GSH levels increaseddose-dependently in response to all four drugs. Sulforaphaneproduced the most potent effect, increasing GSH by up to 2.4-fold. PC-Res increasedGSH up to
1.6-fold, followed by TBHQ (1.5-fold) and LA (1.4-fold).
While the order of drug potency remained almost the same for boosting GSH and CysGly, all drugs were able to increaseGSH levels between 1.2 and 1.4 times more than they were able to increaseCysGly (Table 1).