levocetirizine and acetaminophen/phenyltoloxamine both increase sedation. Use Caution/Monitor.
acrivastine and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and alprazolam both increase sedation. Use Caution/Monitor.
levocetirizine increases toxicity of amifampridine by Other (see comment). Modify Therapy/Monitor Closely. Comment: Amifampridine can cause seizures. Coadministration with drugs that lower seizure threshold may increase this risk.
amisulpride and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and amitriptyline both increase sedation. Use Caution/Monitor.
levocetirizine and amobarbital both increase sedation. Use Caution/Monitor.
levocetirizine and amoxapine both increase sedation. Use Caution/Monitor.
levocetirizine and aripiprazole both increase sedation. Use Caution/Monitor.
asenapine and levocetirizine both increase sedation. Use Caution/Monitor.
asenapine transdermal and levocetirizine both increase sedation. Use Caution/Monitor.
avapritinib and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and baclofen both increase sedation. Use Caution/Monitor.
benzhydrocodone/acetaminophen and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and brexanolone both increase sedation. Use Caution/Monitor.
brexpiprazole and levocetirizine both increase sedation. Use Caution/Monitor.
brimonidine and levocetirizine both increase sedation. Use Caution/Monitor.
brivaracetam and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and brompheniramine both increase sedation. Use Caution/Monitor.
buprenorphine subdermal implant and levocetirizine both increase sedation. Use Caution/Monitor.
buprenorphine transdermal and levocetirizine both increase sedation. Use Caution/Monitor.
buprenorphine, long-acting injection and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and butabarbital both increase sedation. Use Caution/Monitor.
levocetirizine and butalbital both increase sedation. Use Caution/Monitor.
levocetirizine and butorphanol both increase sedation. Use Caution/Monitor.
levocetirizine and carbinoxamine both increase sedation. Use Caution/Monitor.
cariprazine and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and carisoprodol both increase sedation. Use Caution/Monitor.
levocetirizine and cenobamate both increase sedation. Use Caution/Monitor.
levocetirizine and cetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and chlordiazepoxide both increase sedation. Use Caution/Monitor.
levocetirizine and chlorpheniramine both increase sedation. Use Caution/Monitor.
levocetirizine and chlorpromazine both increase sedation. Use Caution/Monitor.
levocetirizine and chlorzoxazone both increase sedation. Use Caution/Monitor.
levocetirizine and clemastine both increase sedation. Use Caution/Monitor.
levocetirizine, clobazam. Other (see comment). Use Caution/Monitor. Comment: Concomitant administration can increase the potential for CNS effects (e.g., increased sedation or respiratory depression).levocetirizine and clobazam both increase sedation. Use Caution/Monitor.
levocetirizine and clomipramine both increase sedation. Use Caution/Monitor.
levocetirizine and clonazepam both increase sedation. Use Caution/Monitor.
levocetirizine and clonidine both increase sedation. Use Caution/Monitor.
levocetirizine and clorazepate both increase sedation. Use Caution/Monitor.
levocetirizine and clozapine both increase sedation. Use Caution/Monitor.
levocetirizine and cyclobenzaprine both increase sedation. Use Caution/Monitor.
levocetirizine and cyproheptadine both increase sedation. Use Caution/Monitor.
levocetirizine and dantrolene both increase sedation. Use Caution/Monitor.
levocetirizine and daridorexant both increase sedation. Modify Therapy/Monitor Closely. Coadministration increases risk of CNS depression, which can lead to additive impairment of psychom*otor performance and cause daytime impairment.
levocetirizine and desflurane both increase sedation. Use Caution/Monitor.
levocetirizine and desipramine both increase sedation. Use Caution/Monitor.
desloratadine and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and deutetrabenazine both increase sedation. Use Caution/Monitor.
levocetirizine and dexbrompheniramine both increase sedation. Use Caution/Monitor.
levocetirizine and dexchlorpheniramine both increase sedation. Use Caution/Monitor.
levocetirizine and diazepam both increase sedation. Use Caution/Monitor.
diazepam intranasal, levocetirizine.Either increases effects of the other by pharmacodynamic synergism. Use Caution/Monitor. Coadministration may potentiate the CNS-depressant effects of each drug.
levocetirizine and difenoxin hcl both increase sedation. Use Caution/Monitor.
levocetirizine and dimenhydrinate both increase sedation. Use Caution/Monitor.
levocetirizine and diphenhydramine both increase sedation. Use Caution/Monitor.
levocetirizine and diphenoxylate hcl both increase sedation. Use Caution/Monitor.
donepezil transdermal, levocetirizine.Either decreases effects of the other by pharmacodynamic antagonism. Use Caution/Monitor.
levocetirizine and doxepin both increase sedation. Use Caution/Monitor.
levocetirizine and doxylamine both increase sedation. Use Caution/Monitor.
levocetirizine and droperidol both increase sedation. Use Caution/Monitor.
levocetirizine and efavirenz both increase sedation. Use Caution/Monitor.
levocetirizine and entacapone both increase sedation. Use Caution/Monitor.
esketamine intranasal, levocetirizine.Either increases toxicity of the other by sedation. Modify Therapy/Monitor Closely.
levocetirizine and estazolam both increase sedation. Use Caution/Monitor.
levocetirizine and eszopiclone both increase sedation. Use Caution/Monitor.
levocetirizine and ethanol both increase sedation. Use Caution/Monitor.
levocetirizine and ethosuximide both increase sedation. Use Caution/Monitor.
levocetirizine and ethotoin both increase sedation. Use Caution/Monitor.
levocetirizine and felbamate both increase sedation. Use Caution/Monitor.
levocetirizine and fenfluramine both increase sedation. Use Caution/Monitor.
fentanyl and levocetirizine both increase sedation. Use Caution/Monitor.
fentanyl intranasal and levocetirizine both increase sedation. Use Caution/Monitor.
fentanyl iontophoretic transdermal system and levocetirizine both increase sedation. Use Caution/Monitor.
fentanyl transdermal and levocetirizine both increase sedation. Use Caution/Monitor.
fentanyl transmucosal and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and fexofenadine both increase sedation. Use Caution/Monitor.
levocetirizine and flibanserin both increase sedation. Use Caution/Monitor.
levocetirizine and fluphenazine both increase sedation. Use Caution/Monitor.
levocetirizine and flurazepam both increase sedation. Use Caution/Monitor.
gabapentin, levocetirizine.Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of CNS depressants can result in serious, life-threatening, and fatal respiratory depression. Use lowest dose possible and monitor for respiratory depression and sedation.levocetirizine and gabapentin both increase sedation. Use Caution/Monitor.
gabapentin enacarbil, levocetirizine.Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of CNS depressants can result in serious, life-threatening, and fatal respiratory depression. Use lowest dose possible and monitor for respiratory depression and sedation.
levocetirizine and ganaxolone both increase sedation. Use Caution/Monitor.
levocetirizine and guanfacine both increase sedation. Use Caution/Monitor.
levocetirizine and haloperidol both increase sedation. Use Caution/Monitor.
levocetirizine decreases effects of hyaluronidase by Other (see comment). Use Caution/Monitor. Comment: Antihistamines, when given in large systemic doses, may render tissues partially resistant to the action of hyaluronidase. Patients may require larger amounts of hyaluronidase for equivalent dispersing effect. .
levocetirizine and hydroxyzine both increase sedation. Use Caution/Monitor.
levocetirizine and iloperidone both increase sedation. Use Caution/Monitor.
levocetirizine and imipramine both increase sedation. Use Caution/Monitor.
levocetirizine and isoflurane both increase sedation. Use Caution/Monitor.
levocetirizine and ketamine both increase sedation. Use Caution/Monitor.
levocetirizine and ketotifen, drug-eluting contact lens both increase sedation. Use Caution/Monitor.
levocetirizine and lamotrigine both increase sedation. Use Caution/Monitor.
levocetirizine and lasmiditan both increase sedation. Use Caution/Monitor.
levocetirizine and lemborexant both increase sedation. Use Caution/Monitor.
levetiracetam and levocetirizine both increase sedation. Use Caution/Monitor.levocetirizine and levetiracetam both increase sedation. Use Caution/Monitor.
levocetirizine and levorphanol both increase sedation. Use Caution/Monitor.
levocetirizine and loratadine both increase sedation. Use Caution/Monitor.loratadine and levocetirizine both increase sedation. Use Caution/Monitor.
levocetirizine and lorazepam both increase sedation. Use Caution/Monitor.
levocetirizine and loxapine both increase sedation. Use Caution/Monitor.
levocetirizine and lumateperone both increase sedation. Use Caution/Monitor.lumateperone and levocetirizine both increase sedation. Use Caution/Monitor.
lurasidone, levocetirizine.Either increases toxicity of the other by Other (see comment). Use Caution/Monitor. Comment: Potential for increased CNS depressant effects when used concurrently; monitor for increased adverse effects and toxicity.levocetirizine and lurasidone both increase sedation. Use Caution/Monitor.
levocetirizine and maprotiline both increase sedation. Use Caution/Monitor.
levocetirizine and meclizine both increase sedation. Use Caution/Monitor.
levocetirizine and meperidine both increase sedation. Use Caution/Monitor.
levocetirizine and meprobamate both increase sedation. Use Caution/Monitor.
levocetirizine and metaxalone both increase sedation. Use Caution/Monitor.
levocetirizine and methocarbamol both increase sedation. Use Caution/Monitor.
methohexital and levocetirizine both increase sedation. Use Caution/Monitor.levocetirizine and methohexital both increase sedation. Use Caution/Monitor.
levocetirizine and methsuximide both increase sedation. Use Caution/Monitor.
levocetirizine and midazolam both increase sedation. Use Caution/Monitor.
midazolam intranasal, levocetirizine.Either increases toxicity of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Concomitant use of barbiturates, alcohol, or other CNS depressants may increase the risk of hypoventilation, airway obstruction, desaturation, or apnea and may contribute to profound and/or prolonged drug effect.
levocetirizine and mirtazapine both increase sedation. Use Caution/Monitor.
levocetirizine and molindone both increase sedation. Use Caution/Monitor.
levocetirizine and nalbuphine both increase sedation. Use Caution/Monitor.
levocetirizine and nitrous oxide both increase sedation. Use Caution/Monitor.
levocetirizine and nortriptyline both increase sedation. Use Caution/Monitor.
levocetirizine and olanzapine both increase sedation. Use Caution/Monitor.
levocetirizine and olanzapine/samidorphan both increase sedation. Use Caution/Monitor.
levocetirizine and oliceridine both increase sedation. Use Caution/Monitor.
levocetirizine and opicapone both increase sedation. Use Caution/Monitor.
levocetirizine and opium tincture both increase sedation. Use Caution/Monitor.
levocetirizine and orphenadrine both increase sedation. Use Caution/Monitor.
levocetirizine and oxazepam both increase sedation. Use Caution/Monitor.
levocetirizine and paliperidone both increase sedation. Use Caution/Monitor.
levocetirizine and pentazocine both increase sedation. Use Caution/Monitor.
levocetirizine and pentobarbital both increase sedation. Use Caution/Monitor.
levocetirizine and perampanel both increase sedation. Use Caution/Monitor.
levocetirizine and perphenazine both increase sedation. Use Caution/Monitor.
phenelzine increases effects of levocetirizine by Other (see comment). Modify Therapy/Monitor Closely. Comment: Coadministration of phenelzine and antihistamines may result in additive CNS depressant effects. MAO inhibitors also prolong and intensify anticholinergic effects of antihistamines. .
levocetirizine and pheniramine both increase sedation. Use Caution/Monitor.
levocetirizine and phenobarbital both increase sedation. Use Caution/Monitor.
levocetirizine and pimozide both increase sedation. Use Caution/Monitor.
levocetirizine and pomalidomide both increase sedation. Use Caution/Monitor.
pregabalin, levocetirizine.Either increases effects of the other by pharmacodynamic synergism. Modify Therapy/Monitor Closely. Coadministration of CNS depressants can result in serious, life-threatening, and fatal respiratory depression. Use lowest dose possible and monitor for respiratory depression and sedation.levocetirizine and pregabalin both increase sedation. Use Caution/Monitor.
levocetirizine and primidone both increase sedation. Use Caution/Monitor.
levocetirizine and prochlorperazine both increase sedation. Use Caution/Monitor.
levocetirizine and promethazine both increase sedation. Use Caution/Monitor.
levocetirizine and propofol both increase sedation. Use Caution/Monitor.
levocetirizine and protriptyline both increase sedation. Use Caution/Monitor.
levocetirizine and pyrilamine both increase sedation. Use Caution/Monitor.
levocetirizine and quazepam both increase sedation. Use Caution/Monitor.
levocetirizine and quetiapine both increase sedation. Use Caution/Monitor.
levocetirizine and ramelteon both increase sedation. Use Caution/Monitor.
levocetirizine and remimazolam both increase sedation. Use Caution/Monitor.
levocetirizine and reserpine both increase sedation. Use Caution/Monitor.
levocetirizine and risperidone both increase sedation. Use Caution/Monitor.
ritonavir increases levels of levocetirizine by decreasing metabolism. Use Caution/Monitor.
levocetirizine and scopolamine both increase sedation. Use Caution/Monitor.
levocetirizine and sevoflurane both increase sedation. Use Caution/Monitor.
levocetirizine and sodium oxybate both increase sedation. Use Caution/Monitor.
stiripentol, levocetirizine.Either increases effects of the other by sedation. Use Caution/Monitor. Concomitant use stiripentol with other CNS depressants, including alcohol, may increase the risk of sedation and somnolence.
levocetirizine and sufentanil both increase sedation. Use Caution/Monitor.
levocetirizine and sufentanil SL both increase sedation. Use Caution/Monitor.
levocetirizine and suvorexant both increase sedation. Use Caution/Monitor.
levocetirizine and tapentadol both increase sedation. Use Caution/Monitor.
levocetirizine and tasimelteon both increase sedation. Use Caution/Monitor.
levocetirizine and temazepam both increase sedation. Use Caution/Monitor.
levocetirizine and tetrabenazine both increase sedation. Use Caution/Monitor.
levocetirizine and thioridazine both increase sedation. Use Caution/Monitor.
levocetirizine and thiothixene both increase sedation. Use Caution/Monitor.
levocetirizine and tiagabine both increase sedation. Use Caution/Monitor.
levocetirizine and tizanidine both increase sedation. Use Caution/Monitor.
levocetirizine and tolcapone both increase sedation. Use Caution/Monitor.
levocetirizine and topiramate both increase sedation. Use Caution/Monitor.
levocetirizine and trazodone both increase sedation. Use Caution/Monitor.
levocetirizine and trifluoperazine both increase sedation. Use Caution/Monitor.
levocetirizine and triprolidine both increase sedation. Use Caution/Monitor.
levocetirizine and valproic acid both increase sedation. Use Caution/Monitor.
levocetirizine and vigabatrin both increase sedation. Use Caution/Monitor.
levocetirizine and zaleplon both increase sedation. Use Caution/Monitor.
levocetirizine and ziconotide both increase sedation. Use Caution/Monitor.
levocetirizine and ziprasidone both increase sedation. Use Caution/Monitor.
levocetirizine and zolpidem both increase sedation. Use Caution/Monitor.
levocetirizine and zonisamide both increase sedation. Use Caution/Monitor.
