That sounds more like side effects. Possibly a drug interaction? Don't forget to mention it to the Dr.!
I would start looking around on drugs.com. You'll find better information about interactions there than from your Dr. or pharmacist.
Who knew that my migraines and fatigue were a result of Lamictal + Benadryl! It wasn't in the pharmacy info, so I never thought of it. Thankfully, Loratadine is OK with Lamictal.