I wasn't very old back in the day when we had to deal with such problems. But when I was 8 or 9, I remember we had a husky who was on heavy medication due to the seizures she had... All I remember is... Sometimes, when she had seizures, she got VERY VICIOUS. So it may be wise, has much as instinct is to comfort the dog, so stay clear of them while they are having a seizure.
I've only had experience with 1 dog that had seizured, so my opinion could be VERY far off... Most dogs might not get mean. But it is something you may want to tell your friend, just incase she does have to deal with one of hose cases of horrible aggression.
Our husky has killed animals and caused family members hospital visits when she was having seizures. Luckily, they did not occur often enough that we needed to euthenize her due to the danger. We just all learned a 'procedure' to keep us and herself safe.
Good luck
Katy
**edit** Also might want to mention, the aggression did not start until she was 14 or so, though she had been having seizures since she was a puppy. She died around age 17 (VERY old for a large dog methinks) when we finally had to have her euthenized due to crippling arthritis.
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