Table 4.

Employed mathematical models.

Function	Equation
First-order	$Q=k\cdot t+Q_0$
Korsmeyer–Peppas	$Q=k\cdot t^n$
Hixson–Crowell	$Q^{\frac{1}{3}}=k\cdot t+Q_0{}^{\frac{1}{3}}$

n is the release exponent; Q, percent of drug dissolved at time t; Q⁰, percent of drug dissolved at time t = 0; k, dissolution rate constant.