Before Using

Drug information provided by: 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 alfacon-1 in the pediatric population. Safety and efficacy have not been established.


Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of interferon alfacon-1 in the elderly. However, elderly patients are more likely to have age-related kidney, liver, or heart problems, which may require caution and an adjustment in the dose for patients receiving interferon alfacon-1.


Information about this interferon-alfacon-1-subcutaneous-route
Pregnancy Category Explanation
All Trimesters C Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.


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

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 is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

  • Rotavirus Vaccine, Live

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:

  • Angina (severe chest pain) or
  • Bleeding problems or
  • Bone marrow problems (e.g., aplastic anemia, neutropenia, thrombocytopenia) or
  • Depression or mental problems, history of or
  • Diabetes or
  • Diabetic retinopathy (eye problem caused by diabetes), history of or
  • Eye or vision problems (e.g., bleeding, retinopathy), history of or
  • Heart attack, history of or
  • Heart or blood vessel disease, history of or
  • Heart rhythm problems (e.g., arrhythmia) or
  • Hyperglycemia (high blood sugar) or
  • Hypertension (high blood pressure) or
  • Hypertensive retinopathy (eye problem caused by increased blood pressure) or
  • Hypertriglyceridemia (high fats or triglycerides in the blood) or
  • Hypotension (low blood pressure) or
  • Idiopathic thrombocytopenic purpura (autoimmune disorder) or
  • Intestinal problems (e.g., colitis) or
  • Kidney disease or
  • Liver disease (e.g., cirrhosis) or
  • Lung disease or other breathing problems (e.g., COPD, interstitial pneumonitis, pneumonia, sarcoidosis), or history of or
  • Organ transplant, history of or
  • Psoriasis (skin disease) or
  • Rheumatoid arthritis or
  • Stroke, history of or
  • Systemic lupus erythematosus (SLE) (immune system disorder) or
  • Thyroid disease, history of or
  • Weak immune system (e.g., cancer, HIV infection)—Use with caution. May make these conditions worse.
  • Autoimmune hepatitis (liver inflammation) or
  • Decompensated liver disease or
  • Kidney disease, severe or
  • Sickle cell anemia (red blood cell disorder) or
  • Thalassemia major (genetic blood disorder)—Should not be used in patients with these conditions.
  • Infection—May decrease your body's ability to fight infection.