Before Using

Drug information provided by: Merative, 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:

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 performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of cysteine injection in children. However, children are more likely to have immature kidney and liver functions, which may require caution in patients receiving this medicine.

Geriatric

Appropriate studies on the relationship of age to the effects of cysteine injection have not been performed in the geriatric population. Safety and efficacy have not been established.

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

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. Tell your healthcare professional if you are taking any other prescription or nonprescription (over-the-counter [OTC]) medicine.

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:

  • Acid-base imbalance or
  • Electrolyte imbalance—Should be corrected first before receiving this medicine.
  • Acidosis (caused by low cardiac output) or
  • Amino acid metabolism, inborn error or
  • Pulmonary edema (fluid in the lungs)—Should not be used in patients with these conditions.
  • Gallstones or
  • Hyperammonemia (high ammonia levels in the blood) or
  • Liver disease—Use with caution. May make these conditions worse.
  • Kidney disease—Giving this medicine for a long time in preterm babies may increase risk for aluminum toxicity.

Portions of this document last updated: Feb. 01, 2024

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