I stuttered for most of my life. I read an article that fish oil can help. So I tried 1 capsule a day and I saw some improvement. So then I tried 2 capsules a day and I saw increased improvement. So I tried 3 capsules a day and got worse. So I went back to 2 capsules a day. I have been taking 2 capsules a day for about 15 years. It is not perfect and I stutter at times. I take 1 capsule in the morning and 1 capsule later in the day.