Turkesterone
Turkesterone
Turkesterone is a phytoecdysteroid derived primarily from the plant Ajuga turkestanica, structurally similar to insect molting hormones. It is used by athletes and bodybuilders as a natural anabolic agent to promote lean muscle mass gains, improve recovery, and enhance physical performance without binding to androgen receptors.
Mechanism of Action
Turkesterone is believed to exert anabolic effects primarily by binding to ecdysteroid receptors and potentially interacting with estrogen receptor beta (ERβ), which may stimulate muscle protein synthesis through the PI3K/Akt/mTOR signaling pathway. It has been shown in vitro and in animal models to accelerate leucine incorporation into muscle tissue and improve nitrogen retention. Unlike anabolic steroids, it does not appear to activate the androgen receptor, which may explain its favorable safety profile.
Evidence by Health Goal(13 goals)
Dosing Protocols
With meals to improve absorption and reduce gastrointestinal discomfort
Cycle: 8-12 weeks on, 4 weeks off
Many products are standardized to 10% turkesterone content, so label dose may reflect total extract weight. Higher-end doses (up to 2000mg/day total) have been used anecdotally with no clear added benefit. Look for products with cyclodextrin complexing for improved bioavailability.
Safety & Side Effects
Turkesterone has a generally favorable safety profile in the short term, with no androgenic or hepatotoxic effects observed in available studies, and it does not suppress the hypothalamic-pituitary-gonadal axis. However, human clinical trial data is very limited, long-term safety has not been established, and most evidence comes from animal studies or anecdotal reports.
Possible Side Effects
- !Nausea and gastrointestinal discomfort, especially when taken on an empty stomach
- !Headache, particularly during the first week of use
- !Fatigue or lethargy reported by some users at higher doses
- !Mild dizziness in sensitive individuals
- !Possible mild hormonal fluctuations due to ERβ activity, though not well characterized in humans
- !Skin flushing in rare cases
Interactions
- -May have additive effects with other anabolic or muscle protein synthesis-enhancing supplements such as creatine or leucine-rich proteins
- -Potential interaction with estrogen receptor-modulating drugs (e.g., SERMs like tamoxifen) due to ERβ binding activity
- -May theoretically potentiate the effects of insulin or blood glucose-lowering agents given reported improvements in glucose utilization in animal models
- -Combined use with other herbal adaptogens (e.g., ashwagandha, ecdysterone) may produce additive effects with unknown safety profile at high combined doses
Cost & Where to Buy
Cost varies significantly based on extract standardization percentage, use of cyclodextrin complexing for bioavailability, and brand reputation. Pure standardized extracts from reputable suppliers cost more but offer better value per active dose.
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