Thanks for the query.
I understand your concern.
Mucinex contains guaifenesin.
It belongs to category C drug in pregnancy.
Means animal studies have shown some possible side effects on fetus but sufficient human studies are lacking.
So, if you decided to continue the pregnancy regular antenatal checkups and ultrasound examinations are mandatory.
Ultrasound examination at 11 to 12 weeks, TIFFA (Targeted imaging for fetal anomalies) between 18 to 20 weeks and quadruple blood test at the same gestational age helps in ruling out possible anomalies to some extent.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.