My own experience with these drugs. Not seroquil, but klonopin and the SSRI's. They are very difficult to get off of. You need the Ashton Manual or some guidance by a physician--particularly an orthomolecular physician who will prescribe nutrients rather than drugs that will heal the brain and nervous system.
Read Joan Gadsby's book: "Addiction By Prescription".
The drug klonopin will cause protracted withdrawal symptoms for years after you get off it, if your body is very toxic when you go on it. It gets into the brain and spinal cord and bones. It destroys the digestive tract, destroys the parasympathetic influence of the vagus nerve to the heart--all organs--no organ is spared, nerves and vascular system is affected.
If you have anxiety attacks, it's probably bug ammonia over stimulating the adrenals or systemic candida. Drugs are NOT the answer. Get the bugs killed off and get the body cleaned out of the poisons.
The drugs with fluoride in them cause tendon and ligament damage. I've already stated that the benzo drugs destroy the parasympathetic infulence to the heart. The drugs have to be detoxed out of the brain and spinal cord. A lot of it happens with the last stage of this program or tissue detox.
Save yourself many years of suffering or even early death. If you're on them, get off them and do a body clean-up. The body needs nutrients to heal with in order to restore "normal". Not drugs.