Figure 1

Figure 2

Composition of formulations (in grams)_
| Film | Propranolol | Ethanol | Castor oil | Ethylcellulose | Halloysite | Hypromellose |
|---|---|---|---|---|---|---|
| E | 0.02 | 10 | 0.162 | 0.36 | - | - |
| Ha1 | 0.02 | 10 | 0.162 | 0.36 | 0.0225 | - |
| Ha2 | 0.02 | 10 | 0.162 | 0.36 | 0.0450 | - |
| HPMC1 | 0.02 | 10 | 0.162 | 0.36 | 0.0225 | |
| HPMC2 | 0.02 | 10 | 0.162 | 0.36 | 0.0450 |