theranaturals sells GSH meant for use in a nebulizer -- it's GSH + sodium bicarbonate. perhaps other companies do as well, and some people make their own mix, reduced glutathione powder plus sodium bicarbonate. always better to be working with a health pro, if possible. read cautions on the theranatuals website, or other sites. people with asthma need to be extra careful. there's also a 2017 study showing that liposomal GSH raises GSH levels and immune markers. good luck!