Q: about Focalin XR

[doolishis]

Whenever SWIM snorts some dexmethylphenidate, his whole body feels numb. His face, arms, and legs all get a kind of tingly feeling (lasts about 1 hour) and whenever he stands up quickly he gets kind of light-headed and his vision gets somewhat grey (effect lessens over 1hr). He has an inhalor for his asthma, but since it eventually goes away, he never needs to use it. ALSO, he types much slower and in general, becomes slower-it takes longer for him to respond to things verbally. He also becomes very clumsy, and as a result of such, is forced to move slower.

He's done ritalin 4 times and gotten the same effects. This was his first time with dexmethylphenidate. He makes sure he drinks plenty of water. He's wondering if this has to do with high blood pressure though. He thinks he may need to get tested for hypertension. It doesn't happen intensely enough to worry him, but he's curious: is this normal? Anyone ever gotten similar effects?

Please excuse the blabbering, he's still a bit high from his initial hit (40mg) 2 hours ago plus another (20mg) about 30 mins ago. Idiotic btw SWIM should've done that dose the other way around.

Also, he's wondering: Does the fact that it's *-XR affect the absorption, even when snorted?