Diphtheria and Tetanus Toxoids Adsorbed is a sterile, cloudy, white, uniform suspension of diphtheria and tetanus toxoids adsorbed on aluminum phosphate and suspended in isotonic sodium chloride solution for intramuscular injection only. Diphtheria and Tetanus Toxoids Adsorbed vaccine does not contain a preservative.
Each 0.5 mL dose is formulated to contain: 25 Lf diphtheria toxoid and 5 Lf tetanus toxoid. Other ingredients per 0.5 mL dose include: 1.5 mg aluminum phosphate and <100 mcg free formaldehyde.
Diphtheria toxoid is prepared from the toxin produced during the growth of a selected strain of Corynebacterium diphtheriae grown with aeration in submerged culture. The toxin is purified by precipitation, converted to toxoid by the addition of formalin and concentrated by ultrafiltration. The culture medium consists of a tryptic digest of casein, supplemented with cystine, maltose, uracil, inorganic salts and vitamins.
Tetanus toxoid is prepared from the toxin produced during the growth of a selected strain of Clostridium tetani. The toxin is converted to toxoid by the addition of formalin, concentrated and then purified. The culture medium consists of a tryptic digest of casein, supplemented with cystine, dextrose, uracil, inorganic salts and vitamins.
When tested in guinea pigs, the tetanus and diphtheria components induce at least 2 neutralizing units/mL of serum.
The vial stopper is not made with natural rubber latex.