rpgdancer,
Ok, so he's probably giving you a low dose naltrexone since he said it was 1/10th the dosage. Normal naltrexone dosage could be 50mg, so 1/10th dosage would be 5mg.
Most people who take LDN, take it at bed time. It seems that when it's most effective, because of the way it operates. There is no insomnia with it, yes there are vivid dreams.
Maybe you should ask him if you could try taking it at bedtime 10pm to 12pm to see if it might be more effective for you,no?