Based on the pharmacokinetics of the typhoid, purified polysaccharide antigen vaccine, there are no conceivable porphyrinogenic effects.

Purified Vi capsular polysaccharide of Salmonella typhi

The typhoid, purifies polysaccharide antigen vaccine is indicated for active immunization against typhoid fever caused by Salmonella enterica serovar typhi in adults and children 2 years of age or older. It is administered intramuscularly or subcutaneously as a single dose. Repeated vaccination every three years may be indicated for subjects at risk from typhoid fever.

The typhoid polysaccharide vaccine is not metabolized by the cytochrome P450 system.

Uneventful use reported in 2 patients with acute porphyria.