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Formula factors and responses tadalafil-pumpkin seed oil-self nano-emulsified drug delivery system.
| Factors | Levels | ||
| Low | High | ||
| PSO (%) | 10 | 30 | |
| Tween 80 (%) | 30 | 60 | |
| PEG 200 (%) | 20 | 40 | |
| Responses | Low | High | Goal |
| Globule size (nm) | 55 | 324 | Minimize |
| Zeta potential (mV) | 1.45 | 13.75 | Maximize |
Abbreviations: PSO, pumpkin seed oil; PEG, polyethylene glycol.
