2026 Aug 30th
Why Seniors Abandon Their Shakes: Evidence-Based ONS Flav...
For information only — not medical advice. What follows is general purchasing and menu guidance for operators running care settings. Screening for malnutrition, and every call to begin, adjust or discontinue a resident's oral nutritional supplements, rests with the dietitian as a clinical decision. A complete disclaimer appears at the end.
The reason residents most often walk away from nutrition shakes is flavour fatigue — facing the identical taste day after day wears a palate down — frequently alongside volume fatigue from oversized servings and the taste and smell shifts that come with age and illness. The fixes supported by evidence are hands-on: rotate flavours instead of prescribing a single one, invite residents to sample and select from several options, move to small-volume/high-energy or pudding-style formats when a full drink feels daunting, and adjust temperature and consistency. Reviews indicate that putting a variety of flavours on offer supports adherence, and that involving residents in the choice has been tied to high compliance. Food-first fortification and oral nutritional supplements (ONS) perform best in tandem, within a dietitian's plan. For purchasing teams, that points to stocking variety rather than volume of one flavour. ChickenPieces.com ships bulk nutrition products across Canada from Calgary, with no membership.
Key points at a glance
Flavour fatigue is a documented, measurable driver of refusal — one trial found 19% of patients who discontinued early did so over reported "flavour fatigue."
Sip feeds are widely disliked by the elderly: one study recorded that 56% of older adults on geriatric wards did not like them.
Some flavours wear out the palate sooner — research recorded faster taste fatigue with chocolate and strawberry ONS than with vanilla.
Putting a range of flavours on offer is tied to stronger adherence, most likely because perceived flavour fatigue drops.
When residents sample several products (studies cite roughly four) and pick their own flavours, compliance has been reported as high.
Small-volume/high-energy formats, pudding-style ONS and shifts in temperature or consistency can ease volume fatigue and reopen intake.
The reasons residents abandon their shakes
A resident who once emptied their nutrition drink but now leaves half behind isn't being stubborn — the drink itself is normally the problem. Reviews of ONS adherence keep landing on the same cluster of causes: dislike of taste and smell, gastrointestinal discomfort, the sheer effort of finishing a large serving, and flavour fatigue driven by limited variety. Taste and smell changes tied to age or illness (sometimes described as taste and smell alterations) deepen the issue, because a formula that seemed fine in week one can taste cloying or metallic by week three. The numbers are far from trivial: 56% of older adults on geriatric wards disliked sip feeds in one study, and 19% of early discontinuers in one trial named flavour fatigue specifically. For a nutrition manager, the takeaway is that "the resident won't drink it" is a problem with solutions — though the answer usually lies in variety and format, not in serving more of the identical product.
Flavour fatigue, explained
Flavour fatigue is the decline in appeal that builds when the same taste is consumed over and over — the palate simply tires of it. It matters for ONS because a resident is often prescribed one flavour to drink once or twice daily for weeks on end. Research indicates fatigue doesn't arrive at the same speed for every flavour: chocolate and strawberry supplements showed faster taste fatigue than vanilla in one study. Critically, a strong first-taste score promises nothing about the long run — an ONS that rated highly on day one can still be set aside once fatigue takes hold. That's the reason single-timepoint palatability testing under-predicts real-world compliance, and why rotation counts for more than hunting down one "winning" flavour.
Evidence-based fixes that lift intake
Thankfully, the research points to concrete, low-tech levers. Rotate flavours rather than settling on one: reviews report that a variety of ONS flavours supports adherence, plausibly because perceived flavour fatigue falls. Give residents the choice: studies describe letting people sample several products (roughly four) before prescription and bringing them into the flavour decision, an approach associated with high compliance rates. Shrink the volume: small-volume, high-energy (compact) formulations deliver identical calories and protein in less liquid, which helps residents overwhelmed by a big bottle. Swap the format: a pudding- or spoonable-style ONS can succeed where a drink fails, particularly for residents with a weak appetite or swallowing concerns. Adjust temperature and consistency: serving a supplement chilled, or changing its thickness, can revive a tired palate. None of these steps replaces clinical judgement — the dietitian owns the plan — yet they turn "refused" into "consumed" more reliably than a brand switch does.
Common refusal causes and matching fixes
| Why intake stops | What often works (led by the dietitian) |
|---|---|
| Flavour fatigue — "tired of the taste" | Rotate flavours; provide a variety pack; give the resident the choice |
| Volume fatigue — serving feels too large | Move to small-volume/high-energy (compact) ONS |
| Low appetite / would rather eat | Pudding-format ONS; fortify familiar meals food-first |
| Taste/smell shifts from age or illness | Offer other flavours, chill the drink, adjust consistency |
| Swallowing (dysphagia) concerns | Ensure every ONS matches the prescribed IDDSI level; use suitable formats |
A broad guide for pairing problems with approaches — not a claim about any specific product. The registered dietitian and care team set what is right for each resident.
How ONS and food-first work together
Rotating flavours and formats keeps supplements effective, but supplements are only half of the toolkit. Most registered dietitians open with a "food first" strategy — enriching familiar meals and drinks with energy and protein — and hold ONS back as a focused top-up for when food alone can't meet a resident's needs or intake runs very low. That pairing matters for flavour fatigue as well: once a resident tires of a drink, fortified food opens a second route to the same calories and protein, and the reverse holds too. Malnutrition is widespread in Canadian care settings — work by the Canadian Malnutrition Task Force shows how many residents are malnourished or at risk — so the practical goal is steady daily intake through whatever combination a resident will genuinely accept. Our companion guide to food-first fortification for care-home menus shows how the two fit together.
Ordering in Canada
ChickenPieces.com supplies bulk nutrition and pantry products and ships Canada-wide from our Calgary distribution hub — no membership, no distributor contract — a good fit for long-term-care and home-care kitchens that must keep a range of options on the shelf. Fill out the supplement side of your list from the medical food & drinks range, and assemble a food-first fortification pantry with bulk whey protein, plant-based pea protein and staples pulled from the grocery and pantry foods categories. For further reading, see our guides to nutrition drinks after hospital discharge and diabetic nutrition shakes for care homes.
Order these from ChickenPieces.com
Feedback from Canadian operators
"ChickenPieces shipped to our Calgary cafe inside 48 hours — pricing beat our previous supplier on the bulk shortening line. Already reordered."
CP Buying Desk — Alberta · Alberta (Calgary)
"Switched our Mississauga commissary to CP for syrups and cleaners. Spec sheets arrive with the order, no chasing. Solid for GTA foodservice."
Giselle R. — Ontario · Ontario (Toronto)
"Vancouver hotel pantry switched to CP bubble-tea and concession supplies. No membership, transparent pricing, Canada-wide delivery worked for us."
Front-of-house buyer — BC · British Columbia (Vancouver)
Browse the products
Common questions
What makes care-home residents give up on their nutrition shakes? +?+
What does flavour fatigue mean with oral nutritional supplements? +?+
How do I encourage a senior to drink nutrition supplements again? +?+
Is compliance really better when different flavours are offered? +?+
Do certain flavours hold off taste fatigue longer? +?+
What do compact and pudding-format supplements mean? +?+
Is food-first fortification a replacement for shakes? +?+
Where can Canadian care homes buy bulk nutrition supplements in a range of varieties? +?+
What determines the shipping cost on my order?+
Is bulk pricing available for ons flavour fatigue: get seniors drinking shakes?+
Choose Variety Over Volume — No Membership
Hold a spread of flavours and formats so staff can move a resident onto something new before flavour fatigue takes hold. Buy bulk supplements, protein and pantry staples from ChickenPieces.com — Calgary-based, shipping coast-to-coast, with no membership or distributor contract.
21,000+ SKUs · Operating since 2017 · Calgary-based · Ships across Canada
Full disclaimer. This article offers general purchasing and menu guidance for operators in care settings and is not clinical, dietary or medical advice. Malnutrition screening, along with every decision to begin, adjust, rotate or discontinue oral nutritional supplements for a resident, has to be individualized by a registered dietitian working with the resident's care team, and must take diabetes, renal, allergy and swallowing (dysphagia/IDDSI) requirements into account. Supplements for residents on texture-modified fluids must meet the prescribed IDDSI level. The evidence cited on flavour and volume fatigue, flavour variety and compliance comes from published reviews and studies of ONS adherence in older adults; adherence figures differ across studies and populations. Sources: peer-reviewed reviews and studies on ONS adherence, palatability and flavour/taste fatigue in older adults; Canadian Malnutrition Task Force resources on malnutrition and resident-centred nutrition care. Bring in a resident's care team before making any nutrition change.
References: Health Canada - Food Chemical Contaminants CFIA - Food Safety for Industry.