Prescription? Is this a prescription dosage? If so, talk with your doctor regarding side effects and drug interactions. If it is not your dose of medication, then i would advise avoiding taking too much of this medication. There is no "safe" medication -- not even over the counter medications.
Ritalin (methylphenidate) That depends on dose of each & whether prescribed & monitored by a doctor. If so, usually Ritalin (methylphenidate) immediate release works for 4-6 hours & can be given 3x daily, with last dose no later than 4 P.M. Due to possible interference with sleep. The slow release ritalin-la is long acting and usually given in A.M. & occasionally an added lower dose is given @2 P.M. If needed.
DOSE NOT NO OF PILLS. The number of pills does not denote dangerousness. The dose of the medicine is a better indicator. The range of dose for Ritalin (methylphenidate) depends upon the age of the person as well as any other medical isues or concomitatnt use of medicines. Use of Ritalin (methylphenidate) should be monitored for any adverse effects and therapeutic benefit and dose adjusted accordingly rather then worry about the number of pills.