glutathione mccm Medical Cosmetics – 1500 IU – 5 French Polynesia Glutathione contains a blend of ingredients that help brighten and enhance skin radiance MCCM Glutathione (1x5ml)

Price wise not exactly cheap but its about sgd$8

QuantiChrom Glutathione (GSH) Assay Kit Application For quantitative determination of reduced glutathione (GSH) and evaluation of drug effects on glutathione metabolism

However, there are vegetarian sources of sulfur as well, such as cruciferous vegetables like: broccoli Brussels sprouts cauliflower kale Vitamin C is a water-soluble vitamin found in a variety of foods, particularly fruits, such as: strawberries citrus fruit papaya kiwi bell pepper This vitamin has many functions, including working as an antioxidant to protect cells from oxidative damage

"The mechanism of thioredoxin reductase from human placenta is similar to the mechanisms of lipoamide dehydrogenase and glutathione reductase and is distinct from the mechanism of thioredoxin reductase from Escherichia coli"

While glutathione is still great in the morning, taking it after a workout can also help address the immediate oxidative stress caused by intense physical exertion