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A 21-year-old member asked:

Does sulfameth interfere with birth control? back up protection failed so i don't know if i should take plan b or would that be effective?

1 doctor answer • 5 doctors weighed in

Dr. Nela Corderoanswered

Pediatrics 55 years experience

FERTILITY CONTROL: Sulfa rx does not interfere with bcp.Plan b or Provera (medroxyprogesterone) rx to bring down menstruation is safer if pregnancy test is negative under the guidance of your gyne.

5.8k viewsReviewed >2 years ago

Dr. Luis Villaplana

Dr. Vasu Brown

Dr. Douglas Fronzaglia ii, do, ms

Dr. Luis Villaplana and 3 doctors agree4 doctors agree

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Last updated Jun 30, 2014

Found in:

Female health›Plan b

People also asked

Im on the mini pill and I take it perfect everyday(even have an alarm). Is this effective birth control that we dont need to use a back up or plan b?

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I was on amoxicillin and take the birth control called Apri. I had an incident where the protection broke so I took a plan b. Today Im noticing light orange discharge and pain when urinating. Is it possible to be pregnant or am I imaging things?

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I'm on birth control I also take doxycycline which makes it less effective so I used a codom and it broke so I took plan b can I still get pregnant?

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Took plan b after missing 1 birth control pill. Do I continue to take the rest of my pack as I normally do and would a back up method be needed?

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