Kirkland Signature Super B-Complex with Electrolytes 500 Tablets

Common questions

Is Kirkland Signature Super B-Complex with Electrolytes 500 Tablets healthy?

Kirkland Signature Super B-Complex with Electrolytes 500 Tablets scores 65/100 on Scout's independent analysis of ingredients, additives, and lab results — a fair-to-good score — solid, with tradeoffs. This supplement contains a range of beneficial B vitamins and electrolytes, which are essential for energy metabolism and maintaining fluid balance.

How processed is Kirkland Signature Super B-Complex with Electrolytes 500 Tablets?

Kirkland Signature Super B-Complex with Electrolytes 500 Tablets is NOVA Group 4: Ultra-Processed Foods.

Which ingredients drive Kirkland Signature Super B-Complex with Electrolytes 500 Tablets' score?

In Scout's ingredient-by-ingredient analysis, Sodium Chloride, Ascorbic Acid, Thiamin Mononitrate count in its favor. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

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Kirkland Signature Super B-Complex with Electrolytes 500 Tablets

Kirkland Signature
65 Fair

Analysis updated September 2026 · How Scout scores

$86.50 · 500 tablets · $17.30 / count
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Near you

Kirkland Signature is carried at Costco stores. Find one within 25 miles.

At a glance

Beneficial ingredients 10
Harmful ingredients 0
Owned by Costco
Category Vitamins and Minerals
Summary

This supplement contains a range of beneficial B vitamins and electrolytes, which are essential for energy metabolism and maintaining fluid balance. However, it includes several additives such as cellulose, silicon dioxide, and magnesium stearate, which contribute to its processing level. While these additives are common in supplements, they slightly detract from the overall formulation quality.

Key ingredients 19

Thiamin Mononitrate
Very Good

Thiamin mononitrate is a stable form of vitamin B1, essential for energy metabolism and nerve function. It supports carbohydrate metabolism and is crucial for heart and brain health. In supplements, it helps prevent thiamin deficiency.

Benefits

Supports energy metabolism and nerve function, preventing deficiency.

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d-Calcium Pantothenate
Very Good

d-Calcium pantothenate is a stable form of vitamin B5, essential for synthesizing coenzyme A and energy production. It supports adrenal function and helps convert food into energy. In supplements, it aids in reducing stress and improving skin health.

Benefits

Supports energy production and adrenal function, improving skin health.

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d-Biotin
Very Good

d-Biotin, or vitamin B7, is essential for carbohydrate and fat metabolism. It supports healthy hair, skin, and nails. In supplements, it helps improve hair and nail strength and supports metabolic function.

Benefits

Supports healthy hair, skin, and nails, improving metabolic function.

Cyanocobalamin
Very Good

Cyanocobalamin is a synthetic form of vitamin B12, essential for nerve function and red blood cell formation. It supports energy production and DNA synthesis. In supplements, it helps prevent B12 deficiency and supports neurological health.

Benefits

Supports nerve function and red blood cell formation, preventing deficiency.

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Sodium Chloride
Good

Sodium chloride is essential for maintaining fluid balance and nerve function. It is a key electrolyte that supports hydration and muscle function. In supplements, it helps replenish sodium lost through sweat.

Risks

Excessive intake can lead to high blood pressure and cardiovascular issues.

Benefits

Helps maintain proper hydration and supports nerve and muscle function.

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Ascorbic Acid
Good

Ascorbic acid, or vitamin C, is a powerful antioxidant that supports immune function and skin health. It is crucial for collagen synthesis and helps protect cells from oxidative damage. In supplements, it enhances iron absorption and boosts immunity.

Risks

High doses may cause gastrointestinal discomfort or kidney stones.

Benefits

Supports immune function, enhances iron absorption, and promotes healthy skin.

See more about Ascorbic Acid →
Potassium Chloride
Good

Potassium chloride is an important electrolyte that helps maintain fluid balance and supports muscle and nerve function. It is used in supplements to replenish potassium levels, especially after exercise. It aids in reducing blood pressure and preventing muscle cramps.

Risks

Excessive intake can lead to hyperkalemia, affecting heart function.

Benefits

Supports muscle and nerve function, helps maintain fluid balance.

See more about Potassium Chloride →
Niacinamide
Good

Niacinamide is a form of vitamin B3 that supports energy metabolism and skin health. It helps convert food into energy and is essential for DNA repair. In supplements, it aids in reducing cholesterol levels and improving skin conditions.

Risks

High doses may cause liver damage or gastrointestinal issues.

Benefits

Supports energy metabolism, improves skin health, and reduces cholesterol.

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Riboflavin
Good

Riboflavin, or vitamin B2, is essential for energy production and cellular function. It supports the metabolism of fats, drugs, and steroids. In supplements, it helps prevent riboflavin deficiency and supports overall health.

Benefits

Supports energy production and prevents riboflavin deficiency.

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Pyridoxine Hydrochloride
Good

Pyridoxine hydrochloride is a form of vitamin B6, crucial for protein metabolism and neurotransmitter synthesis. It supports brain health and immune function. In supplements, it helps reduce symptoms of PMS and improve mood.

Risks

High doses may cause nerve damage or sensory neuropathy.

Benefits

Supports brain health and protein metabolism, improving mood.

See more about Pyridoxine Hydrochloride →
Cellulose
Neutral

Cellulose is a plant-derived fiber used as a binder or filler in supplements. It is generally considered safe and non-digestible, providing no nutritional value. It helps maintain tablet structure without affecting health.

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Dicalcium Phosphate
Neutral

Dicalcium phosphate is a source of calcium and phosphorus, used as a dietary supplement and tablet binder. It supports bone health but is primarily used for its binding properties in tablets. It is generally considered safe in moderate amounts.

Risks

Excessive intake may lead to imbalances in calcium and phosphorus levels.

Benefits

Provides calcium and phosphorus, supporting bone health.

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Croscarmellose Sodium
Neutral

Croscarmellose sodium is a disintegrant used in tablets to help them dissolve quickly. It is derived from cellulose and is considered safe for consumption. It ensures the effective release of active ingredients in supplements.

Benefits

Ensures effective release of active ingredients in supplements.

See more about Croscarmellose Sodium →
Silicon Dioxide
Neutral

Silicon dioxide is used as an anti-caking agent in supplements to prevent clumping. It is naturally occurring and considered safe for consumption. It does not provide nutritional benefits but ensures product stability.

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Mannitol
Neutral

Mannitol is a sugar alcohol used as a sweetener and stabilizer in supplements. It is low in calories and has a minimal impact on blood sugar levels. It is generally safe but may cause digestive issues in large amounts.

Risks

May cause digestive issues like bloating or diarrhea in large amounts.

Benefits

Provides sweetness with minimal impact on blood sugar levels.

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Magnesium Stearate
Neutral

Magnesium stearate is used as a lubricant in supplement manufacturing to prevent ingredients from sticking to equipment. It is considered safe in small amounts but provides no nutritional benefits. It ensures smooth production of tablets.

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Cellulose Coating
Neutral

Cellulose coating is used to protect tablets and ensure their stability. It is derived from plant fibers and is considered safe for consumption. It does not provide nutritional benefits but enhances tablet durability.

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Folic Acid
Neutral

Standard formulation ingredient — neither beneficial nor harmful at typical use.

Risks

Excessive intake may mask vitamin B12 deficiency symptoms.

Benefits

Supports DNA synthesis and prevents neural tube defects.

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Carnauba Wax
Neutral

Carnauba wax is used as a coating agent in supplements to provide a glossy finish. It is derived from the leaves of the carnauba palm and is considered safe for consumption. It does not provide nutritional benefits but enhances product appearance.

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Processing

Group 4 · Ultra-processed

Ultra-Processed Foods

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