RXBAR Protein Bar: Protein, Calories & Labelgrade
Labelgrade: B+ 80 / 100 — Excellent protein density and ingredient quality (five whole-food ingredients, no isolates), with solid fiber and low sodium. The sugar score is the main critique — about 30g of sugar per 100g, all naturally-occurring from dates. We give the date-sugar penalty a 50% reduction since the source is whole food, but RXBARs are still a high-sugar food regardless of source.
The short answer
RXBAR is the cleanest mainstream protein bar by ingredient list — just dates, peanuts, egg whites, strawberries, and natural flavors per the USDA Branded Foods entry (USDA FDC 2432443). The USDA serving lists 7 g of protein and 130 calories, though most full-size retail bars list 12 g of protein and ~210 calories on the package. The Labelgrade is B+ (83 / 100) — the highest-scoring product we’ve graded so far, on the strength of excellent ingredient quality plus solid protein density at 21.2 g per 100 g.
Why this Labelgrade
| Dimension | Grade | Score | Why |
|---|---|---|---|
| Protein density | B+ | 82 / 100 | 21.2 g of protein per 100 g — excellent for a bar with no protein isolate. Beats most “natural” bar competitors and rivals many isolate-based bars |
| Ingredient quality | A- | 85 / 100 | Five whole-food ingredients, no whey isolate, no soy isolate, no sugar alcohols, no synthetic vitamins. The five-ingredient list is the brand’s entire marketing position |
| Protein per dollar | N/A | — | RXBARs typically retail at $2.00–$2.50 per bar; for the protein content, that’s higher per-gram cost than whey-isolate bars but lower than RX’s whole-food competitors |
| Overall | B+ | 83 / 100 | The cleanest mainstream bar option. If you want whole-food convenience protein, this is near the top of the category. Date sugar is the trade-off |
How it compares
| Product | Protein per bar | Protein density (per 100 g) | Notable trade-off |
|---|---|---|---|
| RXBAR (this product, USDA entry) | 7 g | 21.2 g | 10 g sugar from dates |
| Plain cooked chicken breast (benchmark) | ~31 g per 100 g | 31.0 g | Not convenient, not shelf-stable |
| Plain Greek yogurt (Fage Total 0%, 180 g) | 32 g | 18.0 g | Refrigerated, requires utensil |
We’ll expand this comparison as we ingest more protein bar brands. The fair comparison isn’t to chicken or yogurt — it’s to other shelf-stable, single-portion bars, where RXBAR’s whole-food formulation stands out.
Whole-food equivalent
The 7 g of protein in a USDA-listed RXBAR serving equals the protein in about 23 g of plain cooked chicken breast (under an ounce), or about 39 g of Fage Total 0% Greek yogurt (a small spoonful). The reason to choose the bar over either is convenience and shelf-stability, not protein density per se.
Scope
This page covers RXBAR Protein Bar as represented in USDA Branded Foods FDC 2432443 (UPC 859162007125). RXBAR sells multiple flavor SKUs and at least three bar sizes (the standard 1.83 oz / 52 g full bar, “minis” at 0.9 oz, and now multi-bar value packs) — the USDA entry’s per-serving numbers don’t match the per-bar numbers on the standard retail label, so always cross-check against the actual package you have. Date sugar content varies slightly by flavor. The protein-density and ingredient-quality grades apply across the lineup; absolute per-bar protein varies by SKU.
Ingredients (from the USDA Branded Foods entry)
Dates, peanuts, egg whites, strawberries, natural flavors.
| Nutrient | Per Serving (1 bar) |
|---|---|
| Calories | 130 |
| Protein | 7g |
| Total Fat | 4g |
| Saturated Fat | 0.5g |
| Trans Fat | 0g |
| Total Carbohydrates | 16g |
| Dietary Fiber | 3g |
| Total Sugars | 10g |
| Sodium | 65mg |
| Cholesterol | 0mg |
| Calcium | 30mg |
| Iron | 0mg |
| Potassium | 310mg |
Where to buy
Links below are affiliate links. Buying through them may earn Labelgrade a commission at no extra cost to you. See our affiliate disclosure. The Labelgrade score is not affected by affiliate relationships — see methodology.
Search links are convenience links that may not land on the exact product variant we covered. Always verify the package label (size, UPC) before purchasing.
Frequently Asked Questions
How much protein is in an RXBAR?
7 grams of protein per bar at the USDA-listed serving (USDA FDC 2432443). Note: most flavors sold at retail are larger bars listing 12 g of protein on the label — this USDA entry appears to reference a smaller-format SKU. Always check the actual package label.
What's in an RXBAR?
Just five ingredients per USDA: dates, peanuts, egg whites, strawberries, and natural flavors. Egg whites are the primary protein source — no whey isolate, no soy isolate, no protein concentrate.
How many calories per bar?
130 calories per USDA-listed serving. Most retail RXBARs run 200–220 calories per full bar.
Does RXBAR have added sugar?
No added sugar is listed in the USDA entry — the 10 g of sugars per bar are naturally-occurring from the dates. RXBAR markets this prominently ('no added sugar').
Is RXBAR gluten-free?
Yes — none of the listed USDA ingredients contain gluten, and RXBAR labels their bars gluten-free.
Are RXBARs a good source of protein under FDA rules?
At 7 g per bar, RXBAR is below the FDA's 10% Daily Value threshold (5 g) by serving but just under the 20% 'high in protein' threshold (10 g). Most retail RXBAR variants list 12 g and would qualify as 'high in protein'.
How does the ingredient list compare to typical protein bars?
Dramatically shorter. A typical Quest or Pure Protein bar has 25–35 ingredients including whey protein isolate, sugar alcohols, soluble corn fiber, and synthetic vitamins. RXBAR has 5 ingredients, all recognizable as whole foods.
Sources
- USDA · ID 2432443 · accessed 2026-05-27
- MANUFACTURER · accessed 2026-05-27
Last verified: 2026-05-27