VITAMINS suggested by our Neurologist...

Can I ask what brand these products are?  I have tried so many different brands for my son.  I am finding out he has such a fast metabolism that the vitamins increase it even more which metabolizes his medicine in his system too fast.  Yesterday I started him on B12 and this morning he had a terrible seizure at the time of his morning dose of medicine.  I have eliminated anything that contains herbs in the formulas but its hard to find plain multi vitamins.  Ready to give up on vitamins but I know he needs supplementation.  We switched to a new neurologist and need to get his thoughts on supplements.  Our old neurologist said he can take them but there is always an issue after we start taking them.

My neurologist doesn't want to talk about the notion of using vitamins as supplements for the medication I take for my seizures, so I go out on my own. Back in the 80's I read a book about epilepsy and the doctor mentioned using Vitamin B6 and Magnesium although they were primarily successful when used by children. I was about 30 but thought I'd try anyway. The guy at the store said taking B-complex at the same time would help break up and dissolve the B6 so it would get into my system better. After taking them for about a year or two I was able to drop the dilantin I was taking. After a couple medicine-changes later I basically stopped using them.However, now, having gone 13 years seizure-free after a lumpectomy surgical procedureI in 2005, they have started up again. So I thought I would start the vitamins and minerals again. Now I take B6 100mg, B-complex, Magnesium 400mg, Calcium 1000mg, Zinc 15mg, and Manganese 50mg.My only problem is that the Calcium and Magnesium say I should take 3 a day. I assume that's for people who have low calcium or magnesium levels but I'm not sure if I need a similar dosage for seizures. If it can affect medication, the seizures medication I currently take are Lamotrigine150mg 2X daily; Fycompa 10mg 1X daily; Zonisimide 100mg 5X daily and Vimpat 200mg 2X daily.If anyone can help or has knowledge about the specifics of the dosages or the effects on my current meds - if any, I would greatly appreciate it. Thanks in advance.