It is very important that your doctor check you at regular visits to make sure that this medicine is working properly. Blood tests may be needed to check for unwanted effects.
Using this medicine while you are pregnant can harm your unborn baby. Use an effective form of birth control while you are using this medicine to keep from getting pregnant. If you think you have become pregnant while using the medicine, tell your doctor right away.
Tell your doctor right away if you are having burning, numbness, tingling, or painful sensations in the arms, hands, legs, or feet. These could be symptoms of a condition called peripheral neuropathy.
Dizziness, lightheadedness, or even fainting may occur when you get up suddenly from a lying or sitting position. Getting up slowly may help lessen this problem. Also, lying down for a while may relieve dizziness or lightheadedness.
This medicine may cause some people to become dizzy, drowsy, tired, or less alert than they are normally. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert. You may rise up slowly from sitting or lying position to help prevent lightheadedness or dizziness.
Some people who have used this medicine developed serious heart problems. Tell your doctor right away if you have chest pain or discomfort, shortness of breath, irregular heartbeat, or swelling of the feet, ankles, or legs while you are using this medicine.
This medicine may increase your chance of having a brain condition called reversible posterior leukoencephalopathy syndrome (RPLS). Stop using this medicine and check with your doctor right away if you start having headaches, seizures, extreme drowsiness, confusion, or problems with vision while you are using this medicine.
This medicine may cause nausea, vomiting, constipation, and diarrhea, so it is important to drink plenty of fluids. If you experience dizziness or lightheadedness, contact your doctor. These could be symptoms of dehydration (not enough water in your body).
Bortezomib can temporarily lower the number of white blood cells in your blood, increasing the chance of getting an infection. It can also lower the number of platelets, which are necessary for proper blood clotting. If this occurs, there are certain precautions you can take, especially when your blood count is low, to reduce the risk of infection or bleeding:
- If you can, avoid people with infections. Check with your doctor immediately if you think you are getting an infection or if you get a fever or chills, cough or hoarseness, lower back or side pain, or painful or difficult urination.
- Check with your doctor immediately if you notice any unusual bleeding or bruising; black, tarry stools; blood in the urine or stools; or pinpoint red spots on your skin.
- Be careful when using a regular toothbrush, dental floss, or toothpick. Your medical doctor, dentist, or nurse may recommend other ways to clean your teeth and gums. Check with your medical doctor before having any dental work done.
- Do not touch your eyes or the inside of your nose unless you have just washed your hands and have not touched anything else in the meantime.
- Be careful not to cut yourself when you are using sharp objects such as a safety razor or fingernail or toenail cutters.
- Avoid contact sports or other situations where bruising or injury could occur.
This medicine may cause a serious type of reaction called tumor lysis syndrome (TLS). Your doctor may give you a medicine to help prevent this. Call your doctor right away if you have a decrease or change in urine amount; joint pain, stiffness, or swelling; lower back, side, or stomach pain; a rapid weight gain; swelling of the feet or lower legs; or unusual tiredness or weakness.
If you are diabetic and you are taking an oral antidiabetic medicine, you should check your blood sugar level often and report any unusual changes to your doctor.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal (e.g., St. John's wort) or vitamin supplements.