Aztreonam Pregnancy

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Pregnancy of Aztreonam in details

Pregnancy is always a special situation where every action or side effect of the drug varies when compared to a situation of a non-pregnant patient. It is not only because the pregnant woman's metabolism differs due to the hormonal and other changes happened to her, but also because every medicine or its metabolite passes to the baby and shows its action there. The only thing is, be cautious, attentive and well supervised when you take any single drug in pregnancy. The interactions can vary in pregnancy, and the dosage may differ as well. Strict supervision of the Physician is mandatory.

Aztreonam crosses the placenta and reaches the fetal circulation following IV administration; however, peak plasma concentrations following inhalation of Aztreonam are significantly less than those observed following Aztreonam IV.

Due to its poor systemic absorption, use of Aztreonam inhalation is likely acceptable for the management of cystic fibrosis in pregnant patients with Pseudomonas aeruginosa (Kroon 2018; Middleton 2019). When required, use may continue during pregnancy (Middleton 2019).

Aztreonam breastfeeding

When a drug is taken when the patient is breast feeding, a part of the drug is secreted in her breast milk and is passed to the baby. The dosage of the medicine to mother and baby are different, and many drugs actions are side effects when you take them without a disease, and what if you the baby takes them without a disease? What if the drug is contraindicated in newborns, infants or children? So, breastfeeding is a very alarming situation when the mother is on medications. Ask your Physician or Pediatrician about the effect of the drug on the baby and how much is excreted in breast milk and if it harms the baby!

Aztreonam is excreted into human milk in small amounts that are less than 1% of maternal serum concentrations. Systemic effects in the infant are considered unlikely. Aztreonam is considered compatible with breast-feeding by the American Academy of Pediatrics.

See references

References for pregnancy information

  1. "Product Information. Azactam (Aztreonam)." Bristol-Myers Squibb, Princeton, NJ.
  2. "Product Information. Cayston (Aztreonam)." Gilead Sciences, Foster City, CA.

References for breastfeeding information

  1. Committee on Drugs, 1992 to 1993 "The transfer of drugs and other chemicals into human milk." Pediatrics 93 (1994): 137-50
  2. Fleiss PM, Richwald GA, Gordon J, et al "Aztreonam in human serum and breast milk." Br J Clin Pharmacol 19 (1985): 509-11
  3. Briggs GG, Freeman RK, Yaffe SJ.. "Drugs in Pregnancy and Lactation. 5th ed." Baltimore, MD: Williams & Wilkins (1998):
  4. "Product Information. Cayston (Aztreonam)." Gilead Sciences, Foster City, CA.
  5. "Product Information. Azactam (Aztreonam)." Bristol-Myers Squibb, Princeton, NJ.



  1. DailyMed. "AZTREONAM: DailyMed provides trustworthy information about marketed drugs in the United States. DailyMed is the official provider of FDA label information (package inserts).". (accessed September 17, 2018).
  2. PubMed Health. "Aztreonam (By breathing): This section provide the link out information of drugs collectetd in PubMed Health. ". (accessed September 17, 2018).
  3. Human Metabolome Database (HMDB). "Aztreonam: The Human Metabolome Database (HMDB) is a freely available electronic database containing detailed information about small molecule metabolites found in the human body.". (accessed September 17, 2018).


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Information checked by Dr. Sachin Kumar, MD Pharmacology

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