The buzz around protein coffee has surged recently, thanks to Starbucks launching its protein-infused drink collection. But experts say the protein coffee trend is showing larger overall shifts, as consumers seek functional beverages that do more than just taste good.
According to Rachel Baker, MS, RD, CSSD, LDN, and Manager of Nutrition Content and Services at GNC, consumers want drinks that can support fitness, energy, and overall health goals. Here’s why she recommends adding protein to your morning coffee as a super easy and convenient way to get some extra protein into your day.
Why add protein to your morning coffee: Protein coffee benefits
“Protein slows digestion, which helps sustain energy and keeps you feeling full longer. When combined with caffeine, it creates a powerful combination. Caffeine boosts alertness, and protein stabilizes blood sugar — preventing energy crashes. Pairing the two together can help moderate the blood sugar spike that typically happens when you consume carbs or sugar on their own,” says Baker.
In addition to helping you feel full and regulate blood sugar, adding protein to your morning coffee can also:
- Support muscle maintenance and growth
- Enhance satiety, helping curb mid-morning cravings
- Aid post-workout recovery
- Serve as a more nutrient-dense alternative to sugary lattes
How to add protein to coffee
One of the easiest ways to add protein to coffee is by using powdered whey protein.
“Whey protein pairs especially well with coffee, thanks to its complete amino acid profile and smooth texture – it dissolves easily and supports muscle recovery. Collagen is another popular option – I add collagen to my coffee daily for skin health and joint benefits. It blends seamlessly into hot liquids and is a super-easy routine to follow. Plant-based proteins can also work – but aren’t an option at trendy coffee shops,” says Baker.
When choosing a protein powder or ready-made protein option, Baker recommends looking for clean labels with high-quality protein sources like milk proteins, whey isolate, plant blends, or collagen. “Steer clear of products with excessive sugar or unrecognizable additives. Bonus points for third-party testing or certifications.”
When to combine protein and coffee
“One common myth is that caffeine can interfere with protein absorption – but research shows this effect is minimal and not a concern for most people. Another misconception is that combining the two is only for athletes, when in reality, everyone can benefit from protein,” says Baker.
For the general coffee drinker, Baker recommends adding about 15 to 20 grams of protein to your coffee to support muscle maintenance, satiety, and energy without overpowering the taste of your cup (because your coffee still needs to taste good). “This amount blends well, tastes great, and helps to kickstart your day with balanced nutrition,” she says.
When not to use protein & coffee together
While most people can enjoy protein and coffee together, it’s not always a great choice for those with digestive concerns.
“If your stomach is sensitive, having coffee and protein right before a workout may feel a bit heavy,” Baker warns. “Try a light snack, like a granola bar, or coffee on its own, then refuel with protein after. Some folks find that coffee alone can be harsh first thing in the morning, and adding protein might not help if digestion is sluggish. Try pairing your protein coffee with a small carb, like a banana or toast, to ease things in.”
Protein and coffee also shouldn’t be paired late at night. “If you’re looking for your daily dose of protein and it’s 8 pm, that’s too close to bedtime to be pairing it with caffeine. Save your protein coffee for the morning or early afternoon,” she says.
