Drug information provided by: IBM Micromedex
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:
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.
Appropriate studies have not been performed on the relationship of age to the effects of interferon beta-1a injection in the pediatric population. Safety and efficacy have not been established.
Although appropriate studies on the relationship of age to the effects of interferon beta-1a injection have not been performed in the geriatric population, geriatric-specific problems are not expected to limit the usefulness of interferon beta-1a injection in the elderly. However, elderly patients are more likely to have age-related kidney, liver, or heart problems, which may require caution in patients receiving interferon beta-1a injection.
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.
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
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.
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:
Alcohol abuse, history of or
Angina (severe chest pain) or
Autoimmune disorders (eg, autoimmune hepatitis, idiopathic thrombocytopenia) or
Bone marrow problems (decreased amounts of red or white blood cells in your body), history of or
Congestive heart failure or
Depression or mental problems, history of or
Heart disease (eg, cardiomyopathy) or
Heart rhythm problems (eg, arrhythmia) or
Liver disease or
Seizures or epilepsy, history of or
Thyroid problems—Use with caution. May make these conditions worse.
Allergy to human albumin, history of—Avonex® powder and Rebif® prefilled syringe and autoinjector should not be used in patients with this condition.
Infection—May decrease your body's ability to fight an infection.