Question 1

will cephalexin affect my sprintec birth control? if so when will it be effective again

Accepted Answer

No, very unlikely: Check out http://goaskalice.columbia.edu/antibiotics-and-birth-control-pill &amp; http://www.mayoclinic.org/healthy-lifestyle/birth-control/in-depth/birth-control-pill/art-20045136?pg=2. Recent studies show that most antibiotics, aside from rifampin, will not affect effectiveness of birth control pills. Just remember to finish your antibiotics - don't save for next infection. And make him wrap it up.

Question 2

finished cephalexin on the 1st day of my 4th week on my current birth control cycle, i start a new pack next week, when will bc be effective again?

Accepted Answer

Antibiotic Quest: Rifampin is the only antibiotic proven to affect OCPs (oral contraceptives). Rifampin may also decrease effectiveness of transdermal and vaginal ring preparations. In spite of anecdotal reports of OCP failure, other antibiotics have not been proven to affect the pharmacokinetics of OCPs. Therefore, your OCPs should be effective currently.

Question 3

does cephalexin affect sprintec birth control pills?

Accepted Answer

No: There is no direct negative interaction.

Question 4

does the antibiotic cephalexin make birth control pills less effective?

Accepted Answer

No: The current thinking is that except for rifampin, other commonly-used antibiotics (such as cephalexin and many others) do not alter the effectiveness of birth control pills. This is likely presuming a person is not sick with vomiting or rapid diarrhea, or some other condition that decreases the absorption of a swallowed pill. One can look up:  http://www.ncbi.nlm.nih.gov/pubmed/12063491

Question 5

on cephalexin because of infection. will this lessen the effectiveness of my birth control? had unprotected sex. should i be worried?

Accepted Answer

Should be ok: The current thinking is that except for rifampin, other commonly-used antibiotics do not alter the effectiveness of birth control pills. This is also presuming a person is not sick with vomiting or diarrhea, or some other condition that decreases the absorption of a swallowed birth control pill. One can look up:  http://www.ncbi.nlm.nih.gov/pubmed/12063491

Question 6

i take 250mg of cephalexin daily as a suppressant for chronic utis. will this dosage of antibiotics reduce the effectiveness of my birth control?

Accepted Answer

Probably not: Interference of antibiotics with hormonal contraception is very rare, almost an urban myth. People worry about it a lot more than necessary. But to be 100% safe, ask the doctor who prescribed the antibiotic or your birth control (or both).

Question 7

does cephalexin antibiotic interfere with birth control (kurvelo)? my pharmacist said no, but im going to ask my doctor. should i be concerned?

Accepted Answer

: The whole idea of antibiotics interfering with hormonal birth control is mostly an urban myth. It is extraordinarily rare, if it occurs at all -- despite all the misinformation available online. Believe the pharmacist and don't worry about it.

Question 8

i think i have a sinus infection, will cephalexin  antibiotics make my birth control less effective?

Accepted Answer

Possible: Antibiotics can make them less effective. And, Cephalexin is not a good choice to treat a sinus infection.

Question 9

i had intercourse without a condom during ovulation did the cephalexin cancel out my birth control pills?

Accepted Answer

No: This is a common myth.  Antibiotics, except for one called rifampin, do not affect the efficacy of the birth control pill.

Question 10

i am taking gianvi(birth control generic for yaz). will cipro, (ciprofloxacin) cephalexin, or a zpack effect my birth control?

Accepted Answer

BCP interaction: Hi, Yes, most Antibiotics could decrease the efficacy of birth control pill, therefore while on Antibiotics better use other measures like condom.

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Doctor answers about:

Cephalex and birth control effectives

A member asked:

Will cephalexin affect my sprintec birth control? if so when will it be effective again

A member asked:

Finished cephalexin on the 1st day of my 4th week on my current birth control cycle, i start a new pack next week, when will bc be effective again?

A member asked:

Does cephalexin affect sprintec birth control pills?

A member asked:

Does the antibiotic cephalexin make birth control pills less effective?

A member asked:

On cephalexin because of infection. will this lessen the effectiveness of my birth control? had unprotected sex. should i be worried?

A member asked:

I take 250mg of cephalexin daily as a suppressant for chronic utis. will this dosage of antibiotics reduce the effectiveness of my birth control?

A member asked:

Does cephalexin antibiotic interfere with birth control (kurvelo)? my pharmacist said no, but im going to ask my doctor. should i be concerned?

A member asked:

I think i have a sinus infection, will cephalexin antibiotics make my birth control less effective?

A member asked:

I had intercourse without a condom during ovulation did the cephalexin cancel out my birth control pills?

A member asked:

I am taking gianvi(birth control generic for yaz). will cipro, (ciprofloxacin) cephalexin, or a zpack effect my birth control?

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