Precautions

Drug information provided by: Micromedex

It is very important that your doctor check your progress closely while you are using this medicine to see if it is working properly and to allow for a change in the dose. Blood tests may be needed to check for any unwanted effects.

Women should take the necessary precautions to avoid pregnancy while taking lenalidomide. Begin 2 forms of reliable contraception 4 weeks before starting lenalidomide, and continue contraceptive measures during therapy and for 4 weeks after the last dose. Routine pregnancy tests are necessary with this medicine. Call your doctor or 1-888-668-2528 for emergency contraception information if you think you are pregnant.

Men, even those who have had a vasectomy, must prevent pregnancy in their sexual partners during therapy and for 4 weeks after the last dose. Do not donate sperm while taking this medicine. Call your doctor or 1-888-668-2528 for emergency contraception information if you think your sexual partner may be pregnant.

Do not donate blood during therapy and for 1 month after the last dose.

This medicine lowers the number of some types of blood cells in your body. Because of this, you may bleed or get infections more easily. To help with these problems, avoid being near people who are sick or have infections. Wash your hands often. Stay away from rough sports or other situations where you could be bruised, cut, or injured. Brush and floss your teeth gently. Be careful when using sharp objects, including razors and fingernail clippers.

This medicine may increase your risk of having blood clots. Check with your doctor right away if you have the following symptoms: anxiety, chest pain, fainting, a fast heartbeat, sudden shortness of breath or troubled breathing, or pain, redness, or swelling in the arm or leg.

Serious skin reactions can occur with this medicine. Check with your doctor right away if you have blistering, peeling, or loosening of the skin, red skin lesions, severe acne or skin rash, sores or ulcers on the skin, or fever or chills while you are using this medicine.

Lenalidomide may cause a serious type of reaction called tumor lysis syndrome. 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.

Serious liver problems can occur with this medicine. Your doctor may order blood tests to monitor your liver. Check with your doctor right away if you have any symptoms of liver problems, such as dark-colored urine or pale stools, nausea, vomiting, loss of appetite, pain in your upper stomach, or yellow skin or eyes.

This medicine may increase your risk of getting certain cancers (eg, acute myelogenous leukemia, Hodgkin lymphoma). Talk to your doctor if you have concerns about this risk.

This medicine may cause a tumor flare reaction. Tell your doctor if you have swollen and painful lymph nodes, a mild fever, pain, or a rash.

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 or vitamin supplements.