Per 12oz can: 47.3mg caffeine. Royal Crown (RC) colas have been around for a long time and are currently owned by Cadbury Schweppes. As in the case of Diet Coke â here the diet version has more caffeine than the regular RC Cola. 2.
Modafinil is readily absorbed after oral administration, with peak plasma concentrations occurring at 2-4 hours. The bioavailability of modafinil tablets is approximately equal to that of an aqueous suspension.
Peak plasma amphetamine concentrations occur around 10 hours after methamphetamine use. Interpretation of Urine Test Results: Positive results generally indicate use within 1-4 days but could be up to a week following heavy chronic use.