Table-2. Formulations Designed by Design-Expert Software with Effervescent Bases.

Formulations	Citric acid (mg)	Na bicarbonate (mg)	Friability (%)	Disintegration time (sec)
F 14	27.00	24.00	0.40	49
F 15	9.00	24.00	0.31	72
F 16	18.00	24.00	0.36	61
F 17	9.00	35.00	0.32	69
F 18	18.00	13.00	0.33	77
F 19	18.00	35.00	0.33	58
F 20	9.00	13.00	0.31	75
F 21	27.00	13.00	0.37	64
F 22	27.00	35.00	0.42	47