, can the anitibiotics for a UTI be making it worse?
Bactrim (sulfamethoxazole and trimethoprim): This medication may actually increase plasma levels of ethinyl estradiol, the medicine found in many contraceptives. ...Read more
Yes: They affect absorption...Reducing absorption so pills are not as effective. ...Read more
Now: Some antibiotics can make birth control pills less effective meaning you should use a back up method like condoms while you are taking the antibiotics. There is no reason to stop or delay the birth control pills. ...Read more
VERY RARELY: In the prescribing info, it is said that taking certain antibiotics may reduce the potency or effectiveness of birth control pills. In my experience, I have never seen this in over 30 years of practice. At your age of 44, conception under any circumstances may be unlikely, though it does occur. ...Read more
Does the antibiotic azithormycin effect my birth control pills? Is this why I am having spotting?
Contraceptiion is a means of preventing conception (or fertilization). There are hormonal and non hormonal methods of preventing sperm and egg from meeting. Talk to your doctor or clinic about what options are best for you. There are short acting methods (condoms, pills, patch, ring) and long ...Read more
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