I started out on Isopropylphenidate, and enjoyed it at low functional dosing at work. I would dose 5mg capsules and take a few at work. Great functional Ritalin analog. I have a great patent report of it being studied as a replacement for Ritalin with an improved safety profile, longer duration of action, and less interaction with ethanol.
I was using it until I got a script for Rita, and never looked back lol
Rita plus ethanol is very euphoric and functional for me...zero crash or negative effects. I enjoy Methylphenidate WAY more than Vyvanse (Lisdexamfetamine) which gave me insane dry mouth, trouble sleeping due to looong action, and a few palpitations.
Methylphenidate IR all the way
Isopropylphenidate is a decent alternative. Way less recreational potential, but very functional and gentle (less NE action than MPH). I enjoyed IPH actually for sharpening your mind and energy at work. I also have 4F-MPH which I still never tried. I am content with my Methylphenidate.
MPH = Amazing euphoric stimulant (my DOC + ethanol)
IPH = great functional stimulant (slightly longer lasting & less NE action)
4F-MPH = 3x potency of MPH at dopamine transporter (never tried)
Still have lots of everything ....for a rainy day
