Allopurinol Interactions
Showing entire list of all interactions, including brand names and combination drugs.
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Medications known to interact with allopurinol
O
- Obredon (guaifenesin / hydrocodone)
- Octocaine 100 (epinephrine / lidocaine)
- Oforta (fludarabine)
- olanzapine
- olanzapine / samidorphan
- Oleptro (trazodone)
- oliceridine
- Olinvyk (oliceridine)
- olopatadine nasal
- Omeclamox-Pak (amoxicillin / clarithromycin / omeprazole)
- Omnihist II LA (chlorpheniramine / methscopolamine / phenylephrine)
- Omnihist L.A. (chlorpheniramine / methscopolamine / phenylephrine)
- Omnipen (ampicillin)
- Omnipen-N (ampicillin)
- OMS (morphine)
- Oncaspar (pegaspargase)
- Oncovin (vincristine)
- Onfi (clobazam)
- Ongentys (opicapone)
- Onivyde (irinotecan liposomal)
- Onset Forte (acetaminophen / chlorpheniramine / phenylephrine)
- Onsolis (fentanyl)
- Ontak (denileukin diftitox)
- Onureg (azacitidine)
- Onxol (paclitaxel)
- Onyda XR (clonidine)
- Opana (oxymorphone)
- Opana ER (oxymorphone)
- opicapone
- opium
- Opium Deodorized (opium)
- Opium Tincture, Deodorized (opium)
- Optimine (azatadine)
- Or-Phen-Ade (chlorpheniramine / phenylpropanolamine)
- Oramorph SR (morphine)
- Orap (pimozide)
- Oratuss (carbetapentane / guaifenesin)
- Oratuss 12 (carbetapentane / guaifenesin / phenylephrine)
- Orbivan (acetaminophen / butalbital / caffeine)
- Orbivan CF (acetaminophen / butalbital)
- Ordrine (chlorpheniramine / phenylpropanolamine)
- Oretic (hydrochlorothiazide)
- Oreticyl 25 (deserpidine / hydrochlorothiazide)
- Oreticyl 50 (deserpidine / hydrochlorothiazide)
- Oreticyl Forte (deserpidine / hydrochlorothiazide)
- Orfro (orphenadrine)
- Orlaam (levomethadyl acetate)
- Orlenta (chlorpheniramine / pseudoephedrine)
- Ormazine (chlorpromazine)
- Ornade Spansules (chlorpheniramine / phenylpropanolamine)
- orphenadrine
- Orphenate (orphenadrine)
- Orphengesic (aspirin / caffeine / orphenadrine)
- Orphengesic Forte (aspirin / caffeine / orphenadrine)
- Oscimin (hyoscyamine)
- Otis Clapp Back Quell (acetaminophen / magnesium salicylate)
- Otrexup (methotrexate)
- oxaliplatin
- Oxaydo (oxycodone)
- oxazepam
- oxcarbazepine
- Oxecta (oxycodone)
- Oxtellar XR (oxcarbazepine)
- oxtriphylline
- oxybutynin
- Oxycet (acetaminophen / oxycodone)
- oxycodone
- OxyContin (oxycodone)
- Oxydose (oxycodone)
- Oxyfast (oxycodone)
- OxyIR (oxycodone)
- oxymorphone
- Oxytrol (oxybutynin)
- Oxytrol for Women (oxybutynin)
- Ozobax (baclofen)
- Ozobax DS (baclofen)
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Related treatment guides
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.