From: Development and evaluation of controlled porosity osmotic pump for Nifedipine and Metoprolol combination
S.No
Pore former (% w/w of CA)
Burst strength (MPa)
1
PVP (0)
50
2
PVP (30)
14.25
3
PVP (40)
8.18
4
PVP (50)
5.31
5
PEG-400 (40)
18.25
6
HPMC (40)
8.37