CommunityFood & Appetite

Protein Shakes and Bars?

25 replies21 peopleApr 16, 2026☆ Follow
Summary

Are protein shakes and bars okay as meal replacements on GLP-1 or similar meds?

Participants view shakes and bars as convenient tools for meeting protein targets amid strong appetite suppression, with most calling them fine in moderation if sugar stays low. Several stress that whole foods should form the base of the diet and warn that very low calories from these items alone can risk muscle loss or nutrient gaps. A few note they work well for curbing cravings or as quick options when real meals are not feasible.

What this discussion establishesWhere people disagree

Whether shakes and bars count as real food or should be limited in favor of whole foods only

Still open

How much muscle loss occurs at different calorie levels or what exact macro split works best long term

Nothing here is advice.

25 replies · 21 people
KeenKettle43archiveopening postApr 16

What do people think about protein drinks in general? I switch between a few different ones with 23 to 42 grams of protein and also alternate a couple of bars. They end up replacing meals because the medication leaves me too full to eat much afterward. I wonder if the calories and protein from them are neutral or even a negative, or if they are basically fine. I stopped drinking soda but these still feel like having a candy bar or milkshake, so it is hard to tell if the roughly 160 calories are truly okay.

CopperBeacon48archiveApr 16

Check that the sugar stays low because many of these products load it in. Look for something like classic whey protein instead.

CopperTimber28archiveApr 16

For me I pick either a drink with 30 grams or a bar with 20 grams at least once a day. It helps me reach my total protein goal on days when eating enough food feels tough. The medication really cuts appetite so these items make it easier.

WarmAlder42archiveApr 16

I keep shakes in the fridge and bars in the cupboard all the time. I grab the drinks from a big-box store and like the bars because they taste like candy. I also keep some protein chips around when I want something crunchy.

KeenPebble33archiveApr 16

They work okay but they are not actual food. I relied on them a lot in the past and appreciated how easy the shakes were. The bars never satisfied me much and I would eat several at once. Now that I work from home I like making my own smoothies with whey and frozen fruit or greens instead.

WarmAlder42archiveApr 16

Real food is better of course, but it is handy to have a cold shake ready when I am busy or tired and a proper meal is hours away. At only 160 calories it feels worth it. I also like the bars that do not fill me up as a dessert and can use part of my daily calories to add more protein at night.

PlainQuill53archiveApr 16

They are fine and if they help with cravings that is a plus. The ready-to-drink versions cost more, so a tub of whey powder is cheaper if money matters, though it will not taste the same. The bigger question is the rest of what you eat. Are you getting enough vitamins and minerals, or would a more complete meal replacement be better to cover those needs?

WarmAlder42archiveApr 16

My overall diet is already solid. The shakes and bars are not every day because the ready versions are not cheap even on sale, but having them a few times a week lets me add protein without overdoing it.

PlainAlder11archiveApr 16

I mix whey protein powder, collagen peptides, and oat bran with water for lunch every day.

LevelTimber64archiveApr 16

Keep sugar low. Some brands are decent choices. I aim for whole foods most of the time but still add protein powder to things like parfaits or baked goods when I can. A multivitamin helps too.

PlainAnchor67archiveApr 16

I buy the store brand version that has 32 grams of protein and 160 calories.

GreenMeadow54archiveApr 16

In general they are completely fine and the ones you listed are all good quality. Some other bars and drinks are junk but these are solid. The real issue is total calories and macros. These options are low calorie so if they replace meals you might not be eating enough overall. Very large deficits can mean losing a lot of muscle along with fat. One or two pounds a week is better unless you have hundreds of pounds to lose. You still need some fat and carbs plus other nutrients, and these products are low on those. I aim for roughly half protein and a quarter each of carbs and fat.

BlueKettle89archiveApr 17

Big-box store versions of the drinks and bars are both excellent and cheap especially on sale.

KeenKettle43archiveApr 17
↳ replying to @PlainAlder11

How has the collagen peptide been working for you? Do you also take that other compound sometimes?

PatientFenwick91archiveApr 17

It is a very convenient way to hit your protein numbers. Base the diet on real food and use shakes, not bars, to fill the gaps. Two servings can give 50 grams of protein for only 200 calories. Casein at night digests slower and helps with recovery. I prefer clear whey because I do not tolerate lactose well and do not like milky textures. Protein from whole food is still best because it brings micronutrients along with it.

IronLantern24archiveApr 17

I mostly use ready-made shakes to mix collagen and creatine into. Sometimes I drink another brand plain if I have not eaten enough. I never eat bars because I dislike the texture. I have been trying to get more protein from plant sources to lower fat intake a bit and might go back to almond milk or add beans again.

SharpCinder28archiveApr 17
↳ replying to @IronLantern24

Two words: fast food place. I add black beans to everything I order there.

SlowLantern45archiveApr 17

I use a plant-based shake brand but have not found any bar with low sugar that tastes good to me. It does not help that I dislike peanut butter and many bars include it.

PlainAlder11archiveApr 17
↳ replying to @KeenKettle43

I have been taking the collagen for a long time, even before starting the diet and medication. My wife got me started on it. I have no idea what the second thing is. I have not had that fast food in twenty years and avoid all of it.

BrightSparrow63archiveApr 17

What matters most is how complete and usable the protein is, not the source. About 60 of my 200 grams daily comes from shakes and I have lost around 50 pounds in five months with almost no strength loss. The only medication I take is the one mentioned. The only change I notice is being able to bench less reps, but that is expected after dropping from 215 to 165 pounds.

GreyCompass75archiveApr 17
↳ replying to @KeenKettle43 (opening post)

They are fine and count as real food. I am tired of the constant push to eat only whole foods. You could get all your protein from shakes and be perfectly okay. A big bowl of vegetables plus a shake sounds good to me.

PatientHarbour23archiveApr 17

Supplements do the job and I use plenty of them to reach my numbers without adding many extra calories or carbs. I keep a large stock at home. I like premade shakes that stay at or under 160 calories and deliver 30 grams or more of protein. For bars I am strict: they must have at least as many grams of protein as total carbs or they are basically candy, and I prefer ones with two grams of protein per ten calories. I cut them up and stir into yogurt or cottage cheese mixed with powder. Among powders I go through a lot of one particular flavor.

WarmLedger35archiveApr 18

A basic whey powder works well if you want something that mixes easily.

SteadyQuill18archiveApr 18

I use both shakes and bars. As long as the bars are not chewy they make a good swap for chocolate or other sweets.

PlainAnchor84archiveApr 18

I bought a few large tubs of a whey powder because I liked the ready version from stores. The powder itself I dislike. It takes two big scoops to reach 32 grams of protein, feels chalky, and sometimes sits heavy in my stomach. I will finish what I have and then switch back to another brand I prefer that mixes smooth and tastes better.

PlainAlder11archiveApr 18

There is a brand of cereal some of my lifting friends eat. They might also make powders for drinks.

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