| ACE | Angiotensin converting enzymes |
| HPMC | Hydroxyl propyl methyl cellulose |
| SEM | Scanning electron microscopy |
| RAAS | Renin–angiotensin–aldosterone system |
| DLS | Dynamic light scattering zetasizer |
| DOE | Design of expert |
| RSM | Response surface methodology |
| NPH | Nanosuspension prepared with HPMC |
| ACEI | Angiotensin converting enzymes inhibition |
| PdI | Polydispersity index |