ABCDEFGHIJKLMNOPQRSTUVWXYZAAABACADAEAFAGAHAIAJAKALAMANAOAPAQARASATAUAVAWAXAYAZBABBBCBDBEBFBGBHBIBJBKBLBMBNBOBPBQBRBSBT
1Main
2Branded NameNorvasc
3Generic NameAmlodipine besylate
4IndicationHypertension and Angina
5MechanismCalcium Channel Blocker - dihydropyridine calcium antagonist (calcium ion antagonist or slow-channel blocker)
6Inhibits the transmembrane influx of calcium ions into vascular smooth muscle and cardiac muscle. Binds to both dihydropyridine and nondihydropyridine binding sites.
7The contractile processes of cardiac muscle and vascular smooth muscle depend on the movement of extracellular calcium ions into these cells through specific ion channels.
8Amlodipine inhibits calcium ion influx across cell membranes selectively, with a greater effect on vascular smooth muscle cells than on cardiac muscle cells.
9AdministrationOral
10CompetitionMYL/RDY's AmVaz, ACEs, ARBs, dieuretics, renins
11PKF=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.
1293% 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.
13Approved/Launched7/31/1992
14IPCOM 1/31/2007, Salt 9/25/2007. MYL has received final generic approval. Several firms have received tentative approvals including PRX, PRGO. Pediatric exclusivity?
15Efficacy
16Safety
17Cost
18
19Trying to switch people to Caduet
20
21ASCOT
22Stopped early due to greater than anticipated benefit for Norvasc vs. atenolol.
23Published in Lancet 9/2005.
24
25COM patent #4572909 expires 1/31/2007 (including P-extention)
26Salt patent #4879303 expires 9/25/2007
27DC of NJ dismissed PFE's lawsuit against RDY, clearing the way for non-AB, because PFE received a 3 year patent extention.
28The judge felt the extention applied to the salt, not the compound itself. A higher court reversed the lower court decision.
29Proceedings likely set for early 2006, final approval for MYL/RDY should be soon.
30New patents have been filed. - Cowen
31
321994199519961997199819992000200120022003200420052006E200720082009201020112012201320142015201620172018NotesQ198Q298Q398Q498Q199Q299Q399Q499Q100Q200Q300Q400Q101Q201Q301Q401Q102Q202Q302Q402Q103Q203Q303Q403Q104Q204Q304Q404Q105Q205Q305Q405Q106Q206Q306Q406EQ107Q207Q307Q407Q108Q208Q308Q408
33Norvasc 9/072575303033613581384643354462461251643356.6335.66134.26426.8528000000000025.3705600000000011.07411200000000020.21482240000000005567618671719694713778807782805847928860879881962931886963106698310031104124511411032103612531175115611311244118311581208
34US1775193419912112259280342324307306358364346337404439391391426459448380440507436424489585489412471619540523546613626560628
35Ex-US2071240124712500308338329395387407420443436468443489469488455503483506523559547579615660652620565634635633585631557598580