Table III.

In-vitro Dissolution Profile of Propranolol HCl from the Formulations Containing HPMC K15 or Kollidon® SR in pH 6.8 Phosphate Buffer

Sr. No.	Mean cumulative percent ± S.D drug released
	Time (h)	PrH 1	PrH 2	PrH 3	PrH 4	PrK1	PrK2	PrK3	PrK4
1.	1	33.31 ± 0.98	13.36 ± 1.17	13.788 ± 1.22	11.56 ± 0.93	32.23 ± 1.21	13.23 ± 1.34	9.22 ± 1.23	8.22 ± 1.1
2.	2	62.06 ± 0.91	25.87 ± 0.39	27.894 ± 1.54	18.74 ± 1.61	58.76 ± 0.76	24.26 ± 1.56	18.24 ± 1.65	16.65 ± 2.1
3.	3	87.32 ± 1.44	36.06 ± 1.30	42.373 ± 0.98	28.24 ± 0.69	81.34 ± 1.22	35.34 ± 1.67	27.31 ± 1.87	23.34 ± 1.43
4.	4	98.18 ± 0.52	53.39 ± 0.57	52.755 ± 0.78	39.36 ± 0.76	97.98 ± 1.21	51.25 ± 1.98	35.32 ± 1.90	30.56 ± 1.34
5.	5		67.14 ± 0.77	62.260 ± 0.87	50.99 ± 0.69		65.28 ± 2.10	44.31 ± 1.98	36.29 ± 1.87
6.	6		73.86 ± 0.62	71.189 ± 1.34	59.18 ± 0.85		76.23 ± 1.67	52.38 ± 1.76	42.09 ± 1.98
7.	7		78.48 ± 0.09	75.973 ± 1.23	67.49 ± 0.72		87.45 ± 1.98	60.11 ± 0.89	47.59 ± 1.65
8.	8		84.60 ± 0.66	80.469 ± 1.43	73.43 ± 0.43		93.56 ± 1.87	68.22 ± 0.87	52.34 ± 1.56
9.	9		91.30 ± 0.64	83.311 ± 1.32	75.18 ± 0.96		97.45 ± 0.95	77.31 ± 0.89	57.98 ± 0.98
10.	10		95.84 ± 0.53	86.682 ± 1.12	79.45 ± 0.64			85.22 ± 0.67	62.6 ± 1.89
11	11		99.35 ± 0.31	89.669 ± 1.94	82.31 ± 0.68			91.22 ± 1.76	66.4 ± 1.95
12	12			91.215 ± 1.21	86.93 ± 0.81			97.23 ± 1.13	80.9 ± 1.76