It would honestly be easier to get a half gram of meth for $45 from Xinhai than fuck around with speed paste. Now would it be reasonable at all to eat say 10-20 mg meth orally in a capsule as an alternative to the effects you're looking for from amphetamine? I specifically would avoid smoking/snorting it to keep out some of the more euophoriant/recreational effects. I'm sure this probably sounds like a stupid idea and an easy way to get addicted to something that is hard to fuck around with but just wanted some thoughts
You're playing with fire, but it's been done successfully before. Consider your past behavior and experiences with hard drugs; it's completely up to you how this turns out. Like I said, it's been done as you can see from old posts on this sub, but as you know if you don't live under a rock you could destroy yourself doing it. From your post you don't seem that experienced with stims, so I'd say you should maybe save this for when you absolutely cannot use speed paste instead. That being said, don't go buying the halogenated amphetamine RCs as a safe alternative. Try the Indian pharma websites maybe? If you have no criminal record and decent insurance getting a script isn't that hard (though I personally understand those conditions can be hard to meet). And then here I am typing all this on concerta. You know what you're doing man, this is like asking about trying heroin. Only time will tell how you handle it.