Comparing Amantadine vs Methylphenidate

For Parkinson's Disease: Started Amantadine 4 weeks ago 200 mg per day. Noticed immediately occasional dizziness and diarrhea after every 100mg capsule, lost any desire to get up and do anything, Midway through the third week, I cut my dosage down to 100 mg capsule per day, taken every evening at 8 pm before bedtime and that helped me sleep better and as well increased movement in arms and right leg and foot. Happy to say I am very pleased with the results!

For Parkinson's Disease: Works to stop Dyskinesia caused by senement/dopamine pills

For ADHD: It works for me but it gives side effects. I can finally focus with 52mg! Still I am impulsive but I don’t get distracted and finally I can get stuff done!!! But it took me weeks to get used to the doses until reaching 52mg, and I still have side effects sometimes (specially if I haven’t sleep good, for some reason). However I am going through a lot of stress and with the meds sometimes I get nausea, palpitations, loss of appetite and I am losing a lot of weight (I’m already very thin). I’ve been two weeks with this dose and side effects are slowly disappearing, but I’m not sure if they will go for good. At least I focus finally, and that’s what I need to finish my masters in neuroscience..

For ADHD: So far is the 3rd day of taking 10MG OF RITALIN IR. So far I feel I can finally get work done, less tapping of the feet and less fidgety, talk a lot more, can start conversations, etc. I can think before I act but sometimes I act out but not as much. But however my hands shake a little. And takes longer to 'kick in' it takes 40 mins to an hour a half. But when it 'kicks in' it lasts up to 4-5 hours. It really does help with my moderate ADHD.