Table I.

Degradation Temperatures of the Three Studied Drugs and Their Respective Eutectic Mixtures at 5, 10, 25, and 50% Weight Loss, Respectively

Sample	Weight loss
	5 ± 0.5%	10 ± 0.5%	25 ± 0.5%	50 ± 0.5%
	Temperature (°C)
Lidocaine	196.56	210.79	231.38	248.12
Tetracaine	163.82	179.86	202.11	219.53
Lidocaine-tetracaine EM	146.01	171.05	195.46	215.94
Camphor	76.86	94.42	121.41	144.48
Lidocaine-camphor EM	42.72	55.47	87.76	140.83

EM eutectic mixtures