Table 6.

Summary of stability studies.

TEST (Claimed content)	INTERVAL
	Initial	1Month	2Month	3Month	4Month	5Month	6Month	Mean	RSD%
Stability Studies at Accelerated (40ºC+75%H)
PCM	99.467	98.769	98.628	98.591	97.286	98.139	97.528	98.344	0.767
MP	99.800	99.576	99.783	100.546	99.826	98.763	98.375	99.524	0.732
PP	98.733	98.527	98.386	97.672	97.482	97.135	96.628	97.795	0.800
CTZ	99.267	99.626	99.295	99.386	98.492	99.184	98.783	99.148	0.388
Stability Studies at Long Term (30ºC+65%H)
PCM	99.467	99.684	99.527	99.185	99.832	99.557	99.327	99.511	0.216
MP	99.800	99.536	99.638	99.318	99.107	98.836	98.937	99.310	0.369
PP	98.733	99.538	98.962	98.826	99.284	98.837	98.893	99.010	0.295
CTZ	99.267	99.538	99.294	99.628	99.192	98.963	98.882	99.252	0.276

All results are expressed in %age values