Table 2. Effect of polymers (CP:EC) ratio on the loading efficiency, production yield and particle siz e of Metformin Hydrochloride microparticles .
| Formulations |
Carbomer :EC
ratio |
Production
yield (%±SD) |
Theoretical
drug Content (%) |
Mean drug
Loading (%±SD) |
Drug loading
efficiency (%±SD) |
Mean particle Size
(µm±SD) |
| F1 | 1:2 | 89.64 ± 3.54 | 42.55 | 33.47 ± 1.78 | 78.66 ± 4.19 | 794.33 ± 25.11 |
| F2 | 1:3 | 98.80 ± 6.07 | 33.33 | 32.81 ± 2.49 | 98.44 ± 6.98 | 933.25 ± 10.47 |
| F3 | 1:4 | 85.74 ± 2.48 | 30.77 | 25.19 ± 2.37 | 81.87 ± 7.73 | 1071.52 ± 10.30 |