The risk or severity of adverse effects can be increased when Gabapentin is combined with Benperidol. The risk or severity of adverse effects can be increased when Gabapentin is combined with Tiagabine. The risk or severity of adverse effects can be increased when Miconazole is combined with Gabapentin. The therapeutic efficacy of Gabapentin can be decreased when used in combination with Calcium Citrate. The risk or severity of adverse effects can be increased when Gabapentin is combined with Oxethazaine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Cocaine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Desvenlafaxine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Duloxetine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Levetiracetam. The risk or severity of adverse effects can be increased when Gabapentin is combined with Chlorphenamine. The risk or severity of adverse effects can be increased when Sulconazole is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Dimenhydrinate. The risk or severity of adverse effects can be increased when Posaconazole is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Flibanserin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Ritanserin. Magnesium salicylate may increase the central nervous system depressant (CNS depressant) activities of Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Mepivacaine. The risk or severity of adverse effects can be increased when Temazepam is combined with Gabapentin. Gabapentin may increase the hypotensive activities of Nitroprusside. The risk or severity of adverse effects can be increased when Mevastatin is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Ubidecarenone. The risk or severity of adverse effects can be increased when Capric acid is combined with Gabapentin. Minocycline may increase the central nervous system depressant (CNS depressant) activities of Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Tizanidine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Alfaxalone. The risk or severity of adverse effects can be increased when Alfentanil is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Zonisamide. The risk or severity of adverse effects can be increased when Gabapentin is combined with Ecopipam. The risk or severity of adverse effects can be increased when Gabapentin is combined with Fluspirilene. The therapeutic efficacy of Gabapentin can be decreased when used in combination with Calcium lactate. The risk or severity of adverse effects can be increased when Gabapentin is combined with Flunarizine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Lamotrigine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Lormetazepam. The risk or severity of adverse effects can be increased when Gabapentin is combined with Ketamine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Oxymorphone. The risk or severity of adverse effects can be increased when Gabapentin is combined with Brotizolam. The risk or severity of adverse effects can be increased when Gabapentin is combined with Methylecgonine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Melatonin. The metabolism of Gabapentin can be decreased when combined with Clarithromycin. The risk or severity of adverse effects can be increased when Econazole is combined with Gabapentin. The risk or severity of adverse effects can be increased when Butenafine is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Ramelteon. Doxylamine may increase the central nervous system depressant (CNS depressant) activities of Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Chloroprocaine. The metabolism of Gabapentin can be increased when combined with Barbexaclone. The risk or severity of adverse effects can be increased when Voriconazole is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Ethchlorvynol. The risk or severity of adverse effects can be increased when Gabapentin is combined with Escitalopram. The risk or severity of adverse effects can be increased when Tioconazole is combined with Gabapentin. The risk or severity of adverse effects can be increased when Nikkomycin Z is combined with Gabapentin. The risk or severity of adverse effects can be increased when Methohexital is combined with Gabapentin. The therapeutic efficacy of Gabapentin can be decreased when used in combination with Calcium Phosphate. The risk or severity of adverse effects can be increased when Gabapentin is combined with Vigabatrin. Gabapentin may increase the central nervous system depressant (CNS depressant) activities of Methotrimeprazine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Tetrabenazine. Magnesium oxide may increase the central nervous system depressant (CNS depressant) activities of Gabapentin. Dronabinol may increase the central nervous system depressant (CNS depressant) activities of Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Pizotifen. The risk or severity of adverse effects can be increased when Gabapentin is combined with Prazepam. The risk or severity of adverse effects can be increased when Gabapentin is combined with Barbital. The risk or severity of adverse effects can be increased when Gabapentin is combined with Ezogabine. Trimazosin may increase the hypotensive activities of Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Adipiplon. The risk or severity of adverse effects can be increased when Gabapentin is combined with Zopiclone. The risk or severity of adverse effects can be increased when Gabapentin is combined with Benzyl alcohol. The serum concentration of Phenytoin can be increased when it is combined with Gabapentin. The risk or severity of adverse effects can be increased when Sufentanil is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Nefazodone. The risk or severity of adverse effects can be increased when Tolnaftate is combined with Gabapentin. The metabolism of Gabapentin can be decreased when combined with Telithromycin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Mesoridazine. Prazosin may increase the hypotensive activities of Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Trichloroethylene. The risk or severity of adverse effects can be increased when Gabapentin is combined with Methadyl Acetate. The risk or severity of adverse effects can be increased when Gabapentin is combined with Cerivastatin. The serum concentration of Gabapentin can be decreased when it is combined with Rifampicin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Amitriptyline. The risk or severity of adverse effects can be increased when Gabapentin is combined with Paroxetine. The risk or severity of adverse effects can be increased when Codeine is combined with Gabapentin. The risk or severity of adverse effects can be increased when Sertaconazole is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Bromperidol. The risk or severity of adverse effects can be increased when Gabapentin is combined with Phenoxyethanol. The risk or severity of adverse effects can be increased when Gabapentin is combined with Sulpiride. The risk or severity of adverse effects can be increased when Levorphanol is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Maprotiline. The risk or severity of adverse effects can be increased when Cyclobenzaprine is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Cyclizine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Simvastatin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Halazepam. The risk or severity of adverse effects can be increased when Gabapentin is combined with Etomidate. The risk or severity of adverse effects can be increased when Gabapentin is combined with Butalbital. The risk or severity of adverse effects can be increased when Gabapentin is combined with Alphaprodine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Perospirone. The risk or severity of adverse effects can be increased when Gabapentin is combined with Etifoxine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Atorvastatin. The risk or severity of adverse effects can be increased when 2-HYDROXY-1,4-NAPHTHOQUINONE is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Asenapine. The risk or severity of adverse effects can be increased when Clorazepate is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Quetiapine. The risk or severity of adverse effects can be increased when Efinaconazole is combined with Gabapentin. Gabapentin may increase the central nervous system depressant (CNS depressant) activities of Azelastine. Hydroxyzine may increase the central nervous system depressant (CNS depressant) activities of Gabapentin. The risk or severity of adverse effects can be increased when Artemether is combined with Gabapentin. The risk or severity of adverse effects can be increased when Bifonazole is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Valproic Acid. The risk or severity of adverse effects can be increased when Gabapentin is combined with Trans-2-Phenylcyclopropylamine. The risk or severity of adverse effects can be increased when Benzoic Acid is combined with Gabapentin. Gabapentin may increase the central nervous system depressant (CNS depressant) activities of Zolpidem. The risk or severity of adverse effects can be increased when Tavaborole is combined with Gabapentin. The risk or severity of adverse effects can be increased when Anidulafungin is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Chloral hydrate. The risk or severity of adverse effects can be increased when Lorazepam is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Oxybuprocaine. The risk or severity of adverse effects can be increased when Isoconazole is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Ecgonine. The risk or severity of adverse effects can be increased when Gabapentin is combined with Bupivacaine. The therapeutic efficacy of Gabapentin can be decreased when used in combination with Calcium gluconate. The therapeutic efficacy of Gabapentin can be decreased when used in combination with Casein. The risk or severity of adverse effects can be increased when Gabapentin is combined with Levodopa. The metabolism of Gabapentin can be increased when combined with Nafcillin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Topiramate. The risk or severity of adverse effects can be increased when Alprazolam is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Opium. The risk or severity of adverse effects can be increased when Gabapentin is combined with Molindone. Gabapentin may increase the central nervous system depressant (CNS depressant) activities of Buprenorphine. Sodium oxybate may increase the central nervous system depressant (CNS depressant) activities of Gabapentin. The risk or severity of adverse effects can be increased when Secobarbital is combined with Gabapentin. The risk or severity of adverse effects can be increased when Gabapentin is combined with Acepromazine. The serum concentration of Gabapentin can be decreased when it is combined with Magaldrate. The risk or severity of adverse effects can be increased when Gabapentin is combined with Glutethimide.