Based on the pharmacokinetics of the Tetanus toxoid vaccine, there are no conceivable porphyrinogenic effects.

Tetanus toxoid.

Prophylaxis against tetanus. It is administered by intramuscular injections, in primary immunization series usually according to a three dose schedule. Single booster doses may be recommended every 10 years or in tetanus prone injuries.

The tetanus toxoid vaccine is not metabolized by the cytochrome P450 system.

One report of a possible acute porphyric attack in a female with AIP, but the attack was poorly documented and there were other concomittant factors that could cause the attack. This report has therefore not been taken into account in the judgement of the porphyrinogenicity of the vaccine.