At 300mg in one daily softgel, this lands right at the top of the clinically studied range for **Coenzyme Q10** (100–300mg) — a full effective dose for heart health and cellular energy in a single capsule. That's especially relevant if you take a statin: statins deplete your body's own CoQ10, and meta-analyses back supplementation for easing statin-related muscle aches.

CoQ10 is fat-soluble, and this oil-based softgel delivers it in soybean oil to aid absorption — take it with a fat-containing meal for best results. The form is standard ubiquinone, which your body converts to the active ubiquinol; that conversion works well for most but slows with age.

One thing to know if you're a statin user: the label is clear that CoQ10 supports statin therapy rather than replacing it, so don't stop any prescribed medication to take this.

BioStacks
Kirkland Signature

CoQ10 300 mg

Capsule · 1 Softgel · 100 servings

iHerbAmazon

Best for

Longevity

Ingredients (1)

Coenzyme Q10

100%

Dose

300 mg

Target

100–300 mg

Form

—

Nutrition

Calories and macros.

  • Calories10 Calorie(s)
  • Total Fat1 Gram(s)

Other Ingredients (6)

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Soy LecithinEmulsifier

Widely used emulsifier derived from soybeans

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

GlycerinHumectant

Sweet-tasting liquid used in soft capsules and liquids

Vegetable OilCarrier

Edible oils used as carriers in softgels and as processing aids

Coenzyme Q10 (coenzyme q-10)

Not reviewed yet

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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