Sorry to be a buzzkill, but there is no definitive answer to who-is-the-most-reactive-element-amongst-all, because it takes two to tango. One could ask which element is the most reactive with Sodium? The answer then is Fluorine, not Caesium. Or, perhaps you want to know which element is the most reactive with Nitrogen. Its Lithium! Shocker!
1 Day 1: reduce dosage of amitriptyline to 75 mg/day. 2  Day 8: reduce dosage of amitriptyline to 50 mg/day. 3  Day 15: reduce dosage of amitriptyline to 25 mg/day. 4  Day 22: reduce dosage of amitriptyline to 10 mg/day. Day 8: reduce dosage of amitriptyline to 50 mg/day. 2  Day 15: reduce dosage of amitriptyline to 25 mg/day. 3  Day 22: reduce dosage of amitriptyline to 10 mg/day. 4  Day 29: stop administration of amitriptyline.
Amitriptyline was approved by the FDA in May 1983. PRESCRIBED FOR: Amitriptyline is used to elevate the mood of patients with depression. It is also used off-label (non-FDA-approved) for treating postherpetic neuralgia, attention deficit hyperactivity disorder (ADHD), migraine headache, and eating disorders.SIDE EFFECTS: Sometimes troublesome side effects include:RESCRIBED FOR: Amitriptyline is used to elevate the mood of patients with depression. It is also used off-label (non-FDA-approved) for treating postherpetic neuralgia, attention deficit hyperactivity disorder (ADHD), migraine headache, and eating disorders. SIDE EFFECTS: Sometimes troublesome side effects include: