How should protein and sports nutrition brands market in the US?

Protein and sports nutrition buyers fall into a few distinct groups, and each one checks different things before buying. Competitive athletes check testing and ingredient safety. Gym regulars compare protein per serving, taste and value. Newer buyers, such as active older adults, want simple guidance. Your marketing should speak to one group at a time.

The main buyer groups

• Tested athletes: high school, college and professional athletes who face drug testing. One contaminated scoop can cost them a season, so they look for third-party testing for banned substances before anything else.
• Training enthusiasts: people who lift or train several times a week. They read labels closely, compare protein per serving and per dollar, and care about taste and mixability.
• Everyday active adults: people adding protein for convenience, often through ready-to-drink shakes or bars. They respond to taste, routine and simple explanations.
• Plant-based and sensitive buyers: people avoiding dairy or specific ingredients. They scan allergen statements and protein sources first.

What they look at before buying

Across groups, the pre-purchase checklist is consistent: grams of protein per serving, protein source, sweeteners and additives, testing or certification marks, taste reviews and price per serving. Many buyers read reviews and watch creator videos before trying a new tub. That makes a review program, honest comparison content and clear label photos more valuable than clever slogans.

This is insight for planning, not nutrition advice. Your job as the marketer is to make the information these buyers already want easy to find, accurate and consistent everywhere the product appears.

Two decisions shape almost every protein claim: whether the product is sold as a dietary supplement or a conventional food, and whether you make a protein content claim. Supplements use a Supplement Facts panel and can carry structure/function claims. Foods use a Nutrition Facts panel. Protein content claims trigger specific FDA math in both cases.

Supplement or food?

Protein powders, shakes and bars can be marketed either way. FDA's guidance on distinguishing liquid dietary supplements from beverages (January 2014) explains that labeling, product name, packaging, serving size and marketing language all signal which category a product belongs in. Marketing a drink as a refreshing everyday beverage while labeling it as a supplement can create a misbranding problem. Decide the category with your regulatory counsel before you write ads.

Protein content claims

Under 21 CFR 101.9(c)(7), a label that makes a protein claim must show a percent Daily Value for protein. That percentage uses the corrected amount of protein, adjusted by the protein digestibility-corrected amino acid score (PDCAAS). The Daily Reference Value for protein is 50 grams for adults and children 4 and older. Under 21 CFR 101.54, the terms below have defined thresholds.

Plant blends and some single-source proteins can score lower on PDCAAS, so a product with many grams per scoop may not qualify for "high protein" wording. Have your formulator confirm the corrected figure before the claim reaches packaging, ads or creator scripts.

Structure/function and performance claims

Supplements may describe effects on normal structure or function, such as supporting muscle recovery, if the claim is truthful and substantiated. The label must carry the FDA disclaimer, and the company must notify FDA no later than 30 days after first marketing the claim, under 21 CFR 101.93. Disease claims, including claims about the signs or symptoms of a disease, turn a supplement into an unapproved drug. Have your regulatory counsel sign off on final label and ad wording.

A protein product page should answer every label-reader question without a click: protein per serving and source, the full facts panel, allergens, sweeteners, testing status and taste notes. It should also make subscription terms obvious. Pages that hide the panel or bury testing details lose comparison shoppers to the next tab.

Product page checklist

1. Product name, format and flavor, with the claim language your counsel approved.
2. A readable image or text version of the full Supplement Facts or Nutrition Facts panel.
3. Protein source and, where you make a protein claim, the percent Daily Value shown on the label.
4. Allergen statement. Milk and soy are both major food allergens under FDA rules, and FDA states allergen labeling applies to dietary supplements.
5. Testing information: which batches were tested, for what, and how buyers can look up a lot number.
6. Mixing and serving directions that match the label.
7. The FDA disclaimer next to any structure/function claim, as the label requires.
8. Reviews collected under a fair process, with no filtering out of negative ones.
9. Subscription terms, price per delivery and a plain description of how to cancel.
10. FAQ blocks on taste, texture, digestion of ingredients such as sugar alcohols, and storage.

Write the page so AI assistants can quote it accurately. Short, factual answers about source, grams and testing are what ChatGPT, Gemini and AI Overviews tend to pull. Our guide on how supplement brands show up in AI search goes deeper.

Track repeat purchase and subscription health first, because protein is a replenishment product and profit comes from the second and third orders. Then track acquisition cost by channel, conversion on product pages, review volume and creator-driven sales. A 90-day plan should fix claims and pages before scaling spend.

KPIs that matter

A 90-day launch plan

1. Days 1 to 30, foundation: confirm the product category and protein claims with counsel, build a claims library, rewrite product pages, set up consent-based email and SMS capture, and audit tracking on checkout and quiz flows.
2. Days 31 to 60, trial: launch sampler offers, brief a small first group of creators or coaches with approved claims and disclosure rules, start search campaigns on comparison queries, and publish taste-test and label videos.
3. Days 61 to 90, scale: move budget to channels with the best payback, launch subscription and reorder flows, and review results every week against agreed goals.

Ichelon Consulting US runs Goals-Driven engagements: monthly goals agreed with you, tracked live on Ichelon Agency OS, with a report every Monday. Retainers start from $499/month, custom-scoped. See our supplement and D2C health brand marketing service, or book a call with the US team.