The percentage of those of Hispanic origin in the United States who were of Mexican background in 2013. Another 9.5 percent were of Puerto Rican background, 3.7 percent Cuban, 3.7 percent Salvadoran, 3.3 percent Dominican and 2.4 percent Guatemalan.
Onset of effects occurs within 30-60 minutes after taking Concerta. After that, duration of action lasts from 8-12 hours. And the average times to reach peak plasma concentrations across all doses of Concerta occur between 6-10 hour s. The average half-life for Concerta in adults is about 3.5 hours.
To make sure Concerta is safe for you, tell your doctor if you or anyone in your family has ever had: 1  depression, mental illness, bipolar disorder, psychosis, or suicidal thoughts or actions; 2  motor tics (muscle twitches) or Tourette's syndrome; 3  blood circulation problems in the hands or feet; 4  seizures or epilepsy;