Ensure Plus is a calorie-dense nutritional shake designed for people who need to gain weight or maintain their weight when eating enough solid food is difficult. Each 8 fl oz serving packs 350 calories and 16 grams of protein, along with 27 essential vitamins and minerals. That calorie density in a small, drinkable format is the core reason doctors and dietitians recommend it.
Who Benefits Most From Ensure Plus
The people who get the most out of Ensure Plus generally fall into a few overlapping groups. Older adults are one of the largest, because aging often brings a cluster of problems that make eating harder: poor appetite, difficulty chewing, dry mouth, and a declining sense of smell that makes food less appealing. When someone consistently eats too little, malnutrition and unintended weight loss follow quickly, especially in people over 65. A small, flavored shake with a high calorie count is far easier to finish than a full meal.
People recovering from surgery or serious illness also use Ensure Plus. After a hospital stay, calorie and protein needs spike at the same time appetite drops. Cancer patients undergoing treatment face a similar challenge, as nausea, mouth sores, and fatigue can make solid food unappealing or painful to eat. Digestive disorders like Crohn’s disease or conditions that cause chronic nausea can create the same gap between what your body needs and what you can tolerate eating.
It also shows up in care plans for people with eating disorders or anyone whose weight has dropped to a medically concerning level. In these situations, the goal is straightforward: get a meaningful number of calories and nutrients into the body through something the person can actually consume.
Weight Gain and Calorie Density
The defining feature of Ensure Plus is how many calories it delivers per ounce. At 350 calories in just 8 fluid ounces, it is significantly more calorie-dense than standard Ensure Original. That matters when someone physically cannot eat large volumes of food. Drinking two servings a day adds 700 calories on top of whatever meals you manage, which can be enough to shift the balance from losing weight to gaining it.
For context, gaining about one pound per week requires roughly 500 extra calories per day beyond what your body burns. A single bottle of Ensure Plus covers most of that surplus, and two bottles exceed it. This makes it practical for people who need steady, predictable weight gain without forcing themselves through meals they can’t finish.
Protein and Muscle Support
Each serving provides 16 grams of protein, which supports muscle repair and helps slow the loss of lean muscle mass. This is particularly relevant for older adults dealing with sarcopenia, the gradual loss of muscle that accelerates after age 60. Muscle loss contributes to falls, fractures, and a general decline in independence, so maintaining protein intake is a priority in geriatric nutrition.
Abbott, the company behind Ensure, also makes a version called Ensure Plus Advance in some markets that includes 20 grams of protein per serving plus a compound called HMB, a natural byproduct of the amino acid leucine that plays a role in muscle building. That version is specifically marketed for people at risk of muscle loss. The standard Ensure Plus sold in the United States does not include HMB, but its 16 grams of protein still contribute meaningfully to daily protein targets when combined with food.
What It Contains Beyond Calories
Ensure Plus is not just empty calories. The 27 vitamins and minerals cover a broad spectrum of daily nutritional needs, including vitamins A, C, D, E, K, and a full range of B vitamins, plus minerals like calcium, iron, and zinc. For someone who is eating very little solid food, this helps prevent the specific nutrient deficiencies that develop when overall intake drops. Vitamin D and calcium are especially important for older adults at risk of bone loss, and B vitamins support energy metabolism.
The shake is gluten-free and suitable for people with lactose intolerance, which removes two common barriers for people with sensitive digestive systems. It comes in five flavors: Vanilla, Milk Chocolate, Dark Chocolate, Strawberry, and Butter Pecan.
Who Should Avoid Ensure Plus
Ensure Plus is not a good fit for everyone. People with diabetes should be cautious, as the sugar content is significant. Abbott, the manufacturer, states directly that standard Ensure products are not suitable for people with diabetes. Their Glucerna line is designed for blood sugar management instead. If you have diabetes and need a calorie-dense supplement, Glucerna or a similar product formulated with slower-digesting carbohydrates is a better choice.
It is also not intended as a meal replacement for healthy adults who eat normally. The calorie density that makes it valuable for underweight or malnourished individuals can contribute to unwanted weight gain if someone adds it on top of an already adequate diet. And while it provides a useful nutritional safety net, it does not replicate the full range of fiber, phytonutrients, and other compounds found in whole foods.
How People Typically Use It
Most people drink Ensure Plus as a supplement between meals rather than as a replacement for meals entirely. Having one bottle mid-morning and another in the afternoon is a common pattern, especially for older adults whose appetite peaks at certain times of day. Chilling the shake or pouring it over ice improves the taste for many people, and some blend it with fruit or peanut butter to add even more calories when needed.
In clinical and home care settings, the general recommendation is one to two servings per day, though your specific needs depend on how much you are eating from other sources and what your calorie and protein targets are. Caregivers often find it useful because it requires no preparation and can be consumed in a few minutes, even by someone who is fatigued or has limited mobility.