Deer Antler Velvet & IGF-1
Velvet antler (Lu Rong / Nokyong) and the insulin-like growth factor angle
Evidence grade 2 of 5, Thin. Read how the Atlas grades evidence.
The written rationale for this grade is still being prepared.
- FDA
- Not FDA approved; sold as a dietary supplement
Reference only. Not medical advice.
What can go wrong
Velvet antler is generally well tolerated, but as an animal-derived growth-factor-containing product it raises specific concerns: hormonal/growth-factor content of uncertain consequence, potential for allergic reaction, and, importantly for athletes, the risk of a positive doping test from IGF-1 or other prohibited substances. WADA has explicitly urged athletes to be cautious with deer antler velvet spray because of its IGF-1 content. Sourcing/animal-welfare concerns and contamination (microbial or adulterant) are additional issues.
This is something to take to a clinician. The Atlas can tell you what is known about deer antler velvet & igf-1 in general. It cannot tell you what is happening in your body, and the difference matters most for exactly the symptoms that bring people to this page.
Velvet antler, the soft, blood-rich growing antler of deer or elk, called Lu Rong in Chinese medicine and nokyong in Korean medicine, is a classical animal-derived tonic used to strengthen kidney yang and jing (essence), with applications including impotence, fatigue, and bone/joint health. Its modern notoriety comes from the insulin-like growth factor-1 (IGF-1) angle: velvet antler naturally contains IGF-1, a substance prohibited in sport, which made 'deer antler spray' a flashpoint in anti-doping. Human evidence for sexual or performance benefit is weak, and the orally delivered IGF-1 in sprays is almost certainly destroyed or present in performance-irrelevant amounts.
An ancient yang tonic that collided with modern anti-doping over IGF-1.
What people take it for
These are the reasons people give for taking it. They are not effects it has been shown to have.
How it is supposed to work
Velvet antler is a complex biological material containing collagen, growth factors (including IGF-1), gangliosides, glycosaminoglycans, amino acids, and minerals. In traditional theory it supplements yang and jing, concepts that map loosely onto vitality, reproductive function, and skeletal strength. The IGF-1 hypothesis posits anabolic, pro-recovery effects, but oral/sublingual IGF-1 is a peptide largely degraded in the gut and unlikely to reach the circulation intact in meaningful amounts, undercutting the marketing rationale.
Velvet antler is harvested before calcification, when it is cartilaginous and richly vascularized. Its bioactive profile varies by species, antler section (tip vs base), age, and processing, a key source of inconsistency between products.
The IGF-1 in a spray almost certainly does nothing
The 'IGF-1 spray' premise is pharmacologically dubious: IGF-1 is a protein hormone, and oral or sublingual delivery does not reliably get intact, active IGF-1 into the bloodstream. Independent analyses confirmed human IGF-1 in some products, but anti-doping authorities concluded that detectable amounts were too low to enhance performance, even as the products still posed a contamination/test risk for athletes.
Safety in detail
- WADA advisory: deer antler velvet spray may contain IGF-1 (prohibited S2), risking positive tests.
- Animal-derived growth factors of uncertain physiological consequence and allergenic potential.
- Product inconsistency by species, antler section, and processing.
- Animal-welfare and humane-harvest concerns; possible microbial/adulterant contamination.
What people get wrong
Often saidDeer antler spray delivers performance-boosting IGF-1.
ActuallyOral/sublingual IGF-1 is largely destroyed in the gut, and authorities judged detectable amounts in sprays too low to enhance performance.
Often saidIt is a proven natural testosterone and erection booster.
ActuallyHuman evidence for sexual benefit is weak; the strongest documented modern fact about it is the doping-test risk, not efficacy.
Often saidIt is harmless because it is a traditional animal tonic.
ActuallyAs an animal growth-factor product it carries contamination, allergy, doping-test, and animal-welfare concerns.
Who profits, and who pushes back
Nobody is named here yet, because we have not done that work on this entry. Read that as unfinished. Somebody almost certainly sells this, and somebody almost certainly disputes it. Assume both until we have checked.
Where the research comes from
Most of the published research on this comes from one place. 50% of it is from China & Korea (traditional). Findings that no unrelated group has reproduced are weaker than the study count makes them look.
| Place | Share of published research |
|---|---|
| China & Korea (traditional) | 50% |
| New Zealand (farming/export) | 25% |
| North America (sports supplements) | 25% |
How we got here
Velvet antler is one of the oldest items in East Asian materia medica, recorded in Chinese sources for over two millennia and central to Korean medicine as nokyong, where it ranks among the most prized tonics. Traditional use targets kidney yang and jing, vitality, reproductive strength, and skeletal health. In the 21st century, the substance jumped from heritage tonic to sports-doping headline when 'deer antler velvet spray' products marketed to athletes were found to contain IGF-1, drawing WADA advisories and high-profile athlete controversies and forcing a public reckoning over what was actually in the bottle and whether it could possibly work.
- AntiquityVelvet antler recorded in Chinese materia medica as Lu Rong
- HistoricalBecomes a premier tonic (nokyong) in Korean medicine
- 2011-2013'Deer antler spray' marketed to athletes; IGF-1 content sparks doping controversy
- 2013Independent mass-spec study confirms human IGF-1 in products; WADA advisory issued
The people taking it
Velvet antler remains a high-value tonic in China and Korea (with major deer-farming industries, including in New Zealand for export) and circulates globally as recovery and libido supplements and sprays, the latter dogged by the IGF-1/doping question.
What we do not know
- Is there any robust human RCT evidence for sexual or recovery benefit?
- Can products be standardized and welfare-certified to address contamination and ethics?
The market for this
What follows describes how this is bought and sold. It is not a buying guide and it is not an endorsement of any seller.
Velvet is farmed (notably in New Zealand) as well as sourced traditionally; humane-harvest practices, species/section labeling, and contaminant testing vary. Animal-welfare considerations are part of responsible sourcing.
At a glance
- Chinese name
- Lu Rong (velvet antler)
- Korean name
- Nokyong
- Notable constituent
- IGF-1 (prohibited in sport under WADA S2)
- TCM action
- Tonifies kidney yang and jing (essence)
What this entry does not yet cover
What follows is unfinished work on our side, not a finding about Deer Antler Velvet & IGF-1. A short entry is not a safe entry.
- Cost and market. We have not documented what it sells for or who sells it.
- Supply chain. We have not mapped where it is made.
- Who uses it. We have not documented the user groups.
- What could change. No forward-looking summary yet.
- How it compares. We have not set it against the alternatives.
- Children and teenagers. We have not checked what is known about younger people.
Sources
The studies below are named and described, but not linked. You cannot open them from here and check our reading against them, which means this page is our summary of the literature rather than a document you can verify. Weigh it accordingly until the links exist.
The studies that matter
Detection of human IGF-1 in deer antler velvet supplements (Cox & Eichner, Rapid Commun Mass Spectrom)2013
Confirmed presence of human IGF-1 in commercial 'all-natural' deer antler products
WADA advisory on deer antler velvet spray2013
Anti-doping authorities flagged IGF-1 content; subsequent assessment held that detectable amounts were too low to enhance performance, while still cautioning athletes