Do Cold Medications Affect Birth Control Pills? Your Questions Answered - Obstetrics and Gynecology

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Will it have an impact?


Hello, Doctor.
I would like to ask a few questions.
I have been taking the oral contraceptive pill (Yueji) and today I am about to take my 21st pill.
Recently, I had a cold and initially took Taisho cold medicine, then later saw a doctor and took the medication prescribed by them.

1.
Will the Taisho cold medicine affect the efficacy of the oral contraceptive pill? (I previously asked a pharmacist and was told it does not affect it, but I am still a bit concerned.)
2.
Will the following medications prescribed by my doctor affect it? Cota cough capsules, Bisolvon, IBU4SP, Soothing Soot, Fexofenadine, DEX-CTM, DCTM, and Lyrica.
3.
Will the painkiller Ketorolac (which I am not currently taking) affect the oral contraceptive pill?
4.
I have completed my second pack of oral contraceptives and generally take them on time, occasionally taking them half an hour to an hour late.
Is my contraceptive effect stable? In previous instances, I had intimate relations with my boyfriend and we used condoms.
I also checked for leaks afterward with water and found none.
However, there were one or two times when I noticed some white discharge at the base when he pulled out, which made me worry.
Should I be concerned about the possibility of pregnancy? I also feel like my period is coming, but I am still worried.
5.
Regarding my diet while taking the oral contraceptive pill, are there any foods or drinks I should avoid? (I only know to avoid citrus and grapefruit.) Is there anything else I should be cautious about? I am worried it might affect the efficacy of the medication!
6.
Since I have been consistently taking the oral contraceptive pill without missing any doses (and I am careful not to miss any), do I need to use any additional contraceptive methods (e.g., condoms)?
7.
After taking the 21st pill today, I will take a 7-day break.
Does the contraceptive effect continue during these 7 days?
I have a lot of questions, but I need your help to clarify them.
Thank you very much for your response!

Xiao Pei, 20~29 year old female. Ask Date: 2023/07/24

Dr. Cao Guotao reply Obstetrics and Gynecology


Generally, medications do not affect the effectiveness of birth control.
It is important to take the pills around the same time each day.
The period during which you stop taking the pills is considered a safe period.
If you are taking birth control pills, you should not need to use other contraceptive methods.
Wishing you good health!

Reply Date: 2023/07/24

More Info


When it comes to the interaction between cold medications and birth control pills, it's essential to understand how different medications can affect hormonal contraceptives. Here’s a detailed breakdown of your questions and concerns.

1. Does the Japanese Daisei cold medicine affect the efficacy of birth control pills?
Generally, most over-the-counter cold medications, including those from Daisei, do not affect the effectiveness of birth control pills. The main concern with any medication is whether it can induce liver enzymes that metabolize hormones in birth control pills, potentially reducing their effectiveness. However, common cold medications typically do not have this effect. If a pharmacist has assured you that it does not interact, you can feel more confident, but always consult with your healthcare provider if you have lingering concerns.

2. What about the other medications prescribed by your doctor?
The medications you listed, such as Cota, IBU4SP, and DEX-CTM, are primarily for symptom relief and do not typically interfere with hormonal contraceptives. However, some antibiotics, particularly rifampin and certain anti-seizure medications, can reduce the effectiveness of birth control pills. Since none of the medications you mentioned are known to have this effect, you should be safe, but it’s always wise to double-check with your doctor or pharmacist.

3. Does Ketorolac (Keta-Fen) affect birth control pills?
Ketorolac is a non-steroidal anti-inflammatory drug (NSAID) used for pain relief. It does not affect the efficacy of birth control pills. As with other medications, if you have any specific concerns, consult your healthcare provider.

4. Are you at risk of pregnancy with occasional late pill-taking?
Taking your birth control pill consistently is crucial for maintaining its effectiveness. Occasional delays of up to a few hours typically do not significantly impact efficacy, especially if you have been taking your pills regularly otherwise. However, if you miss a pill or take it more than 24 hours late, you should follow the instructions provided with your medication, which often includes using backup contraception, such as condoms, for a short period.

5. Dietary considerations while on birth control pills?
You are correct that grapefruit and grapefruit juice can interact with certain medications, including some birth control pills, by affecting liver enzymes. Other than avoiding grapefruit, there are no specific dietary restrictions for most birth control pills. However, maintaining a balanced diet and staying hydrated is always beneficial for overall health.

6. Do you need additional contraception if you are taking birth control pills consistently?
If you are taking your birth control pills correctly and consistently, additional contraception is generally not necessary. However, using condoms can provide extra protection against sexually transmitted infections (STIs) and can be a good backup method in case of any missed pills.

7. Is there contraceptive protection during the 7-day break after finishing the pill pack?
Yes, if you have taken your birth control pills correctly for at least 21 days, you should still have contraceptive protection during the 7-day break. This is because the hormones from the pills remain in your system and continue to provide protection.

In conclusion, it appears that you are taking appropriate precautions regarding your birth control and have a good understanding of how to manage your medications. If you have any further concerns or experience any unusual symptoms, do not hesitate to reach out to your healthcare provider for personalized advice. It's always better to be cautious and informed when it comes to your reproductive health.

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