dog epilepsy

hi , i am having a male dog 1.5 yrs old , mixed breed of doberman and LAB. weight 20 kg approx. he was first seziour in 6th aug 2011.thank god it does not occur again . that time i been to local vet in singapore for my dog , all blood test was fine , vet told us must be suffering wdh the epilepsy. it was very scary and painful . so after all test vet has put my dog on the medication named phenobarbitol twice a day per dose 25 mg . i knew that so many side effects , so i contacted wdh the homopathic med. he told me u gave him a one time PB and eveing put him on valerine roots capsule. ok that i have done , he was seems ok ... now after one mnth he has given me complete kit of homopathic med .IG amara i have given 200 1 dose - 10 drops on tongue .. that i have done IG course. now a days i am giving him a S/L -10 drops morning and eve and one more ACO 200 in morning 10 drops before meals , he is saying give ths med for one week and draw the phenobaritol that i am giving arnd 15 mg in morning. is it ok to with draw PB completly or start ths med. i am afaraid , i can not see my pucchi in that painful situation ... please help me put for further discussion .... thanks a lot