Role of Molecular Hydrogen in Ageing and Ageing-Related Diseases

Table 2

Possible H₂ administration routes and their characteristics.

Possible H2 administration routes	Advantages and issues
H2 inhalation	Simple and easy; rapid action (concentration below 4% to prevent risk of explosion)
Oral intake HW	Practical and safe (H2 must be stored in an aluminum container to avoid a decrease in H2 concentration)
Intravenous or intraperitoneal injection of HS	Allows for H2 delivery with great efficacy and highly accurate doses
H2 bathing	H2 can reach the entire body in only 10 min after bathing safely and easily