"i have primarily inattentive adhd and recently was diagnosed at 39 years old. i was on amphetamine salts ir 10 mg 2x&#039;s a day as needed at 1st, which worked ok, but gave me some side effects i didn&#039;t appreciate, such as peeing so much it kept me awake at night. also it worked inconsistently per day and sometimes per hour. it gave me blurred vision. so i was switched to 20 mg amphetamine salts xr which is much easier on my system. i don&#039;t have the urinary issues and it works a bit more consistently, though i don&#039;t get the &quot;zeroed in&quot; focus that i got with the ir and i still get some blurred vision, but no issues that cause it. also, with both i have mildly decreased appetite, which is fine since i&#039;m overweight and also a very dry mouth."