disclose to Acetaminophen Pregnancy and Breastfeeding Warnings Acetaminophen is also known as: Acephen , Aceta, Actamin , Adprin B, Altenol , Arthritis Pain Relief , Children's Tylenol , Cipla Genpharm Paracetamol, Doliprane, Efferalgan, Elixsure Fever/Pain , Mapap , Mapap Arthritis Pain , Ofirmev , Panadol, Panadol Osteo, Paracetamol , Perfalgan, Promax, Q-Pap , Tactinal , Tylenol , Tylenol 8 Hour , Tylenol Arthritis Pain , Tylenol Extra Strength Overview Side Effects Dosage Professional Tips More Interactions Pregnancy Warnings Breastfeeding Warnings User Reviews Drug Images Support Group Q & A Compare Alternatives Pricing & Coupons Acetaminophen Pregnancy Warnings In pregnant rats receiving oral drug at doses up to 0.85 times maximum human daily dose (MHDD) during organogenesis, fetotoxicity and dose-related increases in bone variations (reduced ossification and rudimentary rib changes) were observed. Areas of necrosis in both the liver and kidney of pregnant rats and fetuses were observed when pregnant rats were given oral drug throughout gestation at doses 1.2 times the maximum human daily dose. Animal studies using the IV formulation have not been performed. Epidemiologic data, including a population based case-control study from the National Birth Defects Prevention Study (n= 11,610) and data from 26,424 live singleton births have shown no increased risk of major birth defects in children with first trimester prenatal exposure. In 2015, the US Food and Drug Administration released results of their evaluation on published research studies looking at mothers who took this drug as either an over the counter or prescription product at any time during their pregnancy and the risk of attention deficit hyperactivity (ADHD) in their babies. They found all studies reviewed had potential limitations in their designs that prevented drawing reliable conclusions. In a prospective birth cohort study (Avon Longitudinal Study or Parents and Children [ALSPAC]) maternal drug exposure was assessed by questionnaire at 18 and 32 weeks, children were assessed at 61 months. Mothers were questioned about behavioral problems in their children at 7 years old; children's behavioral problems were assessed using the Strengths and Difficulties Questionnaire (SDQ). A number of confounders were evaluated although a limitation of the study was lack of information for drug use. The authors suggest there may be an association between drug use during pregnancy and behavioral problems in childhood that may be due to an intrauterine mechanism. Further studies are needed to test alternatives to a causal explanation. There are no controlled data in human pregnancy. According to published animal studies, acetaminophen may cause reduced fertility in both males and females described as decreased testicular weights, reduced spermatogenesis, reduced fertility; and reduced implantation sites, respectively. AU TGA pregnancy category A: Drugs which have been taken by a large number of pregnant women and women of childbearing age without any proven increase in the frequency of malformations or other direct or indirect harmful effects on the fetus having been observed. 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. Benefit should outweigh risk AU TGA pregnancy category: A US FDA pregnancy category: Not Assigned Risk Summary: A clear association of drug use and birth defects, miscarriage, or adverse maternal or fetal outcomes has not been shown with human use; animal studies have demonstrated adverse events at clinically relevant doses. See references Acetaminophen Breastfeeding Warnings Caution is recommended. Excreted into human milk: Yes Comments; -This drug has been used without apparent harmful effects. -This drug is considered compatible with breastfeeding by the American Academy of Pediatrics. This drug is excreted into breast milk in very small amounts. Peak levels occur 1 to 2 hours after dosing and are undetectable after 12 hours. An infant ingesting 90 mL of breast milk every 3 hours would receive an average of 0.14% (range 0.04% to 0.23%) of the mother's dose; calculated to be a maximum maternal weight-adjusted dose of around 2%. One case of a maculopapular rash has been reported in a 2-month old nursing infant. See references References for pregnancy information "Product Information. Ofirmev (acetaminophen)." Cadence Pharmaceuticals Inc, San Diego, CA. Cerner Multum, Inc. "Australian Product Information." O 0 Stergaikoulie E, Thapar A, Davey Smith G "Association of acetaminophen use during pregnancy with behavioral problems in childhood: evidence against confounding." JAMA Pediatr 170 (2016): 964-70 U.S. Food and Drug Administration U.S. Food and Drug Administration U.S. Food and Drug Administration U.S. Food and Drug Administration "FDA Drug Safety Communication: FDA has reviewed possible risks of pain medicine use during pregnancy Available from: URL: http://www.fda.gov/Drugs/DrugSafety/ucm429117.htm." (01/09/2015): References for breastfeeding information Cerner Multum, Inc. "Australian Product Information." O 0 United States National Library of Medicine "Toxnet. Toxicology Data Network. Available from: URL: http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT." ([cited 2013 -]): Committee on Drugs, 1992 to 1993 "The transfer of drugs and other chemicals into human milk." Pediatrics 93 (1994): 137-50 "Product Information. Ofirmev (acetaminophen)." Cadence Pharmaceuticals Inc, San Diego, CA. Print this page See Also... Acetaminophen use while Breastfeeding (in more detail) Acetaminophen Consumer Information Pregnancy Support Group FDA Pregnancy Categories Medicine use during Pregnancy Medicine use while Breastfeeding Safe Medications during Breastfeeding Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Wolters Kluwer Health and Drugs.com is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This drug information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective, or appropriate for any given patient. Multum Information Services, Inc. does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. Copyright 2000-2008 Multum Information Services, Inc. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse, or pharmacist. Drug Status Rx OTC Availability Rx and/or OTC C Pregnancy Category Risk cannot be ruled out N/A CSA Schedule Not a controlled drug Approval History Drug history at FDA Acetaminophen Rating 46 User Reviews 7.1 /10 46 User Reviews 7.1 Rate it! Drug Class Miscellaneous analgesics Related Questions & Answers Is acetaminophen a blood thinner? Is acetaminophen (Tylenol) an NSAID Drug? Can I Take Tylenol While Pregnant? Can I Give My Dog Tylenol? Is Tylenol an Anti-Inflammatory Drug? Read more questions taking note of
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