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20 Apr 2006

Triphasil question
Hi Pharmadoc!!

please answer a really stupid question for me...

these are the facts:
1. i went onto triphasil last month on the 13th
2. my period is regular but cycles are erratic in length. in the last 5 cycles it's been 28, 30, 26, 28, 30 days long.

what i want to know is how long is it before the pill becames 100% effective?
the nurse told me 14 days the doctor said 3 months.
so i'm a bit confused, please help me out.

thanks and have a good day.
Answer 315 views
Expert
Pharmacist
pharmacist

01 Jan 0001

The length of time it takes for the birth control to become completely effective as a sole contraceptive varies depending on the type of pill you use and when you start the packet of pills.
If taken from the first day of your cycle, the pill can be effective as birth control in 7 to 28 days after beginning the first pack. I recommend that you use a back up method of contraception for one month after beginning the first pack just to be safe.
It is also worth remembering that taking other medications such as antibiotics can reduce the effectiveness of the contraceptive pill, and your doctor may recommend that you use an additional form of protection during this time. Similarly, stomach upsets such as sickness and diarrhoea can affect the absorption of the pill, so again, using an additional method such as a condom can help make sure pregnancy doesn't occur.

The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical examination, diagnosis and formal advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.
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