"i started taking 10mg of amitriptyline in december of 2015 when i was diagnosed with interstitial cystitis. it takes away the constant sharp burning pain i was having along with the constant urge to urinate. once in a while i will have a flare up of symptoms but even then my pain is very minimal. the only side effects i&#039;ve noticed are that it makes me drowsy in the first few hours of taking my dose. the first month or two of taking i would experience extremely vivid nightmares, but those have subsided to simply being vivid dreams some of the time. i&#039;ve also noticed that if i forget to take it one night i have difficulty falling asleep, and some anxiety similar to the feeling of drinking a little too much coffee, which is tolerable."