You don’t need to run a marathon or anything. Simply move your body around enough to keep your blood flowing for 30-45 seconds. If you were injected on your side or hip, stretch that area out the best that you can to keep the injection site from swelling up. Staying on your feet will help in this case.

Avoid using a warm pack on the injection site afterward since it won’t ease the pain as well as something cold. However, you can use a warm back before the injection to help increase absorption.

Do not take more than the daily recommended amount of ibuprofen or acetaminophen. Acetaminophen is the pain-relieving ingredient in Tylenol.

Don’t just chug water to the point that you start cramping and feeling sick. Just calmly drink water periodically after your shot to rehydrate.

Do not apply an ice pack to the injection site without covering the skin with a towel or thick cloth first. The cold will also reduce the pain and tenderness in the area as the swelling goes down. You can easily make your own ice pack by stuffing a resealable plastic bag with ice cubes. Heat can help with muscle soreness, but cold reduces swelling. Heat tends to not be as helpful for this particular task.

You can safely take a maximum of 1200 mg of ibuprofen in a 24 hour period. [10] X Trustworthy Source US Food and Drug Administration U. S. government agency responsible for promoting public health Go to source

While you normally want to move around after an injection, swelling and inflammation usually takes longer to heal if it isn’t rested. [12] X Research source

In general, you should consult your doctor if any of your symptoms continue to get worse instead of better.

Make sure your child doesn’t move around a lot while they receive the injection since it will be more difficult for whoever is giving the shot.

Give your child 1-3 8 fluid ounces (240 mL) cups of water to keep them hydrated. Encourage them to drink a little more if they’re up to it!

Do not give your children aspirin products if they develop a fever or flu-like symptoms. The medication is not designed for children under 3 under any condition. [17] X Trustworthy Source Mayo Clinic Educational website from one of the world’s leading hospitals Go to source

You can use an ice pack if you want, but you may have a hard time getting younger children to sit still with the cold pack on their skin.