Idenix Pharmaceuticals (IDIX)

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Tyzeka vs Baraclude US Scripts (Rolling and Raw)

[NRx=number of new prescriptions; TRx=number
of total prescriptions (new+renewal). For recently
launched drugs, the trend in NRx is an indictor of
what can be expected for TRx with a modest time lag.
Note that a prescription is counted as new whenever
it is newly written, even if is for a drug the patient is
already taking.

Caution: these numbers should not be taken too
literally inasmuch as the “comparable dates” may not
really be comparable. Still, I think it’s a worthwhile
presentation to get a general feel for the sales ramps.]


Tyzeka vs Baraclude Rolling US Scripts
by Comparable Calendar Date (2007 vs 2005)
Four-Week Rolling Average

          Tyzeka   Baraclude    
           NRx TRx  NRx TRx 
 01/18/08  118 318  225 655  01/20/06 
 01/11/08  116 310  229 628  01/13/06 
 01/04/08  121 328  222 593  01/06/06 
 12/28/07  117 325  216 564  12/30/05 
 12/21/07  119 341  234 581  12/23/05 
 12/14/07  118 336  220 537  12/16/05 
 12/07/07  113 326  203 510  12/09/05 
 11/30/07  102 303  204 502  12/02/05 
 11/23/07  104 296  191 477  11/25/05 
 11/16/07  112 317  190 469  11/18/05 
 11/09/07  105 291  201 456  11/11/05 
 11/02/07  116 305  181 431  11/04/05 
 10/26/07  123 305  179 416  10/28/05 
 10/19/07  119 290  174 406  10/21/05 
 10/12/07  117 292  152 381  10/14/05 
 10/05/07  111 286  159 377  10/07/05 
 09/28/07   96 268  150 356  09/30/05 
 09/21/07   92 272  155 362  09/23/05 
 09/14/07   96 279  152 346  09/16/05 
 09/07/07   96 274  140 311  09/09/05 
 08/31/07  107 281  142 306  09/02/05 
 08/24/07  113 267  131 279  08/26/05 
 08/17/07  118 264  133 267  08/19/05 
 08/10/07  118 257  139 267  08/12/05 
 08/03/07  115 261  133 250  08/05/05 

Tyzeka vs Baraclude Raw US Scripts
by Comparable Calendar Date (2007 vs 2005)

          Tyzeka   Baraclude 
           NRx TRx  NRx TRx 
 01/18/08  113 323  224 707  01/20/06 
 01/11/08  120 314  273 740  01/13/06 
 01/04/08  142 354  243 662  01/06/06 
 12/28/07   98 281  161 511  12/30/05 
 12/21/07  102 290  237 599  12/23/05 
 12/14/07  141 387  247 601  12/16/05 
 12/07/07  128 341  218 543  12/09/05 
 11/30/07  104 346  233 580  12/02/05 
 11/23/07   98 269  183 424  11/25/05 
 11/16/07  122 349  178 494  11/18/05 
 11/09/07   83 249  220 509  11/11/05 
 11/02/07  112 315  183 480  11/04/05 
 10/26/07  129 356  178 394  10/28/05 
 10/19/07   96 245  222 441  10/21/05 
 10/12/07  126 304  142 410  10/14/05 
 10/05/07  139 314  175 420  10/07/05 
 09/28/07  116 299  156 355  09/30/05 
 09/21/07   87 252  133 339  09/23/05 
 09/14/07  100 277  171 395  09/16/05 
 09/07/07   82 242  140 335  09/09/05 
 08/31/07   99 318  177 379  09/02/05 
 08/24/07  101 280  119 274  08/26/05 
 08/17/07  101 254  122 254  08/19/05 
 08/10/07  125 270  149 317  08/12/05 
 08/03/07  123 265  132 269  08/05/05 
 07/27/07  120 268  131 229  07/29/05 
 07/20/07  102 225  144 252  07/22/05 
 07/13/07  115 286  125 250  07/15/05