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. 2019 Dec 1;11(12):640. doi: 10.3390/pharmaceutics11120640

Table 1.

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.