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Site Reactions
Skin Rashes
Fatigue
Diarrhea
Constipation
Fever
Nausea and Vomiting
You may experience some itching, soreness, or swelling at the site where the needle pierced the skin. This is usually mild and subsides on its own.
Sip clear liquids, such as ginger ale or broth, throughout the day. Your doctor may also prescribe an anti-nausea medication, called an antiemetic.
Rashes around the injection site are usually mild, but if they need treatment, your doctor may prescribe creams, steroids, or another medication to ease itching and redness.
Take breaks when needed, and do your most important tasks when you have the most energy.
Ask your doctor if you can take an over-the-counter antidiarrheal drug. When symptoms start, try a clear liquid diet (water, ice pops, clear broth), and when you’re ready for solids, try the BRAT (bananas, rice, applesauce, and toast) diet. If diarrhea persists for more than 24 hours, call your doctor.
Eat insoluble fiber, such as brown rice, leafy green vegetables, and potatoes. Ask your doctor if you can take an enema, laxative, suppository, or other medication.
A fever can be a reaction to treatment or caused by an infection, which is common in people with weaker immune systems. If your temperature is higher than usual, call your doctor.
It can take up to a month to truly judge how effective a new medication is. But if you feel significantly worse in the first week, alert your doctor immediately, says Goodman.