Frequencies for ndcdescription variable in nadacc20160406 dataset :

              NDC Description |      Freq.     Percent        Cum.
------------------------------+-----------------------------------
              BEYAZ 28 TABLET |          1        7.14        7.14
 JEVANTIQUE LO 0.5 MG-2.5 MCG |          1        7.14       14.29
            NATAZIA 28 TABLET |          1        7.14       21.43
         OSPHENA 60 MG TABLET |          2       14.29       35.71
 RYTARY ER 23.75 MG-95 MG CAP |          2       14.29       50.00
RYTARY ER 36.25 MG-145 MG CAP |          2       14.29       64.29
RYTARY ER 48.75 MG-195 MG CAP |          2       14.29       78.57
RYTARY ER 61.25 MG-245 MG CAP |          2       14.29       92.86
               SAFYRAL TABLET |          1        7.14      100.00
------------------------------+-----------------------------------
                        Total |         14      100.00

by Jean Roth , jroth@nber.org , 10 Feb 2018