Coleus Forskohlii: Graded D

This ingredient fails all three grading tests, and the disclosure failure is the one that makes the other two impossible to argue about.

What it is

A South Asian member of the mint family, used in Ayurvedic practice, whose root yields the compound that gives it whatever pharmacological interest it has: forskolin.

Correct choice — not for this purpose

Forskolin activates adenylate cyclase, raising intracellular cyclic AMP. cAMP is involved in an enormous range of cellular processes, which explains why forskolin turns up across many research fields — and why attributing any specific outcome to it is difficult.

The research base concentrates on:

• Glaucoma — reducing intraocular pressure, the most established use
• Asthma — bronchodilation via cAMP-mediated smooth muscle relaxation
• Body composition — small studies, heavily over-marketed, poorly supported
• Cardiovascular effects — vasodilation and blood pressure reduction

Joint health does not appear on that list. There is laboratory work connecting cAMP signalling to inflammatory mediators, which is presumably the rationale, but that is a long way from evidence that forskolin relieves joint symptoms in people.

Properly disclosed — no

The panel says 15 mg of Coleus Forskohlii Extract and stops there. No forskolin percentage is printed.

Commercial extracts are commonly standardised to 10% or 20%, which would put the actual forskolin content between 1.5 and 3 mg — but those are conventions, not requirements, and unstandardised extracts exist. Without a printed figure there is no honest way to state how much active compound is present.

Defensible amount — unknowable

Which is itself the answer. An ingredient you cannot quantify is one you cannot assess, and on a label that already asks for trust in two places, this is the line asking for the most.

Even taking the most generous standardisation assumption, human studies on forskolin generally use considerably more than 3 mg.

Why D rather than F

Because it is not harmful at this amount in a healthy adult, and because forskolin is a real compound with real pharmacology rather than a filler chosen for label decoration. It is the wrong tool, in an unstated quantity, for the stated job — which is a poor grade, not a disqualifying one.

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