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When Will My Birth Control Pill Be Effective?
i just started taking ortho try-cyclen, but two days before i started my pack i had taken one 250mg pill of tetracycline. i stopped taking it right after that because i realized that it might interact with my pill and i knew i'd be starting it soon. i have more been taking ortho tri-cyclen for 12 days. would taking the one tetracycline pill have made my pill ineffective and when will my birth control pill be effective?
Mon, 21 Jul 2014
Hello and welcome,
I understand the concern.
Even though the literature does suggest that a few antibiotics may interfere with the pills most of the time they are antibiotics that affect the liver function like anti tuberculosis drugs etc. A single dose of tetracyclin will not cause any effect. Also most liklely it was out of the system before you even started the pill.
The pill will be most likely effective from day 1 itself [ if taken as prescribed] and if you still want to exercise more caution then 7 days after the first pill is the time when there should not be any worries.
Already you have taken it for 12 days, so do not worry, you are safe now.
Hope this satisfies your query.
Thanks for using HCM.
Feel free to ask any more questions that you may have.
Dr Madhuri Bagde
Consultant Obstetrician and Gynecologist
I understand the concern.
Even though the literature does suggest that a few antibiotics may interfere with the pills most of the time they are antibiotics that affect the liver function like anti tuberculosis drugs etc. A single dose of tetracyclin will not cause any effect. Also most liklely it was out of the system before you even started the pill.
The pill will be most likely effective from day 1 itself [ if taken as prescribed] and if you still want to exercise more caution then 7 days after the first pill is the time when there should not be any worries.
Already you have taken it for 12 days, so do not worry, you are safe now.
Hope this satisfies your query.
Thanks for using HCM.
Feel free to ask any more questions that you may have.
Dr Madhuri Bagde
Consultant Obstetrician and Gynecologist
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