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Doctor insights on: Can Antibiotics Cause Your Period To Be Late

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If you are on birth control pills can the antibiotic biaxin (clarithromycin) cause your period to be late? Or missed?

If you are on birth control pills can the antibiotic biaxin (clarithromycin) cause your period to be late? Or missed?

Usually not: BUT, antibiotics in general can minimally decease the effectiveness of birth control, so be sure to use condoms as well when having sex on antibiotics. If your period does not come, be sure to check a pregnancy test, and see your GYN. Best wishes. ...Read more

Dr. John Leander Po
1,117 doctors shared insights

Antibiotic (Definition)

An antibiotic is a medicine that slows, stops, or kills germs. The germs are usually bacteria causing an infection in a person, so the person uses antibiotics to help his body get ...Read more


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Hi,I was on germentin for 7days and my period is now 10 days late, could this because of the antibiotic? I started tablets on day period was due .thnk

Hi,I was on germentin for 7days and my period is now 10 days late, could this because of the antibiotic? I started tablets on day period was due .thnk

Late period: Irregular periods are very common. If you normally have regular periods and then suddenly have one that is early or late this usually gets better on its own with cycles returning to normal over the next few months. If you are not wanting to be pregnant you should discuss birth control which will also help with cycle control. ...Read more

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I am currently taking an antibiotic for Lyme disease can this cause me to miss my period?

I am currently taking an antibiotic for Lyme disease can this cause me to miss my period?

Hard to know: There are many reports of women having irregular periods when on antibiotics but it is not proven whether there is a relationship; if you are on antibiotics you have an infection & it is hard to know if the delayed period is due to the antibiotics or the infection! but in either case, your experience is not unusual. I hope you are getting adequate treatment for lyme- see comment:. ...Read more

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Hello, my period is 3 days late. I was sick about a month ago, and I was put on the antibiotic amoxicillin for two weeks. Could that be the reason my ?

Hello, my period is 3 days late. I was sick about a month ago, and I was put on the antibiotic amoxicillin for two weeks. Could that be the reason my ?

Possible: An acute transient illness has the capacity to delay your menstrual period. I doubt the antibiotic Amoxicillin had anything to do with this. It sounds as if you are concerned that you may be pregnant, and if so, there are otc tests available but this is a little early to be sure. ...Read more

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Can the use of amoxicillin and lamactil together cause an adverse reaction? Could the antibiotic cause me to only spot during my period

Can the use of amoxicillin and lamactil together cause an adverse reaction? Could the antibiotic cause me to only spot during my period

Rx pretty safe here: There is no reason why these medications could not be used together. Go ahead, use them with confidence. They should not cause adverse reactions when used together. Amoxicillin should not cause changes in perimenstrual bleeding. ...Read more

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Ive always had irregular menses,my hormones r ok.Last month took antibiotic nd my period is 2weeks late.Not pregnant.Is it alarming? scared of tumors

Ive always had irregular menses,my hormones  r ok.Last month took antibiotic nd my period is 2weeks late.Not pregnant.Is it alarming? scared of tumors

No: I don't see anything here that sounds like cancer. Antibiotics can reduce the effectiveness of the pill and other hormonal contraceptives. If you are not pregnant, and normally have irregular periods, I don't see a reason for concern. ...Read more

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I had sex the day before my last period. I have abstained since.I have cramps but this moths period is late. Am i pregnant? I've been on an antibiotic

I had sex the day before my last period. I have abstained since.I have cramps but this moths period is late. Am i pregnant? I've been on an antibiotic

Probably not - : If that is the only time you had sex it is unlikely you are pregnant based on timing. You need to develop more consistent birth control options including barrier contraception unless you want to get pregnant and if that is the case stop birth control. ...Read more

Dr. Creighton Wright
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Menstrual Period (Definition)

Menstrual period is a medical term for the monthly bleeding ...Read more