Understanding IDDSI and Enteral Feeding

For anyone using tube feeding, especially blenderized foods (BFs), the consistency of what goes into the feeding tube matters. The International Dysphagia Diet Standardization Initiative (IDDSI) provides a global standard that helps ensure safety, predictability, and better feeding outcomes.

This article breaks down what IDDSI is, why it matters in tube feeding, and what to consider when using enteral pumps such as the Moog Infinity® pump.

What is IDDSI?

The IDDSI Framework is an internationally recognized system that classifies foods and liquids into Levels 0–7, based on texture, thickness, and particle size.

• Levels 0–4 describe liquids (from thin to extremely thick).
• Levels 3–7 describe foods (from liquidized to regular solids).

IDDSI also includes standardized testing methods, such as the IDDSI Flow Test, which uses a syringe to measure how fast a liquid flows. This helps caregivers and clinicians determine whether a blenderized formula is thin, mildly thick, or very thick before putting it through a feeding tube.

Why IDDSI matters for tube feeding

Tube feeding, especially when using blenderized foods, depends heavily on viscosity (thickness). Pumps, feeding sets, and feeding tubes all have limitations.

Using IDDSI levels provides a standard language so caregivers, dietitians, and clinicians can make sure that the formula used is both nutritionally appropriate and safe for the feeding equipment.

Blenderized Foods (BFs) & IDDSI
Blenderized tube feeding, either homemade or commercial, is becoming more common, and many families prefer it because it aligns with whole food nutrition. But BFs vary widely in thickness. This can affect:

• Whether the pump can deliver the formula
• The risk of tube clogs
• Pump accuracy and alarms

The IDDSI scale helps identify whether a BF is appropriate for pump use, and at what level of thickness.

Best practices when using blenderized foods with a feeding pump

1. Use ONLY commercially available pre-packed or commercially prepared feeding solutions formulated for use with a feeding pump that are prescribed by a licensed health care provider or dietitian.
2. Review and follow commercially available blenderized food formula manufacturers guidelines.

Learn more by visiting the IDDSI website.

Moog has also created an infographic that provides further insight on how blenderized, food-based formulas can impact enteral pump performance. Learn more at Feeding Blenderized Food with Enteral Feeding Pumps.