Pre-exposure prophylaxis (PrEP)
Hello doctor, I am the inquirer of this article (https://adoctor.tw/article/192438) and would like to continue asking questions 2 and 3.
2.
I have completed the entire pack of preemptive medication this month (I took the missed dose on the morning of February 7, and finished the last two pills on time on the evenings of February 7 and 8).
I am currently in the 21-day active and 7-day break period, and I will resume taking the medication after the 7-day break.
Since I missed a dose only in the first three days of the break period, and I did take the missed dose afterward, I am concerned about its effect on the concentration in my body.
I would like to know if there is still contraceptive efficacy during this 7-day break and the first 7 days of the next cycle, or should I use additional contraceptive measures?
3.
I have not taken emergency contraception; I have only been taking preemptive medication this month.
Is there a way to distinguish whether any bleeding is due to a missed dose or is a result of my body adjusting? If it is due to a missed dose, will normal adherence to the medication prevent further bleeding? Additionally, I would like to ask if taking lutein that contains 100mg of vitamin C regularly will affect the efficacy of the preemptive medication.
Thank you for your assistance!
Amanda, 20~29 year old female. Ask Date: 2023/02/10
Dr. Huang Yuande reply Obstetrics and Gynecology
1.
It should still have contraceptive effectiveness.
2.
If a dose is missed, it can generally be taken within 48 hours; however, if more than 48 hours have passed, the contraceptive effectiveness may be compromised.
3.
No, it will not.
Reply Date: 2023/02/10
More Info
When it comes to understanding the use of oral contraceptives, particularly in the context of your questions regarding their effectiveness and side effects, it's essential to clarify a few key points.
1. Effectiveness During the Break Period
You mentioned that you have completed a full cycle of your oral contraceptive pills and are now in the 7-day break period. Generally, if you have taken your pills correctly (i.e., without missing any doses), you should still have contraceptive protection during the 7-day break. The hormones from the pills remain in your system and continue to provide protection against pregnancy. However, if you missed pills in the last week before the break, it could potentially reduce the effectiveness. In such cases, it is advisable to use a backup method of contraception, such as condoms, during the break and the first week of the next cycle until you have taken the pills consistently for seven days.
2. Identifying Breakthrough Bleeding
Regarding your concern about breakthrough bleeding, it can sometimes be challenging to differentiate between bleeding caused by missed pills and bleeding due to your body adjusting to the hormones in the contraceptive. If you missed a pill and then took it as soon as you remembered, your body might still experience some irregular bleeding as it adjusts. Typically, if you resume taking your pills as directed, any bleeding should subside. If the bleeding continues or becomes heavy, it’s advisable to consult your healthcare provider to rule out any other underlying issues.
3. Interaction with Supplements
As for your question about taking vitamin C and its potential impact on the effectiveness of your oral contraceptive, the good news is that there is no substantial evidence to suggest that vitamin C affects the efficacy of birth control pills. However, it's always wise to discuss any supplements or medications you are taking with your healthcare provider, as individual responses can vary.
Additional Considerations
- Side Effects: Common side effects of oral contraceptives can include nausea, breast tenderness, mood changes, and breakthrough bleeding. If you experience severe side effects or symptoms that concern you, it’s important to reach out to your healthcare provider.
- Long-Term Use: Many women use oral contraceptives for extended periods for various reasons, including regulating menstrual cycles, managing symptoms of premenstrual syndrome (PMS), or for contraceptive purposes. While they are generally safe for long-term use, regular check-ups with your healthcare provider are essential to monitor your health and any potential side effects.
- Health Monitoring: Regular gynecological exams and discussions about your health history, lifestyle, and any changes in your body are crucial. This ensures that your contraceptive method remains the best choice for you.
In conclusion, as long as you have been taking your oral contraceptives correctly, you should have protection during the break period. If you have concerns about breakthrough bleeding or the effects of supplements, it’s best to consult with your healthcare provider for personalized advice. Your health and well-being are paramount, and open communication with your doctor will help you navigate any concerns you may have regarding your contraceptive use.
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