Concerns About Medication Use During Pregnancy: What You Need to Know - Pharmacology

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Medications during pregnancy


Hello, pharmacist.
My last menstrual period was on January 29, and I tested positive for pregnancy on March 4.
Prior to knowing I was pregnant, I took three "Bradoral" lozenges, which contain Domiphen Bromide 0.5 mg and Dodecyldimethyl(2-phenoxyethyl)ammonium bromide.
I forgot the exact timing of the doses, but it was approximately between February 22 and March 3.
I am very concerned about whether this will affect the fetus.
I have consulted with both my prenatal care hospital and a regular pharmacy, and they informed me that the medication is not classified, so they cannot determine its effects on pregnant women.
I also consulted with obstetricians; some said it would not have an impact, while others suggested further consultation for a definitive answer.
I would like to ask you, pharmacist, whether this medication and the dosage I took could have any adverse effects on the fetus.
Thank you!

someone, 30~39 year old female. Ask Date: 2010/05/31

Dr. Ke Bowen reply Pharmacology


Hello, Domiphen Bromide 0.5 mg is a cationic surfactant that has a high affinity for bacterial cell membranes.
It alters the permeability of the cell membrane, leading to the release of protoplasm and a reduction in bacterial oxygen consumption, thereby achieving bactericidal effects, including against Candida species.
This describes the pharmacological action of the drug.
Its indications include pharyngitis, stomatitis, and sore throat caused by excessive phlegm.
Upon reviewing available resources, this medication is indeed classified as having a risk level for use in pregnant women.
However, based on my professional judgment, it is unlikely to have an adverse effect.
Nonetheless, individual circumstances may vary, so it is essential to consult your obstetrician-gynecologist, who will make the best judgment based on your specific situation.
Thank you for your attention.
Sincerely, Pharmacist Ke Bo-Wen, Director of the Pharmacy Department.

Reply Date: 2010/05/31

More Info


When it comes to medication use during pregnancy, it is essential to approach the subject with caution and informed understanding. The concern you have regarding the use of "康喉Bradoral" lozenges, which contain Domiphen Bromide and Dodecyldimethyl(2-phenoxyethyl)ammonium bromide, is valid, especially since you were unaware of your pregnancy during the time of consumption.

First, let's discuss the potential risks associated with the ingredients in the lozenges. Domiphen Bromide is an antihistamine that is often used to relieve symptoms of cough and throat irritation. While there is limited data on its safety during pregnancy, it is generally classified as a Category C drug by the FDA. This means that animal reproduction studies have shown an adverse effect on the fetus, but there are no adequate and well-controlled studies in pregnant women. Therefore, the use of this medication should be considered only if the potential benefits justify the potential risks to the fetus.

Dodecyldimethyl(2-phenoxyethyl)ammonium bromide is a quaternary ammonium compound that is primarily used for its antiseptic properties. Similar to Domiphen Bromide, there is limited information available regarding its safety during pregnancy. The lack of classification indicates that there has not been enough research to determine its effects on pregnant women or fetuses.

Given that you took these lozenges between February 22 and March 3, and you confirmed your pregnancy on March 4, it is crucial to consider the timing of exposure. The first trimester is a critical period for fetal development, as this is when the major organs and systems are forming. However, the early stages of pregnancy, particularly before implantation and during the first few weeks, may have a lower risk of teratogenic effects from medications, as the embryo is still in the process of cell division and differentiation.

You mentioned that you consulted with both a pharmacy and your obstetrician, receiving mixed responses regarding the potential impact of the lozenges on your pregnancy. This is not uncommon, as the effects of medications can vary widely depending on individual circumstances, including the dosage, timing, and the specific health profile of the mother and fetus.

In your case, since you have already stopped taking the lozenges and are now aware of your pregnancy, the best course of action is to monitor your pregnancy closely and maintain regular check-ups with your healthcare provider. If you have any specific concerns about fetal development or any symptoms you may be experiencing, do not hesitate to reach out to your obstetrician for further evaluation and reassurance.

In conclusion, while there is no definitive evidence to suggest that the use of "康喉Bradoral" lozenges during the early weeks of your pregnancy will have adverse effects on your fetus, it is always best to err on the side of caution. Future medication use during pregnancy should always be discussed with your healthcare provider to ensure the safety of both you and your developing baby. Remember that maintaining open communication with your healthcare team is key to navigating any concerns you may have during this important time.

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