• following a fluorouracil or capecitabine overdose regardless of the presence of symptoms, or
• who exhibit early-onset, severe or life-threatening toxicity affecting the cardiac or central nervous system, and/or early-onset, unusually severe adverse reactions (e.g., gastrointestinal toxicity and/or neutropenia) within 96 hours following the end of fluorouracil or capecitabine administration. (1)

Limitations of use:

• VISTOGARD is not recommended for the non-emergent treatment of adverse reactions associated with fluorouracil or capecitabine because it may diminish the efficacy of these drugs. (1)
• The safety and efficacy of VISTOGARD initiated more than 96 hours following the end of fluorouracil or capecitabine administration have not been established. (1)

Recommended Dosage

• Adults: 10 grams (1 packet) orally every 6 hours for 20 doses, without regard to meals. (2.1)
• Pediatric: 6.2 grams/m2 of body surface area (not to exceed 10 grams per dose) orally every 6 hours for 20 doses, without regard to meals. See the full prescribing information for body surface area-based dosing. (2.1)

Preparation and Administration

• Pediatric: Measure the dose using either a scale accurate to at least 0.1 gram, or a graduated teaspoon accurate to ¼ teaspoon. (2.1)
• Mix each VISTOGARD dose with 3 to 4 ounces of soft foods such as applesauce, pudding or yogurt and ingest within 30 minutes of mixing. Do not chew the VISTOGARD granules. Drink at least 4 ounces of water. (2.2)
• If a patient vomits within 2 hours of taking a dose of VISTOGARD, initiate another complete dose as soon as possible after the vomiting episode. Administer the next dose at the regularly scheduled time. (2.2)
• If a patient misses a dose at the scheduled time, administer that dose of VISTOGARD as soon as possible. Administer the next dose at the regularly scheduled time. (2.2)
• Administer VISTOGARD via a nasogastric tube (NG tube) or gastrostomy tube (G-Tube) when necessary (e.g., severe mucositis or coma). (2.2)