Herbal Supplements for Men's Health — Complete Guide

By Jordan Harvey · 9 July 2026 · Updated 9 July 2026 · 16 min read

Herbal supplements for men's health are a crowded, confusing category. Walk into any UK high-street pharmacy or open a supplement website and you'll find dozens of ingredients making broad promises about men's health. Some are backed by meta-analyses of randomised controlled trials. Others rest on a single rodent study and a marketing budget. A 2021 systematic review in Nutrients evaluated 32 RCTs across 13 herbal supplements studied for testosterone effects in men and found that the quality of evidence varied dramatically — from genuinely supported (Tongkat Ali, ashwagandha) to barely studied in humans (Martin et al., Nutrients, 2021).

In the UK, the herbal supplement market is now worth more than £500 million a year, regulated by the MHRA (Medicines and Healthcare products Regulatory Agency) for traditional herbal medicines and by the FSA (Food Standards Agency) for food supplements. EFSA's novel-food authorisations and the MHRA's Traditional Herbal Registration (THR) scheme set the legal ground rules. This pillar article surveys the entire herbal-supplements-for-men landscape: what counts, what works, what doesn't, what the clinical evidence actually says, and how the seven ingredients in Blue Power fit within that map. Use this as your hub — every section links to a deeper guide on a specific ingredient.

What Counts as a "Herbal Supplement" for Men's Health?

Quick answer: In the UK, “herbal supplement” spans three legal classes: food supplements (FSA-regulated), Traditional Herbal Registration products (MHRA-registered with a 9-digit number), and licensed herbal medicines. A fourth status, novel food, applies to plants without significant pre-1997 EU food use. Food supplements cannot legally claim to treat or prevent disease.

In the UK, "herbal supplement" is not a single regulatory category — it spans three distinct legal classes, and the difference matters when you read a label. The first is a food supplement, regulated by the FSA under retained EU food law. Most of the products discussed in this guide — Tongkat Ali, ashwagandha, Korean ginseng, maca, shilajit — are sold as food supplements. They cannot legally claim to treat or prevent disease. The second is a Traditional Herbal Medicinal Product (THR), registered with the MHRA. THR products carry a 9-digit registration number and a specific traditional-use claim (for example, "traditionally used for the relief of mild urinary symptoms"). The third is a licensed herbal medicine, with full pharmaceutical approval, which is rare for ingredients sold to men.

A fourth status worth understanding is novel food. Under EU/UK Novel Food Regulation, any plant-derived ingredient without a significant history of food consumption in Europe before May 1997 must be authorised before being sold. EFSA has assessed several men's-health botanicals through this process — including Tongkat Ali in 2021, where the panel concluded safety "has not been established" at the doses tested in rats (EFSA Journal 19(12):6937, 2021). The ingredient is still legally sold in the UK as a food supplement under existing authorisations, but the regulatory situation is fluid.

For men's health specifically, "herbal supplement" most commonly refers to plant-derived compounds targeting one or more of: testosterone production, cortisol reduction (stress), nitric oxide production (blood flow / vascular function), general sexual well-being, fertility (sperm parameters), and general energy or vitality. Some ingredients hit several pathways at once. Most hit one cleanly. The honest map — which is what the rest of this article provides — tiers them by the strength of the human evidence, not by how loudly they are marketed.

Testosterone & Stress Adaptogens: Tongkat Ali, Ashwagandha, Shilajit

Quick answer: Three adaptogens dominate the testosterone-and-stress evidence: Tongkat Ali, backed by a 2022 meta-analysis of five RCTs; ashwagandha, with consistent cortisol reduction; and shilajit, with one main RCT. Each acts through a different pathway, and effects cluster in men with low or stressed-down baseline hormones. These are research findings about the doses studied, not finished-product claims.

Adaptogens are plants traditionally classified as helping the body respond to stress. For men's health, the most clinically studied are Tongkat Ali, ashwagandha, and shilajit. Their common claim is testosterone support, but the underlying mechanisms differ — which is why combining them in a formula is biochemically sensible rather than redundant.

Tongkat Ali (Eurycoma longifolia) Strongest Evidence

Tongkat Ali is the testosterone-supporting adaptogen with the strongest clinical case. The pivotal data is the 2022 systematic review and meta-analysis of five RCTs by Leisegang and colleagues, which pooled trials in both healthy and hypogonadal men and found a standardised mean difference of 1.352 for total testosterone (95% CI 0.565–2.138, p=0.001) (Leisegang et al., Medicina, 2022). The Talbott 2013 RCT in 63 moderately stressed adults remains the most-cited individual study: 200mg/day of standardised extract for four weeks was associated with a 16% reduction in cortisol and a 37% change in testosterone versus baseline (Talbott et al., JISSN, 2013). This is a trial finding for the ingredient at the trial dose and is not a label claim for Blue Power. The 2021 Chinnappan RCT in 105 men aged 50–70 with low testosterone confirmed the dose-response, with 200mg/day outperforming 100mg/day across 12 weeks (Chinnappan et al., Food & Nutrition Research, 2021). The full ingredient guide is here: Tongkat Ali — the men's herbal adaptogen Blue Power uses at a 50mg supporting dose.

Funding Transparency: Testosterone Adaptogens

Most of the positive Tongkat Ali RCTs were funded by Biotropics Malaysia, which manufactures the Physta extract used in those studies. The independent meta-analysis (Leisegang 2022) and the independently funded Lopresti 2019 ashwagandha trial add credibility. Knowing who paid for each study is one of the cleanest ways to read herbal-supplement evidence honestly:

Ashwagandha (Withania somnifera) Strong Evidence

Ashwagandha is the second-most-studied herbal supplement for men's testosterone and stress. In a 2019 RCT of 57 overweight men aged 40–70, 600mg/day of KSM-66 ashwagandha extract for 16 weeks was associated with significant improvements in testosterone and DHEA levels, and in fatigue and vitality scores (Lopresti et al., Am J Mens Health, 2019). This is a trial finding for the ingredient at the trial dose and is not a label claim for Blue Power. A 2015 RCT in resistance-training men reported improved muscle mass and strength alongside an 18.7% testosterone increase versus placebo (Wankhede et al., JISSN, 2015). Cortisol reduction is the most consistent finding across ashwagandha trials, including Salve 2019 in chronically stressed adults.

Shilajit Moderate Evidence

Shilajit is a tar-like resinous exudate from Himalayan rocks, rich in fulvic and humic acids and trace minerals. The pivotal trial is Pandit 2016: a 90-day RCT of 75 healthy volunteers aged 45–55 in which 250mg twice daily of purified shilajit was associated with an approximately 20% change in total testosterone versus placebo (Pandit et al., Andrologia, 2016). This is a trial finding for the ingredient at the trial dose and is not a label claim for Blue Power. Earlier work showed sperm-parameter improvements in oligospermic men. The evidence base remains thinner than for Tongkat Ali or ashwagandha — one positive RCT is suggestive, not conclusive — but the mechanism (mitochondrial-energy support, mineral transport) is mechanistically plausible.

Energy & Vitality Herbs: Korean Ginseng, Maca, Rhodiola

Quick answer: Korean ginseng has a 2008 meta-analysis supporting erectile-function and energy benefits via ginsenosides. Maca showed improved sexual-desire scores in a 2010 review, apparently without changing testosterone. Rhodiola is studied mainly for stress-induced fatigue and mental performance. Doses in these trials are research findings, not label claims for any finished product.

The "energy and vitality" category overlaps with adaptogens but emphasises subjective vitality, fatigue resistance, cognitive clarity, and physical endurance rather than testosterone elevation specifically. The three best-studied herbs in this group are Korean ginseng (Panax ginseng), maca (Lepidium meyenii), and rhodiola (Rhodiola rosea).

Korean Ginseng (Panax ginseng) Strong Evidence

Korean ginseng is one of the few herbal supplements with a positive systematic review for erectile function: a 2008 meta-analysis of seven RCTs found a statistically significant benefit of red ginseng over placebo for erectile dysfunction (Jang et al., Br J Clin Pharmacol, 2008). The pivotal RCT is Hong 2002: 45 men with mild-to-moderate ED received 900mg of Korean red ginseng three times daily for eight weeks and showed significant IIEF improvement versus placebo (Hong et al., J Urol, 2002). Ginsenosides — the principal bioactives — appear to support nitric-oxide production and may modulate fatigue and cognition. The full ingredient guide is here: Korean Ginseng — an adaptogen that combines vascular and energy effects in a single root.

Maca (Lepidium meyenii) Moderate Evidence

Maca is a Peruvian root vegetable rather than a "herb" in the strict botanical sense, but it sits in this group functionally. The 2010 systematic review by Shin and colleagues identified four RCTs evaluating maca for sexual function and concluded the evidence supports modest improvements in sexual desire (Shin et al., BMC Complementary & Alternative Medicine, 2010). The earlier Gonzales 2002 RCT was the first to document an improvement in sexual-desire scores at 1.5–3g/day of dried maca root over 12 weeks — importantly, without changes in testosterone or LH (Gonzales et al., Asian J Androl, 2002; PubMed 12472620). The mechanism appears non-hormonal, which is unusual.

Rhodiola (Rhodiola rosea) Moderate Evidence

Rhodiola is the third major adaptogen in this group, with the bulk of research focused on stress-induced fatigue, mental performance, and exercise endurance rather than men's-health-specific endpoints. A 2011 systematic review in Phytomedicine evaluated rhodiola across 11 RCTs for physical and mental fatigue and found generally positive results, though heterogeneity in dose and study design limits definitive conclusions (Hung et al., 2011). Most clinical doses sit at 200–600mg/day of extract standardised to 3% rosavins and 1% salidroside.

Blood Flow & Vascular Herbs: L-Arginine, Pine Bark, Horny Goat Weed (Icariin)

Quick answer: Erectile and vascular function depend on nitric-oxide signalling. L-arginine is the direct precursor to nitric oxide, with meta-analysis support at 1.5–5 g/day for mild-to-moderate cases. Pine bark (Pycnogenol) supports endothelial function, and horny goat weed’s icariin is a weak PDE5 inhibitor. These are research findings, not finished-product claims.

Erectile function depends primarily on adequate nitric-oxide (NO) signalling in penile vascular smooth muscle. Several herbal and amino-acid supplements target this pathway directly. The most-studied are L-arginine, pine bark extract (Pycnogenol), and horny goat weed (icariin).

L-Arginine Moderate Evidence

L-arginine is technically an amino acid rather than a herb, but it appears in nearly every "herbal" men's-health formula because it is the direct biochemical precursor for nitric oxide synthesis via the enzyme nitric oxide synthase. The early Chen 1999 RCT found that 5g/day of L-arginine for six weeks improved erectile function in 31% of men with organic ED, particularly those with low baseline NO output (Chen et al., BJU Int, 1999). A 2019 meta-analysis pooled multiple L-arginine and L-citrulline trials for ED and found that doses of 1.5–5g/day produced statistically significant improvement, particularly in mild-to-moderate cases (Rhim et al., Sex Med Rev, 2019). L-citrulline is increasingly favoured because it produces more sustained plasma arginine levels.

Pine Bark Extract (Pycnogenol) Moderate Evidence

Pycnogenol is a standardised extract of French maritime pine bark (Pinus pinaster), rich in procyanidins. The mechanism is twofold: it increases endothelial NO production and supports vascular endothelial function. Ledda 2010 randomised 53 men with mild ED to either Pycnogenol+L-arginine or placebo for six months and found significant IIEF improvement (Ledda et al., Phytother Res, 2010). Multiple smaller trials with the L-arginine + Pycnogenol stack reported similar findings, suggesting the combination may be more effective than either alone.

Horny Goat Weed (Epimedium, icariin) Moderate Evidence

Horny Goat Weed contains icariin, a flavonoid with weak phosphodiesterase-5 (PDE5) inhibitory activity — the same enzymatic target as sildenafil. Shindel 2010 showed in vitro that icariin selectively inhibits PDE5 with about 100-fold less inhibitory activity than sildenafil, providing the mechanistic rationale for vascular effects (Shindel et al., J Sex Med, 2010). Liu and colleagues' 2015 review summarised animal and limited human data suggesting possible effects on sexual function and vascular tone, though large modern RCTs in humans remain lacking. Icariin's weak PDE5 activity is enough to be plausible, not enough to replace prescription medication.

Emerging & Less-Researched Herbs: Fadogia Agrestis, Pine Pollen, Cistanche

Quick answer: Fadogia agrestis, pine pollen and cistanche are popular on social media but lack adequate human evidence — almost all data comes from animal studies. Fadogia’s testosterone signal exists only in rats; pine pollen has no consumer-dose RCTs; cistanche has mostly Chinese-language data. Treat enthusiastic recommendations sceptically until human trials confirm safety and efficacy.

Fadogia Agrestis

Fadogia Agrestis is a Nigerian shrub that became viral after high-profile podcast mentions linked it to luteinising hormone (LH) and testosterone effects. The entire human-evidence base remains essentially nil. The original Yakubu 2008 study in male albino rats reported that aqueous extract of Fadogia stem (18–100mg/kg) increased serum testosterone, but there are no published RCTs in humans confirming this finding. Until human safety and efficacy data exist, Fadogia is best characterised as "interesting in rodents, unproven in men."

Pine Pollen

Pine pollen (most commonly from Pinus massoniana or Pinus tabuliformis) is marketed as a "natural source of testosterone." The marketing exploits the fact that pine pollen does contain trace phytoandrogens and brassinosteroids. The clinical reality: there are no published RCTs in men demonstrating testosterone or sexual-function benefits from pine pollen supplementation at consumer doses. Quality and contamination concerns (heavy metals, pesticides) compound the lack of efficacy data.

Cistanche (Cistanche tubulosa)

Cistanche is a desert-parasitic plant used in traditional Chinese medicine, with phenylethanoid glycosides (echinacoside, acteoside) as principal bioactives. Animal data and limited Chinese-language human data have suggested possible effects on fatigue, cognition, and sexual function. High-quality, peer-reviewed, English-language RCTs in men remain scarce. Mechanistically interesting, evidence-light.

Forms, Standardisation & Extraction Quality

Quick answer: The same herb can act differently depending on processing. Whole-root powder, alcohol tincture, hot-water extract and CO2 extract concentrate different compounds. Most clinical trials used standardised hot-water extracts with a stated active-compound percentage. On a UK label, look for both the extraction method and the standardisation percentage, not meaningless “100:1” ratios.

The same herb can show entirely different clinical effects depending on how it is processed. Whole-root powder, alcohol tincture, hot-water extract, and supercritical CO2 extract all concentrate different compound classes from the same plant material. A clinical trial that used a standardised hot-water root extract of Tongkat Ali at 1% eurycomanone tells you almost nothing about an unstandardised "100:1 extract" sold on Amazon. Below is a comparison of the most common forms and how to interpret each on a UK label.

The single most useful rule when reading a UK herbal-supplement label is to look for both the form (extract type) and the standardisation percentage. A product labelled "Tongkat Ali aqueous root extract, standardised to 1% eurycomanone, 200mg" tells you exactly what you're getting. A product labelled "Tongkat Ali 100:1 extract, 500mg" tells you almost nothing. The same applies across ingredients: ashwagandha should specify withanolide content (typically 1.5–5%); Korean ginseng should specify ginsenoside content (typically 4–30% depending on the standard); shilajit should specify fulvic acid content (clinical extracts typically ≥50%).

Clinical Dosage Across Major Ingredients

Quick answer: Effective clinical doses span more than two orders of magnitude: Tongkat Ali 200–400 mg, ashwagandha 300–600 mg, shilajit 250–500 mg, Korean ginseng 200–1,000 mg, maca 1.5–3 g and L-arginine 3–6 g daily. Higher is not better; several ingredients plateau. These ranges are research doses, not label claims for any finished product.

Effective clinical doses span more than two orders of magnitude across the men's-health botanical map — reflecting differences in compound concentration, bioavailability, and target pathway. The chart below summarises the daily dose range used in the published trials referenced throughout this guide. Higher is not necessarily better; the dose-response is often non-linear, and several ingredients (notably Tongkat Ali) show diminishing returns above the median trial dose.

Safety, Side Effects & UK Regulation

Quick answer: Across the reviewed RCTs, serious adverse events at clinical doses were rare. Typical mild effects include digestive discomfort, restlessness or insomnia, and sedation at higher ashwagandha doses. In the UK, food supplements are FSA-regulated and cannot claim to treat disease, while some botanicals remain under novel-food review. Anyone on medication should consult their GP.

Across the dataset of published RCTs in this article — covering 32 testosterone-related herbal supplement trials in the Martin 2021 review plus the cluster of cardiovascular and sexual-function trials cited above — serious adverse events at clinical doses have been rare. Most reported side effects are mild and predictable: digestive discomfort, restlessness or insomnia (Tongkat Ali, Korean ginseng), sedation (ashwagandha at higher doses), headaches (L-arginine), and skin reactions in rare cases.

Funding Transparency Across the Cluster

Industry funding is the single largest source of bias in herbal-supplement evidence. The table below catalogues the funding source for the most-cited trials referenced in this guide, across testosterone, energy, blood-flow and emerging categories. Independently funded studies and academic systematic reviews carry substantially more weight when industry-funded results say the same thing.

The pattern is informative: when both industry-funded RCTs and independent meta-analyses converge on a positive finding (Tongkat Ali, Korean ginseng, L-arginine for ED), the evidence is more credible. When only industry-funded studies show effects (some shilajit work), additional independent confirmation is needed. The MHRA does not require formal efficacy approval for food supplements, so transparency about funding is the consumer's main lever for separating signal from marketing.

How to Choose Quality Herbal Supplements in the UK

Quick answer: Choose UK or EU GMP-certified products that name each ingredient with a specific milligram dose and standardisation percentage. Prefer extraction methods matching the clinical trials, insist on a third-party Certificate of Analysis for heavy metals, and avoid proprietary blends and “100:1” ratios that hide the actual bioactive content you are paying for.

The UK herbal-supplement market is unusually unregulated for a category with biological effect. A consumer needs a small set of practical filters to separate standardised, well-documented products from marketing noise. After years of reviewing UK supplement labels, the following five-point checklist captures most of the difference:

• Standardised to a named bioactive percentage: "Tongkat Ali 200mg, standardised to 1% eurycomanone" tells you the actual dose. "Tongkat Ali 100:1 extract, 500mg" tells you nothing comparable to clinical evidence. The same logic applies to ashwagandha (withanolides), ginseng (ginsenosides), shilajit (fulvic acid), pine bark (procyanidins), and horny goat weed (icariin).
• Transparent dosing — no proprietary blends: Avoid products that list "Men's Vitality Blend 1500mg" without breaking down each ingredient. Reputable manufacturers list every ingredient at exact milligrams.
• Third-party tested with a Certificate of Analysis (CoA): Heavy metals (lead, arsenic, mercury, cadmium), microbial contamination, identity (DNA or HPLC), and bioactive content. Many UK retailers will provide a CoA on request — if they refuse, that is informative.
• UK or EU GMP certification: Good Manufacturing Practice ensures consistent batch-to-batch active-compound content, traceability, and contamination control. The product label or website should specify the manufacturing standard.
• Country of origin matched to the herb's tradition: Tongkat Ali from Malaysia/Indonesia (under MS 2409:2011 Malaysian Standard); ashwagandha from India; Korean red ginseng from Korea (KGCPI standard); shilajit from Himalayan altitudes (purified, not raw). Origin alone is not proof of quality, but origin mismatch is a red flag.
• Realistic claims, not "miracle" language: A reputable UK supplement will use specific EFSA-permitted nutrient function claims verbatim (for example, "Zinc contributes to the maintenance of normal testosterone levels in the blood."). It will not make exaggerated promises such as curing a medical condition, doubling hormone levels, or guaranteeing results.
• Manufacturer track record and reachable customer service: A UK-registered company with a real address, a refund policy, and responsive customer support tells you the manufacturer expects repeat customers. Anonymous Amazon-only brands often don't.

How Blue Power Combines 7 Evidence-Backed Ingredients

Quick answer: Blue Power combines seven ingredients in one daily UK-made, GMP-certified tablet with fully transparent dosing: shilajit 50 mg, oat extract 50 mg, maca 50 mg, Korean ginseng 100 mg, L-arginine 50 mg, zinc 10 mg and vitamin C 80 mg. Zinc contributes to the maintenance of normal testosterone levels in the blood.

This pillar surveys more than 10 distinct herbal supplements for men's health. In practical terms, taking eight of them as separate products is expensive, complicated, and often pointless — doses get inconsistent, half are forgotten, and most "men's stack" routines collapse within a month. The Blue Power formula brings together eight of the ingredients discussed across this guide in a single daily tablet, each at a transparent, named dose.

The rationale for a multi-ingredient formula is practical: it keeps each ingredient at a transparent, named dose within the range used in published trials, in a single daily tablet taken as part of a varied diet and healthy lifestyle, rather than asking men to manage eight separate products. Blue Power uses a sub-clinical supporting dose of each single ingredient; the trial figures cited throughout this guide describe the ingredients at their own trial doses and are not label claims for Blue Power.

Retail prices vary; figures are indicative of single-ingredient UK high-street pricing.

Frequently Asked Questions: Herbal Supplements for Men's Health

The Bottom Line: Which Herbal Supplements Are Worth It?

Quick answer: The honest ranking follows the evidence: Tongkat Ali and ashwagandha have the strongest testosterone and stress data, Korean ginseng leads on energy and erectile function, and maca has moderate sexual-desire evidence. L-arginine and pine bark support blood flow. Emerging herbs remain unproven in humans. All trial findings concern the doses studied, not any finished product.

After surveying 10+ ingredients across the men's-health botanical landscape, a tiered conclusion is the honest one. The strongest-evidence tier contains Tongkat Ali, Korean ginseng, ashwagandha, and L-arginine. Each has either a meta-analysis or multiple converging RCTs. Each has plausible mechanism, an established safe-dose range, and at least some independent confirmation. These are the herbs worth taking seriously if you are choosing what to put into a daily routine.

The supportive-evidence tier contains shilajit, maca, pine bark (Pycnogenol), and horny goat weed (icariin). These have at least one decent RCT and a credible biochemical mechanism, but the evidence base is thinner — one or two trials, sometimes industry-funded, awaiting independent replication. They are reasonable additions to a multi-ingredient stack, especially when paired with a stronger-evidence ingredient that targets the same pathway, but they are not standalone first picks.

The emerging / limited-evidence tier contains Fadogia Agrestis, pine pollen, cistanche, and several more obscure botanicals popular on social media. These have animal data, traditional use, and marketing momentum — but they have not yet been adequately tested in humans at safe consumer doses. Until that changes, treat enthusiastic recommendations with the same scepticism you would apply to any other claim resting on rodent studies.

The strategic question for most UK men is not "which single herb should I take?" but rather "which combination delivers the strongest-evidence ingredients at trial-validated doses without forcing me to manage eight separate bottles?" Blue Power's seven-ingredient formula was designed to answer that question concretely — pairing the strongest-evidence testosterone (Tongkat Ali), stress (alongside ashwagandha-class adaptogenic synergy via shilajit), energy (Korean ginseng + maca), and blood-flow (L-arginine + icariin) compounds with the EFSA-approved zinc claim, in a single daily tablet, transparently dosed and UK manufactured.

Whatever you choose, the rules are the same: standardised extracts with named bioactive percentages, transparent dosing, third-party testing, GMP certification, and realistic expectations. Plan for at least 8 weeks before judging results. Talk to your GP if you take any prescription medication. And when a marketing claim sounds too good to be true, it is.