Oxcarbazepine is an inducer of CYP3A4. A lot of drugs metabolised through CYP3A4 (they're called CYP3A4 Substrate). Some almost totally, others let's say 50%, and others less (maybe 5%, etc.). Now there are some drugs that are CYP3A4 Inhibitors, and some that are CYP3A4 Inducer.
The inhibitor, when it's taken with a CYP3A4 Substrate, it raises the substrate's level in the plasma, we can say that it's like you take more of the substrate drug..and the inducer it's the opposite, it it's like it makes the substate drug weaker, it lowers the drug's level in the plasma..
As an example, you take 4 pills of a CYP3A4 Substate drug, with oxcarbazepine, and it's like you took 3 pills of this drug..Well, this is a very simple explanation, but if you google for CYP3A4, you'll understand everything..
this
http://www.pharmacologyweekly.com/content/pages/medications-herbs-cytochrome-p450-cyp-enzyme-inhibitors will make the things easy, i think..when you're in, click for CYP3A4 Inducers...
MartinFn
*edit*As i see in the tables in the link above,oxcarbazepine is a CYP3A4 Inducer, and ketamine is CYP3A4 Substrate, so in theory, trileptal would lower the ketamine's plasma level, and would make the ket "weaker"..but actually it doesn't..(cause oxcarbazepine isn't a strong inducer). I was taking trileptal, at dose 3x300mg, together with a drug that was almost totally metabolised through CYP3A4, and it didn't affect it at all..so...but fuckin anyway, you can always check for drug's interaction here
http://http://www.drugs.com/drug_interactions.php. Be safe and have a great time my friend..
