Nutricost is the value workhorse of the category: 180 single-capsule servings of 600 mg epimedium at roughly $0.08 a capsule — the lowest cost-per-serving on the list and, at six months a bottle, by far the longest supply. For anyone who has decided to take horny goat weed consistently over the long run and wants maximum days-per-dollar from a clean single-herb extract, it's the obvious choice. Two honest caveats keep it at #4 rather than higher. The label discloses '10% flavones' rather than icariin specifically — a slightly looser spec than the icariin-standardised extracts above it — and the listing makes no prominent third-party-testing claim, which for a botanical is a real (if not disqualifying) gap. It also uses a gelatin capsule, so it won't suit vegans. And the standing frame applies: icariin is a genuine in-vitro PDE5 inhibitor (Xin 2003), but standalone horny goat weed has no robust human evidence for sexual outcomes. Buy Nutricost for clean, cheap, long-run epimedium with a measured expectation. Here's the full breakdown.
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Read the complete Horny Goat Weed guide →The weakest axis: the label discloses '10% flavones', a broader class than icariin, so you don't know the exact icariin content. It's still a standardised extract from a reputable value brand, but less precise than the picks that state an icariin percentage directly (Double Wood 20%, Toniiq 40%, Nootropics Depot min. 50%). Adequate, but the looser spec is the trade for the rock-bottom price.
600 mg per capsule in a simple one-capsule serving — a decent, easy-to-dose amount, slightly more raw extract than Nature's Way's or Swanson's 500 mg. The single-capsule format is a genuine convenience over the two-capsule servings elsewhere. Solid on raw dose; just read it against the looser 'flavones' standardisation rather than a stated icariin figure.
Single-herb Epimedium sagittatum (leaf & stem) with a clean, short ingredient list from an established value brand — but no prominent independent third-party potency or heavy-metal test on the listing, and a gelatin capsule. Held below the explicitly-tested picks (Double Wood's heavy-metal panel, Nootropics Depot's COAs); the QC is reasonable for the price but not a standout.
The standout axis: roughly $0.08 per 600 mg capsule across 180 single-capsule servings — the lowest cost-per-serving and longest supply on the entire list (about six months at one a day). For long-run daily use this is unbeatable value, and it's the entire reason to buy this product over a higher-disclosure but pricier extract.
Scored measured and non-medical. A clean single-herb extract at a sustainable price is a sensible way to run a traditional tonic over months. But the human efficacy evidence for Epimedium alone (libido/erectile function) is weak, and the flavones-not-icariin disclosure adds a little uncertainty about active content, so we reward the affordability and clean formula rather than promising an outcome.
“Standardised epimedium extract, 600 mg per capsule.”
The 600 mg single-capsule serving is clearly stated and consistent — a decent, simple dose from a reputable value brand. Accurate on the raw extract amount and the convenient one-cap format.
“Standardised to 10% flavones.”
True as stated, but worth flagging: 'flavones' is a broader compound class than icariin specifically, so the listing doesn't tell you the exact icariin content. It's a genuine standardised extract, just to a looser spec than the icariin-percentage picks. Accurate but less precise than '10% icariin'.
“Pure, clean single-herb formula.”
The product is single-herb Epimedium sagittatum with a short ingredient list and no blend — genuinely clean. The one caveat for some buyers is the gelatin (non-vegetarian) capsule, which is disclosed and is part of how the price stays low.
“Supports libido and male vitality.”
The honest caveat. Icariin is a real in-vitro PDE5 inhibitor (Xin 2003, PMID 12646997) and Epimedium has human bone-density RCT data (Zhang 2007, PMID 17419678), but there is NO robust human trial showing standalone horny goat weed improves libido or erectile function. Fair as traditional vitality-tonic framing; overstated if read as a proven benefit — and the flavones-not-icariin spec adds further uncertainty about active content.
At roughly $0.08 per capsule across 180 single-capsule servings, Nutricost is the cheapest way to run horny goat weed on this list, and a single bottle lasts about six months. For a traditional tonic that should be taken consistently over weeks-to-months to assess, that low running cost and long supply genuinely matter — they make it realistic to actually sustain the protocol without re-buying constantly. If days-per-dollar is your metric, nothing else here competes.
The looser standardisation is the price of the price. '10% flavones' standardises to a broad compound class rather than to icariin specifically, so unlike Double Wood's '20% icariins' or Toniiq's '40% icariins', you can't pin down the exact icariin content. It's still a real standardised extract from a reputable brand — not a red flag — but it's less informative on the one spec that matters most in this category. Buyers who want potency certainty should pay up for an icariin-percentage pick.
Most well-dosed extracts here need two capsules per serving; Nutricost delivers its 600 mg in a single capsule. Over a six-month run that's half the pills to swallow and half the counting, which makes consistency easier. It's a small thing, but for a daily tonic, low friction is what keeps you taking it — and the single-cap format is a genuine practical plus alongside the price.
Two honest limitations. First, the listing makes no prominent third-party-testing claim — for a plant extract, an independent heavy-metal/potency test (which Double Wood states and Nootropics Depot publishes) is reassuring, and Nutricost leans on standard value-brand QC instead. Second, the capsule is gelatin, so it's not vegan or vegetarian. Neither is disqualifying for the target buyer, but both are reasons a purity- or diet-focused shopper might choose a different pick.
Nutricost's job is to make a long daily run of a traditional tonic cheap and easy — and it does that better than anything else on the list. What it can't do is change the evidence: standalone horny goat weed has a genuine in-vitro PDE5 mechanism (Xin 2003) and human bone data (Zhang 2007), but no robust human trial for libido or erectile function, and the flavones-not-icariin spec adds a little uncertainty about active content. So this is the most affordable way to take a traditional vitality herb, not a proven performance product. Bought on that basis, it's the clear value pick.
Nutricost is the obvious pick for one specific buyer: the person who has decided to take horny goat weed daily over the long run and wants maximum days-per-dollar. At roughly $0.08 a capsule across 180 single-capsule servings, it's the cheapest cost-per-serving and longest supply on the list, in a clean single-herb formula with a convenient one-cap dose. For sustaining an affordable traditional-tonic protocol over months, nothing here beats it. The reasons it sits at #4 rather than higher are honest and specific: it discloses '10% flavones' rather than an icariin percentage (so you have less certainty about the active compound), it makes no prominent third-party-testing claim, and it uses a gelatin capsule. If potency disclosure matters most, Double Wood (#2, 20% icariins) or Toniiq (#1, 40%) are better; if you need vegan, Nature's Way (#3); if you want stated testing, Double Wood or Nootropics Depot (#5). And the standing caveat applies — icariin is a real in-vitro PDE5 inhibitor (Xin 2003) but standalone horny goat weed has no robust human evidence for sexual outcomes. For clean, cheap, long-supply epimedium bought with a measured expectation, Nutricost is the value answer.
Check Nutricost · Epimedium sagittatum std. to 10% flavones, 600 mg/capsule · single-herb · 180 capsules on AmazonThe other budget pick — 120 capsules of a standardised 10%-icariin extract that, unlike Nutricost, states GMP manufacturing and independent purity/potency testing. Slightly costlier per serving but with a testing claim and a disclosed icariin spec.
See it on the list →Step up in everything but price — a disclosed 20% icariins at a full 1000 mg serving with a stated heavy-metal testing program. The pick if you want certainty on icariin and testing rather than the rock-bottom cost.
See it on the list →The vegan alternative — a trusted-brand 10%-icariin extract in non-GMO vegetable capsules. Choose it over Nutricost if you need a vegan capsule and want an icariin-specific standardisation, accepting a higher cost per serving.
See it on the list →In vitro, icariin inhibited cGMP-specific PDE5 with an IC50 of 0.432 µmol/L — the mechanistic basis for the herb's reputation, but a bench/enzyme finding, not proof of a human erectile-function benefit. Especially relevant here since the label standardises to flavones, not icariin specifically.
60 mg/day icariin preserved bone mineral density over 24 months in postmenopausal women — the strongest human RCT for Epimedium, and a bone outcome rather than a sexual one. Cited to keep expectations calibrated to the actual evidence base.
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