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Icariin Supplement: What Memorial Sloan Kettering Says About Horny Goat Weed (Epimedium)
Icariin is a compound from Epimedium, called horny goat weed. SodaPeak lists horny goat weed extract first, with no icariin amount. Memorial Sloan Kettering says scientific evidence for Epimedium is limited, lists effects such as sweating and a rapid irregular heartbeat, and warns people with hormone-sensitive cancers or heart disease.
Written by the SodaPeak label deskUpdated · 4 min read
Terms01
What is icariin?
A compound found in Epimedium, the plant called horny goat weed. Products may list the plant extract, or a standardized amount of the compound.
SodaPeak's panel lists horny goat weed extract as its first name and gives no icariin figure. No source we read states the icariin content of this capsule. The horny goat weed page covers the plant in full.
What MSK says02
What does Memorial Sloan Kettering say?
That scientific evidence to support use of Epimedium is limited.
| Topic | Note |
|---|---|
| Fatigue | Traditional use only; not studied in clinical trials |
| Osteoporosis | Small trials, preliminary |
| Sexual dysfunction | Traditional use; more studies needed |
| Effects listed | Sweating, rapid irregular heartbeat, increased energy, mood changes |
| Cautions | Avoid with hormone-sensitive cancers or heart disease (MSK, Epimedium) |
The page adds that toxicity and safety evaluations are lacking, and that Epimedium may affect medicines processed by CYP3A4 and aromatase inhibitors, with the clinical relevance unknown.
Label gaps03
What does the SodaPeak label not tell me?
The amount of the extract, the plant part, the ratio and any compound content.
It lists eight names in one blend of 1,200 mg in descending order of weight (21 CFR 101.36 (eCFR)). Horny goat weed is first, so it may weigh the most, but how much is not stated.
1,200 mgone Proprietary Blend per serving of 2 capsules, 8 names, no amount printed for any of them
- ≤ 1,200mg1Horny goat weed
- ≤ 600mg2Tongkat ali
- ≤ 400mg3Saw palmetto
- ≤ 300mg4Nettle root
- ≤ 240mg5Wild yam
- ≤ 200mg6Sarsaparilla
- ≤ 171.4mg7Orchic substance
- ≤ 150mg8Boron amino acid chelate
Each ridge is a ceiling, not a measured amount: names in a blend are listed from most to least by weight (21 CFR 101.36 (eCFR)), so the name in place n can weigh at most 1,200 mg divided by n. The first name must weigh at least 1,200 mg divided by 8, which is 150 mg. The real split is not printed.
SodaPeak Capsules: 60 per bottle30 servings of 2 capsules · 1, 2, 3 or 6 bottles · price shown at checkout
See packsWhat to do04
What should I do before taking it?
Tell a clinician, especially about heart, hormone or medicine questions.
Show the label
All eight names.
Mention heart history
And any heartbeat symptoms.
Stop at a reaction
A racing heartbeat or fainting needs care.
Ordering05
What about the capsules?
The order buttons lead to checkout. This site makes no claim for the extract.
Check your medicines with a clinician first.
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FAQ06
SodaPeak questions people ask
What is icariin?
A compound found in Epimedium, called horny goat weed.
Does SodaPeak state its icariin content?
No. The label lists horny goat weed extract with no amount.
What does MSK say about evidence?
That scientific evidence to support use of Epimedium is limited.
Who should avoid it?
MSK says people with hormone-sensitive cancers or heart disease.
Who wrote this07
Written and reviewed by
Pages built from the label, the seller brief and linked NIH, FDA, CDC, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a USA Authorized SodaPeak Retailer. It is not the manufacturer, and it does not name one. We earn money when you buy through our order links.
Sources and links (2)
- Epimedium (horny goat weed), About Herbs Memorial Sloan Kettering Cancer Center, 2023
- 21 CFR 101.36 - Nutrition labeling of dietary supplements Electronic Code of Federal Regulations (U.S. National Archives / GPO), 2026
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