What protein coffee is
Protein coffee, sometimes called "proffee," is coffee with added protein, usually from a scoop of protein powder or a ready-to-drink protein shake. People like it because it turns a morning coffee into something closer to breakfast.
It's not magic. It's just coffee plus protein. Whether it's a good idea for you depends on what else you eat, what powder you use, and how much coffee you're already drinking.
How to make protein coffee without clumps
Protein powder tends to clump in hot liquid. A few methods fix that.
Method 1: Make a paste first (hot coffee)
- Put a scoop of protein powder in your mug.
- Add a splash of cold milk or water and stir until it's a smooth paste.
- Slowly pour in your coffee while stirring.
This is the simplest fix, and it works with a spoon.
Method 2: Blend or froth it
- Brew your coffee and let it cool for a minute or two.
- Add it to a blender with the powder, or use a handheld milk frother right in the mug.
- Blend or froth until smooth and foamy.
Be careful blending hot liquid. Use a blender made for it, start on low, and vent the lid.
Method 3: Iced protein coffee
- Shake the powder with cold milk or water in a shaker bottle.
- Pour it over ice.
- Add cold brew or cooled coffee.
Cold liquid mixes more smoothly, so iced is the most forgiving version.
Method 4: Use a ready-to-drink shake as creamer
Pour a ready-to-drink protein shake into your coffee instead of milk or creamer. No mixing needed. Check the label for added sugar.
Protein coffee without powder
You don't need a supplement to add protein to coffee. MedlinePlus lists low-fat dairy as a good protein source, so a latte made with milk already adds some protein. Soy milk is another option.
You can also skip the coffee add-in and put the protein next to it: Greek yogurt, eggs or cottage cheese with your morning coffee. Our Greek yogurt protein ideas and cottage cheese ideas have easy breakfasts.
If protein coffee is part of a bigger effort to eat more steadily, a health companion app can help. Olive checks in with you every day, looks at what you eat, and helps you build small habits that actually hold. It doesn't diagnose or treat anything.
What to know before you buy a protein powder
It's a supplement, not a food the FDA approves
Harvard Health Publishing notes that protein powder is a dietary supplement, and the FDA leaves it to manufacturers to evaluate the safety and labeling of their products. The NIH Office of Dietary Supplements explains the difference: medicines must be approved by the FDA before they can be sold, but supplements don't need that approval. The FDA's dietary supplement page adds that it can act against adulterated or misbranded products after they reach the market.
That means you can't be sure a powder contains exactly what the label says.
Some powders contain heavy metals
Consumer Reports tested protein powders and shakes in 2025 for lead. It found that the average lead level was higher than when it last tested 15 years earlier, and fewer products had undetectable amounts.
Plant-based products had the most lead: on average about nine times the amount in dairy-based powders and twice that of beef-based ones. Dairy-based products generally had the lowest amounts, but Consumer Reports still advised against daily use for half of the ones it tested. Its experts also said there's no reason to panic if you've been using one of these products.
Harvard Health also points to a 2025 report from the nonprofit Clean Label Project, which screened 134 protein powders and found that many contained heavy metals, BPA, pesticides or other contaminants.
How to choose a cleaner powder
- Look for a third-party seal. The NIH Office of Dietary Supplements says seals from groups like U.S. Pharmacopeia, NSF International and ConsumerLab.com indicate a product was properly made, contains what's listed, and doesn't have harmful levels of contaminants. The seals don't guarantee a product is safe or effective.
- Check test results. Consumer Reports and Clean Label Project publish their results online.
- Read the sugar line. Harvard Health says some powders have as much as 23 grams of added sugar per scoop. The American Heart Association recommends no more than 24 grams of added sugar a day for women and 36 grams for men.
- Think about dairy. Harvard Health notes that milk-based powders can upset the stomach in people with dairy allergies or trouble digesting lactose.
- Tell your health care provider. The NIH Office of Dietary Supplements suggests telling your providers about any supplements you take.
Watch the caffeine
Adding protein doesn't change how much caffeine is in your cup. The FDA says that for healthy adults, 400 milligrams a day, about two to three 12-ounce cups of coffee, is an amount not generally associated with negative effects. It adds that people vary widely in how sensitive they are to caffeine, and that some conditions and medicines can make you more sensitive. If you're pregnant, trying to get pregnant or breastfeeding, the FDA suggests asking your health care provider about caffeine.
If protein coffee makes you drink more coffee than usual, count it.
How much protein do you need?
MedlinePlus says protein should make up 10% to 35% of your daily calories. Harvard Health cites the Recommended Dietary Allowance of 46 grams a day for women and 56 grams for men. Harvard Health says most people can get plenty of protein from ordinary foods and drinks. Its examples include an egg at breakfast (6 grams), 6 ounces of plain Greek yogurt (18 grams), a handful of nuts (4 to 7 grams) and a cup of milk (8 grams). It also suggests athletes and people with health issues talk with their care team about their needs. So protein coffee is a convenience, not a requirement.
If you're using protein coffee to feel fuller through the morning, our guide to food noise covers other ways to manage constant food thoughts.
Frequently asked questions
Can you put protein powder in hot coffee?
Yes, but it may clump. Mix the powder with a little cold milk or water first, then stir in the coffee, or use a blender or frother.
Why does protein powder clump in coffee?
Hot liquid makes many powders clump instead of dissolving. Making a paste with a little cold liquid first, letting the coffee cool a minute, or using a frother usually fixes it.
Is protein coffee healthy?
It can fit a healthy diet. Choose a powder with a third-party seal, keep added sugar low, and keep total caffeine in check.
What protein powder is best for coffee?
Unflavored or coffee-friendly flavors mix in most easily. For quality, look for a seal from U.S. Pharmacopeia, NSF International or ConsumerLab.com.
Are protein powders safe?
Most people can use them, but they're supplements that aren't approved before sale, and Consumer Reports found concerning lead levels in some, especially plant-based ones.
Can I make protein coffee without powder?
Yes. Use milk or soy milk in your coffee, or pair your coffee with Greek yogurt, eggs or cottage cheese.
Make breakfast a steadier habit
Protein coffee is one easy way to make mornings more filling. Olive checks in with you every day and helps you build small habits that actually hold.
This guide is general information, not medical advice. Talk with your health care provider before adding supplements, especially if you're pregnant, have a health condition or take medicine.