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Table 3 Effect of level and type of pore former on burst strength

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