they are more shaped like the D, and have a 10 on the other side
The pill is 10 mg
Focalin (dexmethylphenidate), a drug used to treat ADHD.
More info, including an image of the "D" side, is at
http://www.pdrhealth.com/drug_info/r.../foc1610.shtml
I'm not a pharmacist or a medical doctor. This message is not medical advice nor is it an offer to provide medical advice. All drug identifications should be validated by a licensed MD or pharmacist.