Fluid diet - elemental
This document is part of the ACI Diet Specifications for Adult Inpatients. It is not to be used for patient education.
Aim
To provide a diet with nutrients as small molecular weight compounds, i.e. proteins as amino acids or peptides, carbohydrates as oligosaccharides or monosaccharides, and fats as medium-chain triglycerides.
Characteristics
All nutrition provided by commercial elemental liquid oral nutrition supplements.
Indications
Consider for patients with gastrointestinal diseases such as Crohn’s disease or ulcerative colitis.
This diet should only be used under dietetic supervision.
Nutritional adequacy
Palatability of the elemental nutritional supplements may limit a patient's ability to meet their energy needs. Exclusive extended use of elemental formulas can result in essential fatty acid deficiency.
Precautions
Variety and choice are severely limited in this diet.
Paediatrics
Suitable for use in paediatrics.
Specific menu planning guidelines
| Allowed | Not allowed | |
|---|---|---|
| Hot main dishes | Nil | All |
| Sauces, gravies | Nil | All |
| Starchy vegetables / pasta / rice | Nil | All |
| Vegetables | Nil | All |
| Soups | Nil | All |
| Sandwiches | Nil | All |
| Salads, dressings | Nil | All |
| Breads, cereals | Nil | All |
| Spreads | Nil | All |
| Hot breakfast choices | Nil | All |
| Fruit | Nil | All |
| Yoghurt | Nil | All |
| Desserts | Nil | All |
| Milk and cheese | Nil | All |
| Beverages | Water | All others |
| Biscuits | Nil | All |
| Miscellaneous | Sugar Plain boiled sweets Commercial liquid oral elemental nutrition supplements | All others |
| Celebratory foods, special occasions | Nil | All |
Change log
| Change date | Section updated | Change |
|---|---|---|
| August 2026 | General language | Updated to be consistent with ACI style writing guide |
| Characteristics | Updated to require dietetic supervision | |
| Indications | Updated | |
| Nutritional adequacy | Updated to reduce ambiguity | |
| Paediatrics | Removed reference to combining with an age-appropriate diet | |
| References | Removed |