Q: I want to know the benefits of taking L-GLUTATHIONE supplements. In what quantity should it be taken and please tell me the names of some safe preparations of this available in the market?

A:L-glutathione is not a tonic but a prescription medicine that is used in poisoning of heavy metals, pulmonary fibrosis, liver and corneal (eye) disorders, eczema etc. Hence it cannot be used as a supplement. Since it may have some anti-oxidant properties, some pharma companies are unethically and illegally promoting it like a tonic.