Phentermine Interactions
Showing entire list of all interactions, including brand names and combination drugs.
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Medications known to interact with phentermine
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- E-Caff P-B (belladonna / caffeine / ergotamine / pentobarbital)
- Echotuss-HC (chlorpheniramine / hydrocodone / phenylephrine)
- Ed A-Hist (chlorpheniramine / phenylephrine)
- Ed A-Hist DM (chlorpheniramine / dextromethorphan / phenylephrine)
- Ed A-Hist LA (chlorpheniramine / phenylephrine)
- Ed A-Hist PSE (pseudoephedrine / triprolidine)
- ED Bron GP (guaifenesin / phenylephrine)
- Ed ChlorPed D (chlorpheniramine / phenylephrine)
- ED DM (chlorpheniramine / dextromethorphan / phenylephrine)
- Ed-Bron G (guaifenesin / theophylline)
- Ed-TLC (chlorpheniramine / hydrocodone / phenylephrine)
- Ed-Tuss HC (chlorpheniramine / hydrocodone / phenylephrine)
- Efasin (guaifenesin / phenylephrine)
- Efasin Expectorant SF (codeine / guaifenesin / phenylpropanolamine)
- Efasin-HD (chlorpheniramine / hydrocodone / phenylephrine)
- Efasin-HD Plus (chlorpheniramine / hydrocodone / phenylephrine)
- Effective Strength Cough Syrup (chlorpheniramine / dextromethorphan)
- Effervescent Cold Relief (aspirin / chlorpheniramine / phenylephrine)
- Effexor (venlafaxine)
- Effexor XR (venlafaxine)
- Efidac (pseudoephedrine)
- Elavil (amitriptyline)
- Eldepryl (selegiline)
- eletriptan
- Elixophyllin (theophylline)
- Elixophyllin GG (guaifenesin / theophylline)
- Elixophyllin KI (potassium iodide / theophylline)
- ElixSure Congestion (pseudoephedrine)
- ElixSure Cough (dextromethorphan)
- Elixsure Decongestant (pseudoephedrine)
- Eltroxin (levothyroxine)
- Emagrin (aspirin / caffeine / salicylamide)
- Emagrin Forte (acetaminophen / guaifenesin / phenylephrine)
- Emagrin Forte (old formulation) (acetaminophen / caffeine / guaifenesin / phenylephrine)
- Emerphed (ephedrine)
- empagliflozin
- empagliflozin / linagliptin
- empagliflozin / linagliptin / metformin
- empagliflozin / metformin
- Empro (phenylpropanolamine)
- Emsam (selegiline)
- EndaCof Drops (chlorpheniramine / dextromethorphan / phenylephrine)
- Endacof HC (brompheniramine / hydrocodone / pseudoephedrine)
- EndaCof PD Drops (brompheniramine / dextromethorphan / pseudoephedrine)
- EndaCof-DC (codeine / pseudoephedrine)
- EndaCof-DH (brompheniramine / dihydrocodeine / phenylephrine)
- EndaCof-DM (brompheniramine / dextromethorphan / phenylephrine)
- EndaCof-PD (brompheniramine / dextromethorphan / guaifenesin / phenylephrine)
- EndaCof-Plus (dexchlorpheniramine / hydrocodone / phenylephrine)
- Endacon (dextromethorphan / guaifenesin / phenylephrine)
- Endacon DM (dextromethorphan / guaifenesin / phenylephrine)
- Endafed (brompheniramine / pseudoephedrine)
- Endagen-HD (chlorpheniramine / hydrocodone / phenylephrine)
- Endal (guaifenesin / phenylephrine)
- Endal CD (chlorpheniramine / codeine / phenylephrine)
- Endal CD (old formulation) (codeine / diphenhydramine / phenylephrine)
- Endal Expectorant (codeine / guaifenesin / phenylpropanolamine)
- Endal HD (diphenhydramine / hydrocodone / phenylephrine)
- Endal Liquid (dextromethorphan / triprolidine)
- Endal-HD Plus (chlorpheniramine / hydrocodone / phenylephrine)
- Endep (amitriptyline)
- Enditussin Expectorant (codeine / guaifenesin / phenylpropanolamine)
- Endolor (acetaminophen / butalbital / caffeine)
- Endotuss Expectorant (codeine / guaifenesin / phenylpropanolamine)
- Endotuss-HD (chlorpheniramine / hydrocodone / phenylephrine)
- Enduronyl (deserpidine / methyclothiazide)
- Enduronyl Forte (deserpidine / methyclothiazide)
- Enerjets (caffeine)
- Enomine (guaifenesin / phenylephrine / phenylpropanolamine)
- Enomine LA (guaifenesin / phenylpropanolamine)
- Enplus-HD (chlorpheniramine / hydrocodone / phenylephrine)
- ENT (brompheniramine / phenylpropanolamine)
- Entac (guaifenesin / phenylephrine / phenylpropanolamine)
- Entex (pseudoephedrine)
- Entex ER (guaifenesin / phenylephrine)
- Entex HC (guaifenesin / hydrocodone / pseudoephedrine)
- Entex LA (guaifenesin / phenylephrine)
- Entex LQ (guaifenesin / phenylephrine)
- Entex Pac (dextromethorphan / guaifenesin / pseudoephedrine)
- Entex PSE (guaifenesin / pseudoephedrine)
- Entex T (guaifenesin / pseudoephedrine)
- Entre-B (brompheniramine / phenylephrine)
- Entre-Cough (dextromethorphan / guaifenesin / pseudoephedrine)
- Entre-S (chlorpheniramine / dextromethorphan / pseudoephedrine)
- Entuss-D (guaifenesin / hydrocodone / pseudoephedrine)
- Entuss-D JR (guaifenesin / hydrocodone / pseudoephedrine)
- Entuss-D Liquid (hydrocodone / pseudoephedrine)
- Ephed Plus (acetaminophen / pseudoephedrine)
- ephedrine
- ephedrine / guaifenesin
- ephedrine / guaifenesin / theophylline
- ephedrine / hydroxyzine / theophylline
- ephedrine / phenobarbital / potassium iodide / theophylline
- ephedrine / phenobarbital / theophylline
- ephedrine / potassium iodide
- Ephensin-LA (guaifenesin / phenylpropanolamine)
- Epi EZ Pen (epinephrine)
- Epidrin (acetaminophen / dichloralphenazone / isometheptene mucate)
- epinephrine
- epinephrine / etidocaine
- epinephrine / lidocaine
- epinephrine / prilocaine
- EpiPen (epinephrine)
- EpiPen 2-Pak (epinephrine)
- EpiPen Auto-Injector (epinephrine)
- EpiPen Jr (epinephrine)
- EpiPen JR 2-Pak (epinephrine)
- EpiPen JR Auto-Injector (epinephrine)
- EPIsnap (epinephrine)
- Eprontia (topiramate)
- Equate Allergy & Sinus Headache (acetaminophen / diphenhydramine / phenylephrine)
- Equi-Nade (chlorpheniramine / phenylpropanolamine)
- Equi-Tex (guaifenesin / phenylephrine / phenylpropanolamine)
- Equibron G (guaifenesin / theophylline)
- Equitan Pediatric (chlorpheniramine / phenylephrine / pyrilamine)
- Ercaf (caffeine / ergotamine)
- Ergocaf-PB (belladonna / caffeine / ergotamine / pentobarbital)
- ErgocaffPB (belladonna / caffeine / ergotamine / pentobarbital)
- Ergocomp-PB (belladonna / caffeine / ergotamine / pentobarbital)
- Ermeza (levothyroxine)
- ertugliflozin
- ertugliflozin / metformin
- ertugliflozin / sitagliptin
- escitalopram
- Esgic (acetaminophen / butalbital / caffeine)
- Esgic-Plus (acetaminophen / butalbital / caffeine)
- Esimil (guanethidine / hydrochlorothiazide)
- Eskalith (lithium)
- Eskalith-CR (lithium)
- esketamine
- Esocor P (chlorpheniramine / dextromethorphan / pseudoephedrine)
- ethanol
- Ethyl Alcohol (ethanol)
- Etrafon (amitriptyline / perphenazine)
- Etrafon Forte (amitriptyline / perphenazine)
- Eudal SR (guaifenesin / pseudoephedrine)
- Euthyrox (levothyroxine)
- Eutroxsig (levothyroxine)
- evening primrose
- Evening Primrose Oil (evening primrose)
- Evotrox (levothyroxine)
- Ex-Dec-TR (carbinoxamine / pseudoephedrine)
- Ex-Histine (chlorpheniramine / methscopolamine / phenylephrine)
- Ex-Tuss (atropine / chlorpheniramine / hyoscyamine / phenylephrine / phenylpropanolamine / scopolamine)
- Exall-D (carbetapentane / guaifenesin / pseudoephedrine)
- Exaprin (acetaminophen / aspirin / caffeine / salicylamide)
- Excedrin (acetaminophen / aspirin / caffeine)
- Excedrin Extra Strength (acetaminophen / aspirin / caffeine)
- Excedrin Menstrual Complete (acetaminophen / aspirin / caffeine)
- Excedrin Migraine (acetaminophen / aspirin / caffeine)
- Excedrin Mild Headache (acetaminophen / caffeine)
- Excedrin Quick Tab (acetaminophen / caffeine)
- Excedrin Sinus Headache (acetaminophen / phenylephrine)
- Excedrin Tension Headache (acetaminophen / caffeine)
- Excof (carbinoxamine / hydrocodone / phenylephrine)
- Excof-SF (carbinoxamine / hydrocodone / phenylephrine)
- ExeClear-DM (dextromethorphan / guaifenesin / pseudoephedrine)
- Execof ER (dextromethorphan / guaifenesin / phenylephrine)
- ExeFen (guaifenesin / pseudoephedrine)
- ExeFen-DM (dextromethorphan / guaifenesin)
- ExeFen-DMX (dextromethorphan / guaifenesin / pseudoephedrine)
- ExeFen-IR (guaifenesin / pseudoephedrine)
- exenatide
- ExeTuss (guaifenesin / phenylephrine)
- ExeTuss-DM (dextromethorphan / guaifenesin / phenylephrine)
- ExeTuss-GP (guaifenesin / phenylephrine)
- Exetuss-HC (guaifenesin / hydrocodone / phenylephrine)
- Exgest LA (guaifenesin / phenylpropanolamine)
- Exo-Tuss (chlorpheniramine / hydrocodone / phenylephrine)
- Exratuss (carbetapentane / chlorpheniramine / phenylephrine)
- Extendryl (dexchlorpheniramine / methscopolamine / phenylephrine)
- Extendryl Chews (chlorpheniramine / methscopolamine / phenylephrine)
- Extendryl DM (chlorpheniramine / dextromethorphan / methscopolamine)
- Extendryl G (guaifenesin / phenylephrine)
- Extendryl GCP (carbetapentane / guaifenesin / phenylephrine)
- Extendryl JR (chlorpheniramine / methscopolamine / phenylephrine)
- Extendryl PEM (methscopolamine / phenylephrine)
- Extendryl PSE (methscopolamine / pseudoephedrine)
- Extendryl Seniors (chlorpheniramine / methscopolamine / phenylephrine)
- Extendryl SR (chlorpheniramine / methscopolamine / phenylephrine)
- Extra Pain Relief (acetaminophen / aspirin / caffeine)
- Extuss LA (dextromethorphan / guaifenesin)
- Exubera (insulin inhalation, rapid acting)
- Exxua (gepirone)
- Ezol (acetaminophen / butalbital / caffeine)
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Drug Interaction Classification
| Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit. | |
| Moderately clinically significant. Usually avoid combinations; use it only under special circumstances. | |
| 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. | |
| No interaction information available. |
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.