Side Effects of This Medicine

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. It is very important that you tell your doctor about any side effect that occurs after a dose of DT or Td , even if the side effect has gone away without treatment. Some types of side effects may mean that you should not receive any more doses of DT or Td.

Get emergency help immediately if any of the following side effects occur :

Rare—Symptoms of allergic reaction

Difficulty in breathing or swallowing; hives; itching, especially of feet or hands; reddening of skin, especially around ears; swelling of eyes, face, or inside of nose; unusual tiredness or weakness (sudden and severe)

Check with your doctor as soon as possible if any of the following side effects occur:

Rare

Confusion; convulsions (seizures); excessive sleepiness; fever over 39.4 °C (103 °F); headache or vomiting (severe or continuing); hives; itching; joint aches or pain; skin rash; swelling, blistering, pain, or other severe reaction at the place of injection (generally starts within 2 to 8 hours after the injection); unusual irritability

Other side effects may occur that usually do not need medical attention. However, check with your doctor if any of the following side effects continue or are bothersome:

More common—For DT and Td

Redness or hard lump at the place of injection (this may last for a few days; however, less often, the hard lump may last for a few weeks)

More common—For DT only

Fever under 39.4 °C (103 °F); swelling, pain, or tenderness at the place of injection (this may last for a few days)

Less common—For DT and Td

Dent or indentation at the place of injection

Less common—For DT only

Crying (continuing); drowsiness; fretfulness; loss of appetite; vomiting

Less common—For Td only

Chills; fast heartbeat; fever under 39.4 °C (103 °F); general feeling of discomfort or illness; headache; muscle aches; swelling of glands in armpit; unusual tiredness or weakness

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.