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| Branded Name | Norvasc | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Generic Name | Amlodipine besylate | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Indication | Hypertension and Angina | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Mechanism | Calcium Channel Blocker - dihydropyridine calcium antagonist (calcium ion antagonist or slow-channel blocker) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | Inhibits the transmembrane influx of calcium ions into vascular smooth muscle and cardiac muscle. Binds to both dihydropyridine and nondihydropyridine binding sites. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | The contractile processes of cardiac muscle and vascular smooth muscle depend on the movement of extracellular calcium ions into these cells through specific ion channels. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | Amlodipine inhibits calcium ion influx across cell membranes selectively, with a greater effect on vascular smooth muscle cells than on cardiac muscle cells. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Administration | Oral | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Competition | MYL/RDY's AmVaz, ACEs, ARBs, dieuretics, renins | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| PK | F=64-90%. Absorption produces peak plasma concentrations between 64-90%. 90% converted to inactive metabolites. 10% of parent and 60% of metabolites excreted through urine. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | 93% of the circulating drug is bound to plasma proteins in HTN patients. Terminal elimination half-life is 30-50 hours. Steady state reached after 7-8 days qd dosing. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Approved/Launched | 7/31/1992 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| IP | COM 1/31/2007, Salt 9/25/2007. MYL has received final generic approval. Several firms have received tentative approvals including PRX, PRGO. Pediatric exclusivity? | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Efficacy | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Safety | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Cost | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| Trying to switch people to Caduet | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| ASCOT | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Stopped early due to greater than anticipated benefit for Norvasc vs. atenolol. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Published in Lancet 9/2005. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| COM patent #4572909 expires 1/31/2007 (including P-extention) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Salt patent #4879303 expires 9/25/2007 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| DC of NJ dismissed PFE's lawsuit against RDY, clearing the way for non-AB, because PFE received a 3 year patent extention. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| The judge felt the extention applied to the salt, not the compound itself. A higher court reversed the lower court decision. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Proceedings likely set for early 2006, final approval for MYL/RDY should be soon. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| New patents have been filed. - Cowen | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006E | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | Notes | Q198 | Q298 | Q398 | Q498 | Q199 | Q299 | Q399 | Q499 | Q100 | Q200 | Q300 | Q400 | Q101 | Q201 | Q301 | Q401 | Q102 | Q202 | Q302 | Q402 | Q103 | Q203 | Q303 | Q403 | Q104 | Q204 | Q304 | Q404 | Q105 | Q205 | Q305 | Q405 | Q106 | Q206 | Q306 | Q406E | Q107 | Q207 | Q307 | Q407 | Q108 | Q208 | Q308 | Q408 |
| Norvasc 9/07 | | | | | 2575 | 3030 | 3361 | 3581 | 3846 | 4335 | 4462 | 4612 | 5164 | 3356.6 | 335.66 | 134.264 | 26.852800000000002 | 5.370560000000001 | 1.0741120000000002 | 0.21482240000000005 | | | | | | | 567 | 618 | 671 | 719 | 694 | 713 | 778 | 807 | 782 | 805 | 847 | 928 | 860 | 879 | 881 | 962 | 931 | 886 | 963 | 1066 | 983 | 1003 | 1104 | 1245 | 1141 | 1032 | 1036 | 1253 | 1175 | 1156 | 1131 | 1244 | 1183 | 1158 | 1208 | | | | | | | | | |
| US | | | | | | | | | 1775 | 1934 | 1991 | 2112 | | | | | | | | | | | | | | | 259 | 280 | 342 | 324 | 307 | 306 | 358 | 364 | 346 | 337 | 404 | 439 | 391 | 391 | 426 | 459 | 448 | 380 | 440 | 507 | 436 | 424 | 489 | 585 | 489 | 412 | 471 | 619 | 540 | 523 | 546 | 613 | 626 | 560 | 628 | | | | | | | | | |
| Ex-US | | | | | | | | | 2071 | 2401 | 2471 | 2500 | | | | | | | | | | | | | | | 308 | 338 | 329 | 395 | 387 | 407 | 420 | 443 | 436 | 468 | 443 | 489 | 469 | 488 | 455 | 503 | 483 | 506 | 523 | 559 | 547 | 579 | 615 | 660 | 652 | 620 | 565 | 634 | 635 | 633 | 585 | 631 | 557 | 598 | 580 | | | | | | | | | |