<<Disclaimer: Verify this information before applying it to your situation.>> Regarding Judy's post: My understanding is that nobody really knows the truth about melatonin's relationship to auto-immune disease. The research simply hasn't been done yet. The best anybody, including health professionals, can do is make educated guesses; thus the differing responses to your question. See "Melatonin" by Russel Reiter and Jo Robinson (published by Bantam) for a good discussion of the issue. Jo Robinson is the one who started the melatonin "craze" by her compilation and analysis of the existing melatonin research. Sherill Roberts McMinnville, Oregon