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Then, can you overdose on tetanus shots?
Tetanus toxoid vaccine is often given immediately after an injury that causes a wound that may be infected with bacteria that causes tetanus. An overdose of this vaccine is unlikely to occur. If you miss a 10-year booster dose or if you get behind schedule, the next dose should be given as soon as possible.
In this regard, is it bad to get Tdap twice?
Studies looked at the safety of giving multiple Tdap doses because there is a theoretical risk for severe local reactions (called hypersensitivity) if the tetanus component of the vaccine is given too often.
Experiencing nausea, vomiting, or diarrhea is considered a mild side effect of the Tdap vaccine. The CDC estimates 1 in 10 adults receiving the Tdap vaccine will experience this side effect. If you experience this, be sure to rest, drink plenty of fluids, and avoid foods that could further upset your stomach.