Ingredient evidence

Coleus forskohlii and the forskolin supplement: what the evidence covers

Quick answer

Coleus forskohlii is a root extract sold as a forskolin supplement, and its human evidence is thin. A 2026 review of 4 randomized trials looked at body composition and weight, with inconsistent results, not blood sugar. Olivaro lists coleus forskohlii root extract in its 200 mg blend with no amount, and no trial tested Olivaro.

Written by the Olivaro label deskUpdated October 31, 2026 · 5 min read

Olivaro cover graphic of the bottle dropper — A designed cover graphic of the dropper; it shows the product format, not a result.

The ingredient

What is coleus forskohlii in a forskolin supplement?

Coleus forskohlii is a plant, and its root extract is the form sold as a forskolin supplement. On Olivaro's panel it is the ninth of 22 names inside a 200 mg proprietary blend.

The label prints no coleus amount, so any one ingredient could hold at most the whole 200 mg. As read in the rule, FDA's blend rule lists ingredients in descending order by weight, but we did not verify that the label follows it (21 CFR 101.36(c), proprietary blends).

The trials

What have coleus forskohlii trials found?

Very little about blood sugar. A 2026 systematic review covered 4 randomized trials and focused on body composition (Nikkhah 2026, Coleus forskohlii review).

It reported that coleus may reduce fat mass, with inconsistent results for weight, and adverse effects described as generally mild and infrequent. The abstract gives no dose, and it does not report a glucose outcome. That is a reported finding, not a promise, and no trial tested Olivaro. Nothing here says Olivaro helps with weight.

What we could not find

Is coleus forskohlii safe with blood pressure or blood thinner medicine?

We cannot say, because we found no source on it. Ask your pharmacist before use if you take blood pressure, blood thinner or heart-rhythm medicine.

Coleus: what we have and what we lack
Question	What we found
Effect on blood sugar	No source found
Weight and fat mass	4 trials; inconsistent weight results
Side effects	"Generally mild and infrequent," no dose given
Blood pressure and blood thinners	No source found
Amount in Olivaro	Not printed

Olivaro liquid: 30 mL a bottle1 mL serving · 2, 3 or 6 bottles · from $49 a bottle · shipping at checkout

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In context

How does coleus compare with the other blend ingredients?

The bars are an editor's reading of human studies, not a rating of Olivaro.

Chromium
Very little

NIH calls the clinical significance of chromium's small effects 'unclear'; the label's 0.7 mcg is 2% of the Daily Value. (NIH ODS, Chromium) (Zhao 2022, chromium type 2 diabetes meta)
Gymnema
Very little

Studies were small, mostly before-and-after, and very mixed; LiverTox says effectiveness in diabetes 'has not been shown'. (Devangan 2021, gymnema type 2 diabetes meta) (LiverTox, Gymnema)
Coleus forskohlii
Very little

The review looked at body fat, not blood sugar, and found inconsistent weight results. (Nikkhah 2026, Coleus forskohlii review)
Green tea & guarana
Very little

Six trials of green tea found no difference in HbA1c or fasting glucose; guarana seeds hold up to 6% caffeine. (Yu 2017, green tea glycemic meta) (LiverTox, green tea)
Ginseng & herbs
Very little

Results are mixed and the trials used preparations and doses the label does not match; ginseng lowered fasting glucose by 0.31 mmol/L in one meta-analysis. (Shishtar 2014, ginseng glycemic meta) (NCCIH, Asian ginseng)
Amino acids
None shown

We found no source tying these amino acids at the blend's unstated amounts to blood sugar; NIH calls carnitine results in type 2 diabetes mixed. (NIH ODS, Carnitine) (Dong 2011, arginine BP)
Sweeteners & licorice
Very little

Xylitol is dangerous for dogs; glycyrrhizin can raise blood pressure and lower potassium in large amounts. (FDA, Xylitol dangerous for dogs) (Zare 2024, stevia glucose meta)

Our plain reading of the research linked on each row, for blood sugar, glucose or weight, on a 0 to 4 scale. It rates the ingredient as studied, at the studied amounts. It does not rate Olivaro: no study has tested the liquid, and the label prints no amount for most rows.

If you take insulin or diabetes pills, ask a clinician or pharmacist first, keep taking prescribed medicine exactly as directed, and never stop or change it because of a supplement. Severe low blood sugar (confusion, fainting, seizure), chest pain or trouble breathing: call 911. Pregnant or nursing mothers, people under 18 and people with a known medical condition should consult a physician first. See the coleus page.

90-serving supply

3 bottles: 90 mL

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180-serving supply

6 bottles: 180 mL

$294$49 a bottle

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Seller-listed prices; confirm at checkout (Olivaro sales site). Two bottles are also sold. If you take diabetes medicine or insulin, ask your clinician or pharmacist before you order.

FAQ

Olivaro questions people ask

Does a forskolin supplement help with weight?

One review of 4 trials reported that coleus may reduce fat mass, with inconsistent weight results. That is a reported finding about body composition, not a promise, and no trial tested Olivaro. We make no weight claim for it.

Does coleus affect blood sugar?

We found no source on coleus and blood sugar. The review we read measured body composition. If you take diabetes medicine, ask your pharmacist before adding any product that lists coleus.

How much coleus is in Olivaro?

The label does not say. Coleus forskohlii root extract is one of 22 names sharing a 200 mg proprietary blend, so the most it could hold is the whole 200 mg. No individual amount is printed.

Who wrote this

Written and reviewed by

Written byThe Olivaro label deskOlivarodaily, USA Authorized Olivaro Retailer

Pages built from the label, the seller's brief and linked NIH, FDA, CDC, FTC and peer-reviewed sources.

Medically reviewed byDr. Maria Menucci, MD, PhysicianRole: Medical reviewerReview date: October 31, 2026

Last updated October 31, 2026. Read our editorial standards and how we check reviews. This website is the information site of a USA Authorized Olivaro Retailer. It is not the manufacturer, and the label names Instituto Experience as the distributor. We earn money when you buy through our order links.

Keep reading

More about Olivaro

Coleus forskohlii

The 200 mg blend

Who should not take it

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