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Raspberry ketones explained: what it is and side effects

Raspberry ketones are found in red raspberries. The NIH says their proposed action is to change how the body processes fats. Three of the products we reviewed list raspberry ketones inside a 200 mg proprietary blend, but none prints its individual amount.

By HowNook's Health desk · Updated

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In the products we reviewed
3, none prints the amount

What raspberry ketones is

  • Raspberry ketones are found in red raspberries.1
  • The proposed action of raspberry ketones is to change how the body processes fats.2

Foods that have it1

  • Red raspberries

How much raspberry ketones each product gives

Per serving, as each label prints it

Amount not printed: the dashed line shows the most it can be, the whole blend

GlucoTonicNot printed · at most 200 mg
Sugar DefenderNot printed · at most 200 mg
Glyco HarmonyNot printed · at most 200 mg

Before you take it

Ask a doctor first

  • Talk with your health care provider before taking a supplement marketed for weight loss.1
  • There is not enough information to know whether raspberry ketones are safe.1

These statements have not been evaluated by the FDA. A supplement is not a medicine.

The 3 products we reviewed that list raspberry ketones

ProductForm and servingRaspberry ketones per servingOur scorePrice a bottleBuy
GlucoTonic#1 in blood sugar supportLiquid drops1 mlNot printedIn a 200 mg proprietary blend9.9$49Check price
Sugar Defender#3 in blood sugar supportLiquid drops1 mlNot printedIn a 200 mg proprietary blend9.5$49Check price
Glyco Harmony#5 in blood sugar supportLiquid drops1 mlNot printedIn a 200 mg proprietary blend9.3$49Check price
Prices checked Oct 5, 2026

Questions people ask

What are raspberry ketones?

Raspberry ketones are found in red raspberries. The NIH describes their proposed action as changing how the body processes fats.

What do raspberry ketones do in your body?

The NIH says the proposed action of raspberry ketones is to change how the body processes fats.

Are raspberry ketones safe, and what about side effects?

There is not enough information to know whether raspberry ketones are safe. Ask a clinician before taking a supplement marketed for weight loss.

Which products we reviewed contain raspberry ketones, and how much do they hold?

GlucoTonic, Sugar Defender and Glyco Harmony list raspberry ketones. Each includes it inside a 200 mg proprietary blend per 1 ml serving, but none prints the individual amount of raspberry ketones.

Also in these products

All ingredients

Sources

The products, amounts and prices come from each product's label and checkout, as its review shows them. AI drafts our pages from listed sources, figures are checked against them, and we have not tried the products.

  1. 1NIH Office of Dietary Supplements, WeightLoss Consumerods.od.nih.gov/factsheetschecked
  2. 2NIH Office of Dietary Supplements, WeightLoss HealthProfessionalods.od.nih.gov/factsheetschecked