Ingredient Report

10
Ingredients
3
Additives
Milk

Ingredient List

Dairy
Milk protein isolate

Skim cow milk

Dairy
Whey protein isolate

Cow's milk whey

Fibers
Tapioca fiber

Cassava root starch

Nuts & Seeds
Peanut Butter

Peanuts

Additive
Erythritol

Corn or wheat starch

Plant Proteins
Peanut flour

Peanuts (Arachis hypogaea)

Fats & Oils
Cocoa butter

Cocoa beans

Additive
Sunflower lecithin

Sunflower seeds

Cocoa & Chocolate
Chocolate

Cacao beans

Additive
Stevia extract [Reb A]

Stevia leaves

Complete Ingredient Details

Milk protein isolate

A very high-protein dairy powder made from skim milk, containing both casein and whey proteins with most lactose and minerals removed.

Category: Dairy
Subcategory: Milk Proteins
Processing Level: 8
Source: Skim cow milk
Purpose: Very high-protein dairy ingredient used to raise protein with low lactose.
Manufacturing Method: Membrane filtration, then spray drying
Why Manufacturers Choose It: It delivers complete, highly digestible protein with neutral taste, low lactose, and reliable texture.
Commonly Found In: protein bars, RTD shakes, high-protein yogurt, creamers, baked goods
Health Score: 8
Bottom Line: Milk protein isolate is a refined dairy powder that provides very high‑quality protein with little lactose. It’s safe for most people at typical food levels and can help you meet protein goals; lactose‑sensitive individuals should gauge personal tolerance.
Micronutrients: ["Calcium","Phosphorus","Vitamin B2 (Riboflavin)"]
Antioxidants: []
Healthier Alternatives: Skim milk powder, Whey protein concentrate, Micellar casein

Whey protein isolate

A refined dairy protein powder (≥90% protein by dry weight) made from liquid whey that’s filtered and dried to deliver fast-digesting, leucine-rich protein.

Category: Dairy
Subcategory: Whey
Processing Level: 8
Source: Cow's milk whey
Purpose: Complete dairy protein used to raise protein content and emulsify/foam.
Manufacturing Method: Membrane filtration and drying
Why Manufacturers Choose It: Delivers top‑tier protein quality with low lactose, neutral flavor, and strong solubility/texture.
Commonly Found In: protein powders, bars, shakes, yogurt, RTD drinks
Health Score: 8
Bottom Line: Whey protein isolate is a highly purified, very high‑quality dairy protein that most non‑allergic adults tolerate well. It’s an efficient way to meet protein goals, with the main caveat being possible mild GI upset at large single doses.
Micronutrients: ["Calcium","Phosphorus","Potassium"]
Antioxidants: ["Cysteine (glutathione precursor)","Lactoferrin","Alpha-lactalbumin peptides"]
Healthier Alternatives: Skim milk powder, Egg white powder, Pea protein isolate

Tapioca fiber

A soluble dietary fiber made from cassava (tapioca) starch; typically a resistant dextrin used to add fiber with minimal taste or texture.

Category: Fibers
Processing Level: 7
Source: Cassava root starch
Purpose: Adds soluble dietary fiber to foods.
Manufacturing Method: Enzymatic conversion and purification
Why Manufacturers Choose It: It dissolves cleanly, is neutral-tasting, and qualifies as dietary fiber under FDA rules.
Commonly Found In: ["protein bars","shakes","baked goods","cereals","keto candy"]
Health Score: 8
Bottom Line: Tapioca fiber (resistant dextrin) is a refined but well‑studied soluble fiber that can help you meet daily fiber needs with minimal taste or texture changes. Most people tolerate modest amounts, but large intakes can cause gas—so increase gradually and get most of your fiber from whole foods.
Micronutrients: []
Antioxidants: []
Healthier Alternatives: Oat fiber, Chicory root fiber (inulin), Apple fiber

Peanut Butter

A spread made by grinding roasted peanuts into a paste; may include small amounts of salt, sugar, or stabilizers.

Category: Nuts & Seeds
Subcategory: Nuts
Processing Level: 3
Source: Peanuts
Purpose: Plant-based spread providing protein and unsaturated fats.
Manufacturing Method: Roasted nuts ground into paste
Why Manufacturers Choose It: Affordable, familiar flavor that binds bars and adds protein.
Commonly Found In: ["Protein bars","Spreads","Cookies","Energy bites","Sauces"]
Health Score: 7
Bottom Line: Peanut butter is a nutrient‑dense, minimally processed spread that can fit well in balanced diets when portions are moderate. Choose jars with minimal ingredients and buy from reputable brands to limit add‑ins and manage the small but important aflatoxin risk.
Micronutrients: ["Vitamin E","Niacin (Vitamin B3)","Magnesium"]
Antioxidants: ["Resveratrol","p-Coumaric acid","Isoferulic acid"]
Healthier Alternatives: Almond butter, Sunflower seed butter, Tahini

Erythritol

A zero-calorie sugar alcohol that provides bulk and sweetness with minimal impact on blood sugar and insulin; mostly absorbed and excreted unchanged in urine.

Category: Additive
Subcategory: Sugar Alcohols
Processing Level: 8
Source: Corn or wheat starch
Purpose: Zero-calorie bulk sweetener and humectant.
Manufacturing Method: Microbial fermentation with purification
Why Manufacturers Choose It: Delivers clean, sugar‑like sweetness and bulk with near‑zero calories and wide global approval.
Commonly Found In: ["tabletop blends","keto candy","protein bars","sugar-free gum","beverages"]
Health Score: 7
Bottom Line: Erythritol can meaningfully cut added sugar without spiking blood sugar, but it is a highly refined, fermentation‑derived sweetener that often causes diarrhea at large single doses. Keep portions modest (stay well below ~0.5 g/kg/day) and avoid big bolus drinks or candies—especially if you have cardiovascular risk.
Healthier Alternatives: Honey, Inulin, Dates

Peanut flour

A roasted, milled peanut powder—often partially or highly defatted—that adds protein, peanut flavor, and mild binding to foods.

Category: Plant Proteins
Processing Level: 5
Source: Peanuts (Arachis hypogaea)
Purpose: Protein-rich powder that adds peanut flavor.
Manufacturing Method: Roast, press to defat, mill, sieve
Why Manufacturers Choose It: High protein and bold flavor at lower cost than many nut proteins.
Commonly Found In: ["protein bars","baked goods","seasonings","smoothies","sauces"]
Health Score: 8
Bottom Line: For people who are not peanut‑allergic, peanut flour is a nutrient‑dense way to add plant protein and peanut flavor with modest impact on blood sugar. The main cautions are regulated aflatoxin risk and, in some products, solvent‑based defatting.
Micronutrients: ["Niacin (Vitamin B3)","Vitamin E (alpha-tocopherol)","Magnesium"]
Antioxidants: ["Resveratrol","P-coumaric acid","Proanthocyanidins"]
Healthier Alternatives: Almond flour, Sunflower seed flour, Oat flour

Cocoa butter

The pale-yellow fat pressed from cacao beans; it gives chocolate its firm snap at room temp and melts near body temp for a creamy mouthfeel.

Category: Fats & Oils
Subcategory: Plant Fats
Processing Level: 4
Source: Cocoa beans
Purpose: Plant fat that sets chocolate and melts near body temperature.
Manufacturing Method: Pressed fat, optionally deodorized
Why Manufacturers Choose It: Unique melting and crystallization deliver snap, gloss, and shelf stability.
Commonly Found In: ["chocolate","protein bars","coatings","confectionery","baking"]
Health Score: 7
Bottom Line: Cocoa butter is a pressed plant fat, often further deodorized, and it is the required fat in chocolate. If this ingredient shows up often in your snacks, watch total saturated fat and favor products that limit packaging‑related mineral‑oil contamination and avoid extra solvent‑recovery steps.
Healthier Alternatives: Shea butter, Coconut oil, High-oleic sunflower oil + structuring agents

Sunflower lecithin

A blend of natural phospholipids from sunflower oil that helps oil and water mix, improves texture, and can provide choline (a nutrient).

Category: Additive
Subcategory: Emulsifiers
Processing Level: 6
Source: Sunflower seeds
Purpose: Natural emulsifier used to blend fats and water and improve texture.
Manufacturing Method: Natural extract with industrial purification
Why Manufacturers Choose It: Performs reliably at very low doses, soy‑free, label‑friendly, and cost‑effective.
Commonly Found In: ["Chocolate","Baked goods","Plant milks","Instant mixes","Supplements"]
Health Score: 9
Bottom Line: Sunflower lecithin is a refined emulsifier used in tiny amounts; health risk is low and nutrition added is minimal. If you are minimizing processing aids, note that powdered or de‑oiled forms often involve solvent steps and optional bleaching.
Healthier Alternatives: Egg yolk lecithin, Sunflower oil (as release), Acacia gum
Scientific References:

This ingredient information is backed by scientific research:

Chocolate

A sweet, solid confection made by refining and conching cocoa solids with cocoa butter (and often sugar and milk) into a smooth, meltable matrix.

Category: Cocoa & Chocolate
Subcategory: Chocolate
Processing Level: 6
Source: Cacao beans
Purpose: Provides cocoa flavor and a smooth, meltable fat matrix with some polyphenols.
Manufacturing Method: Roast, refine, conche, temper
Why Manufacturers Choose It: It delivers iconic chocolate flavor, glossy snap, and consumer appeal while binding inclusions in bars and snacks.
Commonly Found In: protein bars, cookies, coatings, granola, candies
Health Score: 6
Bottom Line: Chocolate can fit into a balanced diet, but treat it as a sweet. Choose higher‑cocoa, lower‑sugar options, keep portions modest, and be extra cautious for children and pregnancy due to possible heavy‑metal content.
Micronutrients: ["Magnesium","Iron","Copper"]
Antioxidants: ["(-)-Epicatechin","Flavan-3-ols (catechins)","Procyanidins"]
Healthier Alternatives: Cocoa nibs, Cocoa powder (natural, non-alkalized), Carob powder
Scientific References:

This ingredient information is backed by scientific research:

Stevia extract [Reb A]

A zero-calorie high-intensity sweetener purified from stevia leaves; its main molecule, rebaudioside A, tastes ~200–300× sweeter than sugar at typical use.

Category: Additive
Subcategory: Sweeteners
Processing Level: 8
Source: Stevia leaves
Purpose: High‑intensity sweetener used to replace sugar with negligible calories.
Manufacturing Method: Natural extract with industrial purification
Why Manufacturers Choose It: It delivers strong sweetness at very low cost per sweetness unit, is heat/acid stable, and is plant‑derived.
Commonly Found In: ["Soft drinks","Flavored water","Yogurt","Protein bars","Tabletop packs"]
Health Score: 8
Bottom Line: Stevia extract (Reb A) is a zero‑calorie, highly refined sweetener that can meaningfully cut added sugar. Use it as a swap for sugary products, but watch total daily intake and choose purified forms that meet safety specs.
Healthier Alternatives: Raw honey, Monk fruit, Erythritol

About This Report

This ingredient report provides detailed information about every ingredient in Kirkland Signature Chocolate Peanut Butter Chunk protein bar, based on the latest research. Click on any ingredient card to learn more about its source, processing, health effects, and safety information.