Ranked by how strong the human evidence is — best supported first.
Best supportedExercise recoveryNot enough evidence· no source yetThen, in order
The soft cartilaginous tissue of growing deer or elk antler, removed before it calcifies, dried and sold as powder, capsules or sublingual spray. It is a long-standing ingredient in Korean and Chinese traditional medicine.
Deer antler velvet is sold in the West almost entirely on one claim: that it contains insulin-like growth factor 1. It does contain IGF-1, in small and variable amounts, and this is the problem rather than the selling point. IGF-1 is a peptide hormone, it is destroyed by digestion like other peptides, and the sublingual sprays that exist to get around that have never been shown to deliver it into circulation. Meanwhile IGF-1 is explicitly prohibited in sport, and deer antler products have been at the centre of several high-profile doping cases and warnings from anti-doping bodies. The performance trials are unimpressive: randomised studies in weight-trained men found no meaningful advantage in strength or body composition.
Regulation: Sold as a dietary supplement in the US with no pre-market efficacy or safety review. IGF-1 and growth factors are prohibited at all times under the World Anti-Doping Code, and anti-doping organisations have warned athletes specifically against deer antler products because of the risk of a positive test.
The amounts, forms and durations published trials of Deer antler velvet actually administered.
These are the amounts published trials administered — not a recommendation, and not a dose to copy. Trial participants were screened, supervised and given a characterised preparation. What is in a retail bottle is frequently not what was studied, and the amount that suits one person is not general advice.
Studied for Strength and body composition trials
1500–3000 mg
Velvet antler powder, daily · 10–12 weeks
Doses in the small randomised trials in resistance-trained men, which found no meaningful difference from placebo in strength or body composition.
Studied for Sublingual spray products
1 mg
Spray, applied under the tongue
Marketed on the premise that sublingual delivery bypasses digestion of IGF-1. That has not been demonstrated for this product, and no dose can be considered established.
This is general information about food, not medical advice. It cannot diagnose, treat or replace guidance from a clinician who knows your history.
Each window says whether a trial compared it against an alternative, or whether it is convention and pharmacology. Most timing advice is the second kind.
None of the timings below were directly compared in a trial. They reflect how the research happened to dose, or what the pharmacology implies — which is not the same as a timing being better.
No timing comparison exists. Sublingual dosing schedules are marketing conventions rather than pharmacokinetic findings.
Timing was not directly compared. This reflects convention or how the compound behaves in the body, not a trial showing this window works better.
What each association actually rests on, and the papers behind it. A rating describes the state of the research, not how promising the supplement sounds. How we rate evidence.
Recovery claims rest on the growth factor story rather than on trial data. No adequately powered study supports them.
Not enough evidence. Not enough human research to say anything useful yet.
Small trials of antler preparations for osteoarthritis and rheumatoid symptoms have been inconsistent and of poor quality. There is not enough evidence to say anything.
Not enough evidence. Not enough human research to say anything useful yet.
Randomised controlled trial · Biological research for nursing · 2002 · PMID 12003439
Systematic review · The New Zealand medical journal · 2012 · PMID 23321886
Randomised controlled trial · Biological research for nursing · 2008 · PMID 18077778
Deep research mode adds each paper’s own conclusion and stated limitations.
Randomised trials in resistance-trained men found no meaningful improvement in strength, power or body composition compared with placebo. The IGF-1 rationale does not survive the fact that peptide hormones are digested when swallowed.
What may be going on: Velvet antler contains small amounts of IGF-1 and other growth factors. Oral peptides are broken down to amino acids in the gut, and no study has shown intact IGF-1 entering the circulation from these products.
Not enough evidence. Not enough human research to say anything useful yet.
Interactions, contraindications and dose limits, most serious first. Concentrated extracts interact with medication in ways the whole plant does not, so this section carries more weight here than it does on a food page.
Worth knowing
IGF-1 and other growth factors are prohibited at all times under the World Anti-Doping Code, and anti-doping agencies have issued explicit warnings about deer antler products. Any tested athlete taking one is risking a sanction for a product that the trials suggest does nothing.
Worth knowing
The entire commercial case is a hormone that is digested when swallowed, present in variable and usually tiny amounts, in a product that has never been shown to raise circulating IGF-1 in a person. Sublingual formats exist to address this and have not demonstrated that they do.
Avoid
A product marketed for its growth-factor content is a poor choice for anyone with a history of hormone-sensitive cancer, and growth factor signalling is directly relevant to tumour biology. This should not be taken alongside cancer treatment.
Worth knowing
Antler is removed from live animals, and welfare standards vary by country. Chronic wasting disease, a prion disease of deer and elk, is an additional reason sourcing and country of origin matter for cervid tissue products.
Allergy
As a concentrated animal tissue, it can cause allergic reactions. There is no long-term human safety data at supplement doses.