3 Interactions found for:
Drug Interactions
A total of 720 medications are known to interact with amitriptyline. Add another medication to view potential interactions with this medication.
Drug and Food Interactions
Moderate
Amitriptyline
+ Food
The following applies to the ingredients: Amitriptyline
Ask your doctor before using amitriptyline together with ethanol, this can alter the effects of amitriptyline and cause increased side effects. Call the doctor if you experience uneven heartbeats, extreme drowsiness, confusion, agitation, vomiting, blurred vision, sweating, muscle stiffness, feeling light-headed, and seizures. You should be warned not to exceed recommended dosages, to avoid alcohol, and to avoid activities requiring mental alertness. If your doctor prescribes these medications together, you may need a dose adjustment to safely take this combination. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor.
The following applies to the ingredients: Amitriptyline
Professional Content
MONITOR: Smoking cessation may lead to elevated plasma concentrations and enhanced pharmacologic effects of drugs that are substrates of CYP450 1A2 (and possibly CYP450 1A1) and/or certain drugs with a narrow therapeutic index (e.g., flecainide, pentazocine). One proposed mechanism is related to the loss of CYP450 1A2 and 1A1 induction by polycyclic aromatic hydrocarbons in tobacco smoke; when smoking cessation agents are initiated and smoking stops, the metabolism of certain drugs may decrease leading to increased plasma concentrations. The mechanism by which smoking cessation affects narrow therapeutic index drugs that are not known substrates of CYP450 1A2 or 1A1 is unknown. The clinical significance of this interaction is unknown as clinical data are lacking.
MANAGEMENT: Until more information is available, caution is advisable if smoking cessation agents are used concomitantly with drugs that are substrates of CYP450 1A2 or 1A1 and/or those with a narrow therapeutic range. Patients receiving smoking cessation agents may require periodic dose adjustments and closer clinical and laboratory monitoring of medications that are substrates of CYP450 1A2 or 1A1.
References
- "Product Information. Cytisine (cytisinicline)." Consilient Health Ltd (2024):
- jeong sh, Newcombe D, sheridan j, Tingle M "Pharmacokinetics of cytisine, an a4 b2 nicotinic receptor partial agonist, in healthy smokers following a single dose." Drug Test Anal 7 (2015): 475-82
- Vaughan DP, Beckett AH, Robbie DS "The influence of smoking on the intersubject variation in pentazocine elimination." Br J Clin Pharmacol 3 (1976): 279-83
- Zevin S, Benowitz NL "Drug interactions with tobacco smoking: an update" Clin Pharmacokinet 36 (1999): 425-38
Drug and Pregnancy Interactions
Major
Amitriptyline
+ Pregnancy
The following applies to the ingredients: Amitriptyline
Professional Content
This drug should be used during pregnancy only if the benefit outweighs the risk to the fetus.
AU TGA pregnancy category: C
US FDA pregnancy category: Not assigned
Risk summary: Inadequate data available on the use of this drug in pregnant women to inform a drug-related risk.
Comments:
-Withdrawal symptoms have been reported in neonates whose mothers had taken tricyclic antidepressants during the last trimester of pregnancy.
-Cardiac problems, irritability, respiratory distress, muscle spasms, seizures, and urinary retention have been reported in infants whose mothers received tricyclic antidepressants immediately prior to delivery.
-A pregnancy exposure registry is available.
Animal studies have revealed evidence of reduced pregnancy rates, interference of central monoamine transmission, and ossification delays. Placental transfer has been observed. Limb deformities and developmental delay have been reported in infants whose mothers had taken this drug during pregnancy. There are no adequate and well-controlled studies in pregnant women.
To monitor maternal-fetal outcomes of pregnant women exposed to antidepressant therapy, a National Pregnancy Registry for Antidepressants has been established. Healthcare providers are encouraged to prospectively register patients. For additional information: https://womensmentalhealth.org/clinical-and-research-programs/pregnancyregistry/antidepressants/
AU TGA pregnancy category C: Drugs which, owing to their pharmacological effects, have caused or may be suspected of causing, harmful effects on the human fetus or neonate without causing malformations. These effects may be reversible. Accompanying texts should be consulted for further details.
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
- "Product Information. Elavil (amitriptyline)." Stuart Pharmaceuticals PROD (2002):
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- Cerner Multum, Inc. "Australian Product Information." O 0
- "Product Information. Amitriptyline Hydrochloride (amitriptyline)." Rising Pharma Holdings Inc (2025):
Drug and Breastfeeding Interactions
Major
Amitriptyline
+ Breastfeeding
The following applies to the ingredients: Amitriptyline
Professional Content
A decision should be made to discontinue breastfeeding or discontinue the drug, taking into account the importance of the drug to the mother.
Excreted into human milk: Yes
Comments:
-The effects in the nursing infant are unknown.
-The American Academy of Pediatrics classifies this drug as an agent whose effects on the nursing infant are unknown but may be of concern.
-The WHO classifies this drug as compatible with breastfeeding in doses up to 150 mg/day.
References
- "Product Information. Elavil (amitriptyline)." Stuart Pharmaceuticals PROD (2002):
- Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
- Cerner Multum, Inc. "Australian Product Information." O 0
- United States National Library of Medicine "Toxnet. Toxicology Data Network. http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT" (2013):
- Department of Adolescent and Child Health and Development. UNICEF. World Health Organization "Breastfeeding and maternal medication: recommendations for drugs in the eleventh Who model list of essential drugs. http://whqlibdoc.who.int/hq/2002/55732.pdf?ua=1" (2014):
- Briggs GG, Freeman RK. "Drugs in Pregnancy and Lactation." Philadelphia, PA: Wolters Kluwer Health (2015):
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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