Skip to content
Med Rx.

Guaifenesin + Levomenthol + Diphenhydramine interactions

Checked as Diphenhydramine in this data source.

Full monograph for Guaifenesin + Levomenthol + DiphenhydramineCheck it against another medicine

Medicines

266 documented

Medicines documented to interact with Guaifenesin + Levomenthol + Diphenhydramine, worst severity first.
MedicineSeverityMechanismEffectSources
BrexpiprazoleMajorMetabolismCoadministration with inhibitors of CYP450 3A4 and/or 2D6 may significantly increase the plasma concentrations of brexpiprazole, which is metabolized by these…5 sources — open the full entry
Potassium ChlorideMajorAbsorptionConcomitant use of agents with anticholinergic properties (e.g., antihistamines, antispasmodics, neuroleptics, phenothiazines, skeletal muscle relaxants…15 sources — open the full entry
Potassium CitrateMajorSynergyConcomitant use of agents with anticholinergic properties (e.g., antihistamines, antispasmodics, neuroleptics, phenothiazines, skeletal muscle relaxants…15 sources — open the full entry
Potassium Citrate + Citric AcidMajorSynergyConcomitant use of agents with anticholinergic properties (e.g., antihistamines, antispasmodics, neuroleptics, phenothiazines, skeletal muscle relaxants…15 sources — open the full entry
Sodium Chloride + Potassium Chloride + Sodium AcetateMajorAbsorptionConcomitant use of agents with anticholinergic properties (e.g., antihistamines, antispasmodics, neuroleptics, phenothiazines, skeletal muscle relaxants…15 sources — open the full entry
Tamoxifen CitrateMajorMetabolismChronic coadministration of potent or moderate CYP450 2D6 inhibitors including certain antidepressants may reduce the effectiveness of tamoxifen. The proposed…35 sources — open the full entry
TopiramateMajorSynergyCertain drugs such as carbonic anhydrase inhibitors and drugs with anticholinergic activity (e.g., antihistamines, antispasmodics, neuroleptics…9 sources — open the full entry
ZonisamideMajorSynergyCertain drugs such as carbonic anhydrase inhibitors and drugs with anticholinergic activity (e.g., antihistamines, antispasmodics, neuroleptics…9 sources — open the full entry
Abiraterone AcetateModerateMetabolismCoadministration with abiraterone acetate may increase the plasma concentrations of drugs that are substrates of the CYP450 2D6 isoenzyme. The mechanism is…6 sources — open the full entry
Aclidinium Bromide + Formoterol FumarateModerateSynergyThe potential exists for additive anticholinergic effects such as mydriasis, blurred vision, heat intolerance, fever, dry mouth, tachycardia, urinary…12 sources — open the full entry
Alfuzosin HydrochlorideModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…11 sources — open the full entry
AlprazolamModerateSynergyCentral nervous system- and/or respiratory-depressant effects may be additively or synergistically increased in patients taking multiple drugs that cause these…44 sources — open the full entry
Amantadine HydrochlorideModerateSynergyThe anticholinergic-like adverse effects of amantadine may be potentiated by agents with anticholinergic properties such as antihistamines, antispasmodics…6 sources — open the full entry
Amiodarone HydrochlorideModerateSynergyThe use of higher than recommended dosages of diphenhydramine (e.g., through abuse or misuse) has been associated with serious and potentially fatal cardiac…8 sources — open the full entry
Amitriptyline HydrochlorideModerateSynergyAgents with anticholinergic properties (e.g., sedating antihistamines; antispasmodics; neuroleptics; phenothiazines; skeletal muscle relaxants; tricyclic…19 sources — open the full entry
Amitriptyline Hydrochloride + ChlordiazepoxideModerateSynergyAgents with anticholinergic properties (e.g., sedating antihistamines; antispasmodics; neuroleptics; phenothiazines; skeletal muscle relaxants; tricyclic…2 documented mechanisms63 sources — open the full entry
Amlodipine BesilateModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…7 sources — open the full entry
Amlodipine Besilate + AtenololModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms18 sources — open the full entry
Amlodipine Besilate + AtorvastatinModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…7 sources — open the full entry
Amlodipine Besilate + Benazepril HydrochlorideModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms18 sources — open the full entry
Amlodipine Besilate + Olmesartan MedoxomilModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms18 sources — open the full entry
Amlodipine Besilate + TelmisartanModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms18 sources — open the full entry
Amlodipine Besilate + ValsartanModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms7 sources — open the full entry
AripiprazoleModerateAntagonismCentrally-acting anticholinergic agents may antagonize the therapeutic effects of neuroleptic agents. Although these drugs have been used together clinically…21 sources — open the full entry
Asenapine MaleateModerateAntagonismCentrally-acting anticholinergic agents may antagonize the therapeutic effects of neuroleptic agents. Although these drugs have been used together clinically…21 sources — open the full entry
AtenololModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…11 sources — open the full entry
Atenolol + ChlorthalidoneModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms18 sources — open the full entry
Atomoxetine HydrochlorideModerateMetabolismCoadministration with drugs that are inhibitors of CYP450 2D6 may increase the plasma concentrations of atomoxetine, which is primarily metabolized by the…3 sources — open the full entry
Atropine Sulfate (Injection)ModerateSynergyAgents with anticholinergic properties (e.g., sedating antihistamines; antispasmodics; neuroleptics; phenothiazines; skeletal muscle relaxants; tricyclic…19 sources — open the full entry
Azilsartan MedoxomilModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms18 sources — open the full entry
Azilsartan Medoxomil + ChlorthalidoneModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…3 documented mechanisms18 sources — open the full entry
BaclofenModerateSynergyCentral nervous system- and/or respiratory-depressant effects may be additively or synergistically increased in patients taking multiple drugs that cause these…44 sources — open the full entry
Beclometasone + Formoterol + GlycopyrroniumModerateSynergyAgents with anticholinergic properties (e.g., sedating antihistamines; antispasmodics; neuroleptics; phenothiazines; skeletal muscle relaxants; tricyclic…19 sources — open the full entry
Betaxolol HydrochlorideModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…11 sources — open the full entry
Bimatoprost + TimololModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…11 sources — open the full entry
Bisoprolol FumarateModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…11 sources — open the full entry
Bisoprolol Fumarate + Amlodipine BesilateModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms18 sources — open the full entry
Bisoprolol Fumarate + HydrochlorothiazideModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms18 sources — open the full entry
Brimonidine Tartrate + Timolol MaleateModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…11 sources — open the full entry
Brinzolamide + TimololModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…11 sources — open the full entry
BrivaracetamModerateSynergyCentral nervous system- and/or respiratory-depressant effects may be additively or synergistically increased in patients taking multiple drugs that cause these…44 sources — open the full entry
Bromocriptine MesylateModerateSynergyCentral nervous system- and/or respiratory-depressant effects may be additively or synergistically increased in patients taking multiple drugs that cause these…44 sources — open the full entry
Budesonide + Glycopyrronium Bromide + Formoterol FumarateModerateSynergyAgents with anticholinergic properties (e.g., sedating antihistamines; antispasmodics; neuroleptics; phenothiazines; skeletal muscle relaxants; tricyclic…19 sources — open the full entry
BumetanideModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…11 sources — open the full entry
Bupropion HydrochlorideModerateMetabolismCoadministration with bupropion may increase the plasma concentrations of drugs that are metabolized by CYP450 2D6 (e.g., selective serotonin reuptake…15 sources — open the full entry
Candesartan CilexetilModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…7 sources — open the full entry
Candesartan Cilexetil + HydrochlorothiazideModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…2 documented mechanisms7 sources — open the full entry
CaptoprilModerateSynergyMany psychotherapeutic and CNS-active agents (e.g., anxiolytics, sedatives, hypnotics, antidepressants, antipsychotics, opioids, alcohol, muscle relaxants)…11 sources — open the full entry
CarbamazepineModerateSynergyCentral nervous system- and/or respiratory-depressant effects may be additively or synergistically increased in patients taking multiple drugs that cause these…44 sources — open the full entry
Carbidopa + LevodopaExtended releaseProlonged releaseModerateAbsorptionAnticholinergic agents may decrease the absorption and oral bioavailability of levodopa. The proposed mechanism involves increased gastrointestinal transit…10 sources — open the full entry

Food & lifestyle

Therapeutic duplication

Drug classes that overlap with Guaifenesin + Levomenthol + Diphenhydramine, so taking both doubles up the same effect. This source publishes no per-row citations for duplication.