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Drugs Hub

Maternal-Fetal Safety

Pregnancy Registry

Evidence-based reference for medication safety during pregnancy and lactation. Verify FDA categories, trimester-specific risks, and breastfeeding compatibility.

Check Medication Safety

FDA Categories

Instant access to FDA pregnancy categories (A, B, C, D, X) for over 8,240 prescription agents.

Trimester Guidance

Specific clinical guidance for the first, second, and third trimesters of development.

Lactation Ratings

Briggs lactation ratings and breastfeeding safety notes for maternal pharmacology.

Commonly Searched Pregnancy Safety Questions

Valacyclovir (Valtrex) in PregnancyFDA Category BFlecainide in PregnancyFDA Category CVraylar (Cariprazine) During PregnancyNeonatal RiskNasacort Safe in Pregnancy?Intranasal SteroidPulmicort in PregnancyInhaled CorticosteroidAimovig Pregnancy CategoryCGRP AntagonistRobaxin While PregnantMuscle RelaxantAllegra Pregnancy CategoryFDA Category CTizanidine in PregnancyMuscle RelaxantSodium Zirconium Cyclosilicate PregnancyPotassium BinderCefuroxime in PregnancyFDA Category BCiprodex in PregnancyOtic DropsHaloperidol Pregnancy CategoryFDA Category CDicyclomine Pregnancy CategoryFDA Category BHydrochlorothiazide & BreastfeedingThiazide DiureticRocephin (Ceftriaxone) Pregnancy CategoryFDA Category BTagrisso in PregnancyEGFR InhibitorAcalabrutinib Pregnancy SafetyBTK InhibitorEylea Breastfeeding SafetyAnti-VEGFCalcium Gluconate in PregnancyElectrolyteAirsupra Pregnancy CategoryRescue InhalerFlonase Pregnancy CategoryIntranasal Steroid

High Risk Alerts

View All Monographs

Information provided here is for clinical reference only. Pregnancy safety data evolves rapidly; always consult the latest FDA labeling and maternal-fetal medicine specialists before making prescribing decisions.

Contraindicated AgentFDA RiskClinical Summary

ACETAMINOPHEN AND CODEINE PHOSPHATE

Cat Positive

CNS depressants including alcohol and benzodiazepines increase sedation risk Life-threatening respiratory depression may occur especially in CYP2D6 ultra-rapid metabolizers.

ACETAMINOPHEN AND HYDROCODONE BITARTRATE

Cat Positive

CNS depressants including alcohol and benzodiazepines increase sedation risk Life-threatening respiratory depression may occur.

ACETAMINOPHEN AND IBUPROFEN

Cat Positive

ACE inhibitors and ARBs may have diminished antihypertensive effect Increases risk of serious cardiovascular thrombotic events and GI bleeding.

ACETAMINOPHEN, ASPIRIN AND CAFFEINE

Cat Positive

Anticoagulants like warfarin increase bleeding risk Concomitant use with other NSAIDs increases GI toxicity Risk of Reye's syndrome in children and teenagers with viral infections.

ACETAMINOPHEN, ASPIRIN, AND CODEINE PHOSPHATE

Cat Positive

CNS depressants including alcohol and benzodiazepines increase sedation risk Life-threatening respiratory depression may occur especially in CYP2D6 ultra-rapid metabolizers.

ACETAMINOPHEN, CAFFEINE AND DIHYDROCODEINE BITARTRATE

Cat Positive

CNS depressants including alcohol and benzodiazepines increase sedation risk Life-threatening respiratory depression may occur especially in CYP2D6 ultra-rapid metabolizers.

ACETAMINOPHEN; OXYCODONE HYDROCHLORIDE

Cat Positive

CNS depressants including alcohol and benzodiazepines increase sedation risk Life-threatening respiratory depression may occur.

ACETIC ACID W/ HYDROCORTISONE

Cat Positive

CYP3A4 inducers (eg phenytoin) may decrease efficacy and inhibitors may increase effects Can cause hyperglycemia and adrenal suppression with prolonged use.

ACTIFED W/ CODEINE

Cat Positive

CNS depressants including alcohol and benzodiazepines increase sedation risk Life-threatening respiratory depression may occur especially in CYP2D6 ultra-rapid metabolizers.

ADAPALENE

Cat X

No major systemic drug interactions due to minimal absorption Use of abrasive soaps or cosmetics may cause significant irritation Avoid excessive sun exposure.