專思達利用滲透壓以控制哌甲酯的釋放速度。這項系統以傳統錠劑為外形，由含有快速釋放型藥物為外衣的半滲透膜包覆著滲透性的活性三層內核所組成。The active component in Ritalin and Ritalin LA is methylphenidate. (An active ingredient is what would make a drug do the job.) Ritalin belongs to
The cost of a Paris metro pass or year ticket differs in accordance with the zones wherein you want to journey. But what do these zones correspond to, and which pass must you end up picking according to the place you're going? We describe.Invisible on the naked eye, but with the proper tools, this asteroid is not going to full a full orbit close to