Pseudoephedrine Pregnancy and Breastfeeding Warnings
Pseudoephedrine is also known as: Allermed, Cenafed, Children's Dimetapp Decongestant Infant, Chlor-Trimeton Nasal Decongestant, Contac Cold, Drixoral Non-Drowsy, ElixSure Congestion, Entex, Genaphed, Novafed, Ridafed, Seudotabs, Silfedrine, Sudafed 12-Hour, Sudafed 24-Hour, Sudafed Children's Nasal Decongestant, Sudafed Congestion, SudoGest, SudoGest 12 Hour, Sudrine, Superfed, Suphedrin, Suphedrine, Unifed, nasofed
Pseudoephedrine Pregnancy Warnings
A case-controlled surveillance study reported an elevated relative risk (3.2) of gastroschisis with first-trimester pseudoephedrine use in 76 cases. Relative risks for other drugs were 1.6 for salicylates, 1.7 for acetaminophen, 1.3 for ibuprofen, and 1.5 for phenylpropanolamine (not significant). The authors hypothesized vascular disruption was the etiology of gastroschisis. A second group of 416 infants with heterogeneous defects suspected to have a vascular etiology were reviewed. There was no increased risk associated with salicylates, ibuprofen, pseudoephedrine, phenylpropanolamine or other decongestants. These data require independent confirmation. In a review of 229,101 deliveries to Michigan Medicaid patients, 940 first-trimester exposures to pseudoephedrine were recorded and 1919 exposures anytime during pregnancy. A total of 37 birth defects were reported with first trimester exposure (40 expected) and included (observed/expected) 3/9 cardiovascular defects, 2 oral clefts, and 3/2 polydactyly. These researchers reviewed nine cases of abdominal wall defects in the 1980-1983 Medicaid data. Seven of the nine cases occurred in 3752 woman who had taken pseudoephedrine for a relative risk of 1.8. Only one of these cases was a surgically treated abdominal wall defect. (written communication, Franz Rosa, MD, Food and Drug Administration, 1994). The Collaborative Perinatal Project monitored 50,282 mother-child pairs. Only 39 first-trimester exposures to pseudoephedrine were recorded, with one birth defect observed. For use anytime during pregnancy, 194 exposures were recorded with 3 birth defects observed (3.22 expected). The effect of pseudoephedrine on uterine and fetal blood was studied in 12 healthy pregnant women between 26 and 40 weeks gestation. Following a single 60 mg dose of pseudoephedrine, no significant effect was seen on fetal heart rate, uterine blood flow, or fetal aortic blood flow.
Pseudoephedrine has not been formally assigned to a pregnancy category by the FDA. Animal studies have not been reported. There are no controlled data in human pregnancy. Based on available data, pseudoephedrine is not thought to be teratogenic. Pseudoephedrine is only recommended for use during pregnancy when benefit outweighs risk.
Pseudoephedrine Breastfeeding Warnings
Three mothers given pseudoephedrine demonstrated milk concentrations consistently higher than plasma concentrations. Maximum milk concentrations were reached at 1 to 1.5 hours after dosing. In one woman, the milk:plasma concentration ratio at 1, 3, and 12 hours was 3.3, 3.9, and 2.6. The authors calculated that 1000 mL of breast milk consumed over 24 hours would provide an infant with 0.25 to 0.33 mg of pseudoephedrine, or 0.5% to 0.7% of the dose ingested by the mother.
Pseudoephedrine is excreted into human milk. The effects in the nursing infant are unknown. The American Academy of Pediatrics considers pseudoephedrine to be compatible with breast-feeding.
References for pregnancy information
- Werler MM, Mitchell AA, Shapiro S "First trimester maternal medication use in relation to gastroschisis." Teratology 45 (1992): 361-7
- Heinonen O, Slone D, Shapiro S; Kaufman DW ed. "Birth Defects and Drugs in Pregnancy." Littleton, MA: Publishing Sciences Group, Inc. (1977): 297
- Smith CV, Rayburn WF, Anderson JC, Duckworth AF, Appel LL "Effect of a single dose of oral pseudoephedrine on uterine and fetal Doppler blood flow." Obstet Gynecol 76 (1990): 803-6
References for breastfeeding information
- Committee on Drugs, 1992 to 1993 "The transfer of drugs and other chemicals into human milk." Pediatrics 93 (1994): 137-50
- Findlay JW, Butz RF, Sailstad JM, Warren JT, Welch RM "Pseudoephedrine and triprolidine in plasma and breast milk of nursing mothers." Br J Clin Pharmacol 18 (1984): 901-6
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