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2 Interactions found for:

Singulair
Interactions Summary
  • 0 Major
  • 0 Moderate
  • 2 Minor
  • Singulair

Drug Interactions

A total of 86 medications are known to interact with Singulair.
Please add another medication to view potential interactions with this medication.

Common Interactions Checks

Drug and Food Interactions

No food interactions were found for selected drugs: Singulair

This does not necessarily mean no interactions exist. Always consult your healthcare provider.

Drug and Pregnancy Interactions

The following applies to the ingredients: Montelukast (found in Singulair)

Professional Content

The manufacturer makes no recommendation regarding use during pregnancy.

AU TGA pregnancy category: B1
US FDA pregnancy category: Not assigned

Comments:
-Available data from decades of studies have not established a drug-associated increase in major birth defects when used during pregnancy.
-Animal studies at up to 110 times the maximum recommended human daily oral dose administered during organogenesis did not show adverse developmental effects.
-Poorly or moderately controlled asthma increases maternal risk and the risk of adverse perinatal outcomes (e.g. preeclampsia, prematurity, low birth weight, small for gestational age).

Animal studies of oral administration during organogenesis at up to 110 times the maximum recommended human daily oral dose did not cause any averse developmental effects. Human data from prospective and retrospective cohort studies have not identified an increase in major birth defects when this drug was used during pregnancy; limitations of the studies include small sample size, retrospective data collection, and inconsistent comparator groups. There are no controlled data in human pregnancy. The background birth defect and miscarriage risk for the indicated population is not known. In the US general population, the estimated major birth defect risk is 2 to 4% and the miscarriage risk is 15 to 20%.

AU TGA pregnancy category B1: Drugs which have been taken by only a limited number of pregnant women and women of childbearing age, without an increase in the frequency of malformation or other direct or indirect harmful effects on the human fetus having been observed. Studies in animals have not shown evidence of an increased occurrence of fetal damage.
US FDA pregnancy category Not Assigned: The US FDA has amended the pregnancy labeling rule for prescription drug products to require labeling that includes a summary of risk, a discussion of the data supporting that summary, and relevant information to help health care providers make prescribing decisions and counsel women about the use of drugs during pregnancy. Pregnancy categories A, B, C, D, and X are being phased out.

References

  1. "Product Information. Singulair (montelukast)." Merck & Co, Inc, West Point, PA.
  2. "Product Information. Montelukast Sodium (montelukast)." Ajanta Pharma USA, Bridgewater, NJ.
  3. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  4. Cerner Multum, Inc. "Australian Product Information." O 0
  5. Sarkar M, Koren G, Kalra S, et al. "Montelukast use during pregnancy: a multicentre, prospective, comparative study of infant outcomes." Eur J Clin Pharmacol 65 (2009): 1259-64

Drug and Breastfeeding Interactions

The following applies to the ingredients: Montelukast (found in Singulair)

Professional Content

The manufacturer makes no recommendation regarding use during lactation.

Excreted into human milk: Yes

Comments:
-A published study reports presence of this drug in human milk.
-Available data do not suggest significant risk of adverse events in the infant from exposure through breast milk or direct exposure.
-There is no information regarding this drug on the effects on milk production.
-Consider the developmental and health benefits of breastfeeding along with the mother's clinical need for this medication as well as any potential adverse effects from this drug or the underlying maternal condition.

References

  1. "Product Information. Singulair (montelukast)." Merck & Co, Inc, West Point, PA.
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  3. Cerner Multum, Inc. "Australian Product Information." O 0
  4. "Product Information. Montelukast Sodium (montelukast)." Ajanta Pharma USA, Bridgewater, NJ.

Therapeutic Duplication Warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

Switch to: Professional Interactions

Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.

Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

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