"triazolam (halcion) is great. in 10 years of use i have never built up tolerance to it but only use it when required. upon average 5 nights a week. i break my 0.25mg in half and make sure that i am relaxed as possible when taking it. there appears, for me anyhow, to be a threshold of about 15 to 30 mins after taking it where if you get involved in stressful activity its effectiveness is reduced dramatically. best used in conjunction with relaxation techniques."