What is the recommended water flush volume between medications via enteral tube?

• A. 5 mL
• B. 15-30 mL
• C. 60 mL
• D. 100 mL

Answer: (B)

Flushing with water between medications via an enteral tube helps clear the tube of residual drug, prevent interactions or clogging, and keep the tube patent. The 15–30 mL range is enough to push the preceding medication through and clear residuals without adding excessive fluid. Too small a volume, like 5 mL, may not prevent occlusion; too large a volume, such as 60–100 mL, can risk fluid overload or dilution of feeds, especially in patients with fluid restrictions. Therefore, 15–30 mL between meds provides a safe, effective balance for most adult patients.