Children affected by ADHD spouse's anger

My husband was diagnosed with ADHD about a month ago. He finally saw a therapist who determined this when I threatened to leave after being fed up with all of his anger and child like behavior. I have a 10 year old boy and 13 year old girl. Both kids dislike being around him, but my daughter really hates him. She has cut herself in the past and had low self esteem. I believe it stems from his anger toward her and lack of being a loving a father. It's taken a toll on all of us. Now that he finally diagnosed he will soon bee prescribed medication, but I feel torn. Should I leave to give my children a healthier household or stick it out to see if the medication improves things.