O If you take melatonin supplements and want to ensure they are optimally effective, the best strategy would be to
o o o o o
O a. use a timer or alarm to remind yourself to take it at the recommended time.
O b. be sure to take a dose that is no more than 50 mcg different than the recommended dose.
O c. use an extended release rather than instant release formulation.
O d. take it in the same environment in which you will later go to sleep.