Codeprex and SPB11

• Generic Name: chlorpheniramine / codeine
• Dosage Forms: extended-release suspension
• Other Brand Names: Codeprex, Codar AR, Tuzistra XR, Cotab A, Cotab AX, Notuss-AC, Z-Tuss AC, Zodryl AC 25, Zodryl AC 30, Zodryl AC 35, Zodryl AC 50, Zodryl AC 40, Zodryl AC 60, Zodryl AC 80, EndaCof-C, TL-Hist CM, Zodryl AC Adult, Lexuss 210, EndaCof-C, Tuxarin ER

Chlorpheniramine is an antihistamine. It blocks the effects of histamine in the body. Chlorpheniramine prevents sneezing; itchy, watery eyes and nose; and other symptoms of allergies and colds. Codeprex is a combination of chlorpheniramine and codeine.

Codeprex is used to treat nasal congestion and coughs associated with allergies and the common cold.

Codeprex may also be used for purposes other than those listed in this medication guide.

• Generic Name: sodium phenylbutyrate
• Dosage Forms: oral powder
• Other Brand Names: Buphenyl

Sodium phenylbutyrate is used together with a proper diet to help treat urea cycle disorders (including a specific liver enzyme deficiency) that help remove ammonia (nitrogen) from the body.

Ammonia is formed from the breakdown of protein in the body. If the ammonia cannot be removed by the body, then a buildup may cause serious unwanted effects. This medicine works by helping to reduce high levels of ammonia in the blood.

This medicine is available only with your doctor's prescription.