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Before Using
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:
Allergies
Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Pediatric
Appropriate studies have not been performed on the relationship of age to the effects of leflunomide in the pediatric population. Safety and efficacy have not been established.
Geriatric
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of leflunomide in the elderly.
Pregnancy
| Pregnancy Category | Explanation | |
|---|---|---|
| All Trimesters | X | Studies in animals or pregnant women have demonstrated positive evidence of fetal abnormalities. This drug should not be used in women who are or may become pregnant because the risk clearly outweighs any possible benefit. |
Breastfeeding
There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.
Drug Interactions
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Methotrexate
- Warfarin
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
- Bacillus of Calmette and Guerin Vaccine, Live
- Cholestyramine
- Measles Virus Vaccine, Live
- Mumps Virus Vaccine, Live
- Poliovirus Vaccine, Live
- Rifampin
- Rotavirus Vaccine, Live
- Rubella Virus Vaccine, Live
- Smallpox Vaccine
- Typhoid Vaccine
- Varicella Virus Vaccine
- Yellow Fever Vaccine
Other Interactions
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other Medical Problems
The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:
- Blood or bone marrow problems, history of or
- Bone marrow dysplasia or
- Immune system problem or
- Infection, severe or uncontrolled or
- Liver disease, including hepatitis B or C or
- Lung disease, history of or
- Tuberculosis, history of or
- Weak immune system—Use with caution. May make these conditions worse.
- Kidney disease—Use with caution. Effects may be increased because of slower removal of the medicine from the body.
