Forskolin
Also known as: Coleus forskohlii extract, Plectranthus barbatus extract, colforsin, FSK
Effective Dosage
No established dose from provided studies
What the Science Says
Forskolin is a natural diterpene compound extracted from the blue spur flower (Plectranthus barbatus), a plant in the mint family. It works by activating an enzyme called adenylyl cyclase, which raises levels of cyclic AMP (cAMP) — a chemical messenger that influences many body processes including metabolism, pigmentation, and cell signaling. One clinical trial in the provided research found oral forskolin improved smell recovery in people with post-COVID olfactory dysfunction, and it has been studied in lab settings for anti-inflammatory and cardiovascular effects.
What It Doesn't Do
Not proven to burn fat or cause meaningful weight loss on its own — the weight loss study provided used a multi-ingredient blend, so forskolin's individual contribution is unknown. Not a proven muscle-builder. No solid human evidence it lowers blood pressure or treats obesity. The tanning effect seen in animal models has not been validated in human clinical trials.
Evidence-Based Benefits
Forskolin is a diterpene derived from Plectranthus barbatus (blue spur flower) that activates adenylyl cyclase, raising intracellular cyclic AMP (cAMP) levels, which mediates downstream effects on various tissues (PMID: 40781374, 40859734). One RCT found oral forskolin improved composite olfactory scores (threshold, discrimination, identification) in patients with chronic post-COVID olfactory dysfunction compared to placebo (PMID: 39001919). It has also been studied as a research tool to activate cAMP signaling pathways in laboratory models of cystic fibrosis, kidney disease, and follicular biology, though these are not direct therapeutic applications in humans (PMID: 33278322, 41563398, 40900732).
Weak EvidenceEffective at: No established dose from provided studies
Source: auto-research
Absorption & Bioavailability
Unknown — no pharmacokinetic data provided in the available studies. Poor water solubility noted in lab research, which may limit absorption.
Red Flags to Watch For
- Most weight-loss marketing claims are based on old, small, or industry-funded studies not included in this dataset — treat bold fat-loss claims with skepticism
- The one weight-loss study provided used a multi-ingredient supplement, making it impossible to credit forskolin specifically
- Tanning/skin pigmentation use is underresearched in humans — animal data only per the systematic review provided
- 574 supplement products registered in NIH DSLD suggests widespread commercial use far outpacing the actual clinical evidence base
- Poor water solubility flagged in lab research may mean many oral products deliver inconsistent amounts of active compound
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-06