Mendorex Reviews (2026): Ingredients, UK Price and What the Research Says

Mendorex is sold online as a "Men's Vitality & Testosterone Support Formula", and UK searches for it have climbed fast this autumn. Most people reading Mendorex reviews want to know what's in the capsule, whether it can live up to the marketing and who is behind it.

We read the official UK website and order page, the terms and conditions, the privacy policy, the help centre and the research on each ingredient. We haven't taken Mendorex ourselves, and there are no invented customer stories here. Our editorial policy explains how we work.

What Is Mendorex?

Mendorex is a food supplement, not a medicine. Each bottle holds 30 capsules (net weight 17.01 g), a month's supply at one a day. The label reads "Men's Vitality Complex" and "Advanced Testosterone Support".

In the UK, food supplements are sold as foods: unlike medicines, they aren't licensed by the MHRA before sale and may not claim to treat or prevent disease. Mendorex's UK terms describe it the same way.

Who sells it? The UK terms (last updated 5 October 2026) name the seller as Haruki Limited, company number UN 486997, Agios Ambrosios 16, Anglisides, 7571 Larnaca, Cyprus. A separate platform operator runs the website and payments: the terms name Aura Health LLC (Wyoming, USA), while the privacy policy names Haur B.V. Customer service works through a help-centre contact form, and the privacy policy lists hello@mendorex.com. The same eight ingredients, in the same amounts, are sold in Germany under another brand name.

What the company says. The UK site says Mendorex is "formulated to support healthy testosterone production and help you maintain vitality as you age", using ingredients derived from natural sources and made in an EU facility. It also says testosterone falls by 1–2% a year after 30, a figure we check below.

Mendorex Ingredients: What's on the Label

The official site shows this "Nutritional Information" panel per capsule:

NRV is the nutrient reference value used on UK labels. Worth noting:

• Doses are disclosed. Many men's formulas hide amounts in a "proprietary blend"; Mendorex doesn't, so you can compare it with the research.
• The full ingredient list isn't online. The capsule shell and any bulking agents aren't shown, so check the bottle if you avoid gelatine or have allergies.
• The niacin form isn't stated. "Niacin" can mean nicotinic acid or nicotinamide, which matters for tolerability (see below).

What the Research Says About Each Ingredient

Zinc

Great Britain kept the EU list of authorised health claims, and one reads: "Zinc contributes to the maintenance of normal testosterone levels in the blood." At 11 mg per capsule, Mendorex qualifies.

The science behind it is about deficiency. In a small study (Prasad et al., 1996), testosterone fell sharply in four young men whose zinc intake was restricted for 20 weeks, while in nine older men with marginally low zinc, six months of supplements (about 30 mg of zinc a day) roughly doubled it. That supports topping up a low intake, not extra zinc for men who already get enough from food. EFSA, the European Food Safety Authority, sets an upper limit of 25 mg a day from all sources.

Niacin (vitamin B3)

Niacin's authorised claims include that it "contributes to the reduction of tiredness and fatigue". None links it to testosterone, and most people get enough from meat, fish, flour and eggs.

L-citrulline and L-carnitine

The body turns L-citrulline into L-arginine and then nitric oxide, which helps blood vessels relax. The lowest daily dose we found in a human trial was 1.5 g, given for a month in a small single-blind study of 24 men (Cormio et al., 2011). A Mendorex capsule has 150 mg, a tenth of that. Our guide to L-arginine and L-citrulline covers the research at study doses.

L-carnitine helps carry fats into mitochondria to be used for energy. Healthy adults make their own in the liver and kidneys, and we found no research on 150 mg a day for testosterone or vitality.

Pine bark, maca, grape skin and saffron

Maritime pine bark extract is rich in plant antioxidants called proanthocyanidins. A Cochrane review of 27 trials with 1,641 people across 10 chronic conditions rated all the evidence very low certainty and found no firm conclusions possible on how well it works or how safe it is (Robertson et al., 2020).

Maca is an Andean root. In a 12-week placebo-controlled trial, men aged 21 to 56 took 1.5 g or 3 g a day; they reported higher sexual desire from week eight, but their testosterone didn't change (Gonzales et al., 2002). Mendorex has 50 mg of an extract of unknown strength.

We found no studies testing 15 mg of grape skin extract or 5 mg of saffron extract for testosterone or energy in men.

Does Mendorex Work?

There is no published trial of Mendorex; PubMed, the main medical research database, has nothing on it. Zinc can help maintain normal testosterone levels, mainly in men low in zinc, and niacin contributes to the reduction of tiredness and fatigue. The other six ingredients are either far below study doses or have weak evidence.

The age-related fall in testosterone is real but gradual. The NHS says it's about 1% a year from around age 30 to 40 and unlikely to cause problems in itself. In the Massachusetts Male Aging Study of men aged 40 to 70, total testosterone fell 0.8% a year between age groups and 1.6% a year when the same men were retested seven to ten years later. Men without chronic illness, regular medication, obesity or heavy drinking had 10–15% higher levels of several male hormones (Feldman et al., 2002).

Midlife tiredness, low mood and low sex drive often have nothing to do with hormones. The NHS names stress, depression, anxiety, poor sleep, poor diet, lack of exercise, alcohol and smoking as possible causes. True late-onset testosterone deficiency is uncommon, more likely with obesity or type 2 diabetes, and diagnosed from symptoms plus blood tests your GP can arrange. An online questionnaire can't measure a hormone.

Erection problems deserve their own GP visit. The NHS says they are common over 40, but if they keep happening they can be linked to high blood pressure, high cholesterol, diabetes, heart or hormone problems, and may signal a treatable health condition.

Mendorex Reviews: What Buyers Say

We don't publish reports we can't verify. The company says Mendorex has 4.8 stars from more than 5,000 members, without explaining how that was measured, and the customer quotes on its order page are published by the company itself. If you try it, get a baseline blood test if you have symptoms, add up zinc and niacin from all your supplements, and review honestly after six to eight weeks.

How to Take Mendorex

The order page says one capsule a day with food and a full glass of water, ideally in the morning; the help centre suggests before breakfast or lunch, swallowed whole. Don't take more than one a day, and don't double up after a missed dose. It isn't intended for anyone under 18.

Possible Reactions and Who Should Skip It

The help centre says most users tolerate Mendorex well and that more than one capsule a day may cause mild stomach upset. Two points come from the label:

• Niacin form. If it's nicotinic acid, it can cause flushing (temporary redness and warmth of the skin). EFSA sets the upper limit for nicotinic acid at 10 mg a day and for nicotinamide at 900 mg, so 20 mg of nicotinic acid would exceed it. Ask customer service which form is used.
• Zinc total. 11 mg is modest if your total from all supplements stays under 25 mg a day.

Also skip it if you're under 18, already take zinc or niacin elsewhere, or expect a quick, dramatic change.

Mendorex Price in the UK, Delivery and Returns

At the time of writing, the official UK order page lists:

The page also shows higher crossed-out prices (£79.95, £59.95 and £69.95 per bottle). The checkout total includes taxes and shipping, and the terms say you'll be told before paying if import charges may apply. Check the official site for current pricing.

One-off packs. We saw no subscription option on the order page. The terms also cover optional extra offers shown before, during or after checkout, so read each screen after payment before confirming anything.

Delivery and cancellation. The terms estimate 1–3 business days to process and about 2–14 business days to ship, with tracking by email. You can cancel within one hour if the order hasn't entered processing. Refusing delivery doesn't count as a return.

The guarantee. The order page advertises a "30-day money-back guarantee". The terms (sections 9.2 to 9.8) and help centre set these conditions:

• Start the return within 30 calendar days after delivery.
• Bottles must be unopened, unused, in the original packaging and bought on the official website.
• Contact customer service first for instructions and the return address.
• You pay return postage (unless the seller made a mistake), and original shipping isn't refunded.
• Refunds take about 7–10 business days after the return arrives, plus up to 10 for your bank.

The order-page FAQ describes the guarantee more broadly than this, so if it matters to your decision, ask customer service to confirm the conditions in writing before opening a bottle. The terms list return addresses only in the Netherlands and the US, so expect international postage. The help centre also mentions a partial refund if you keep the product, without saying how much. Your statutory consumer rights are unaffected, the terms say.

Where to Buy Mendorex in the UK

Mendorex is sold through its official website, priced in pounds. At the time of writing, the site lists no shops, pharmacies or other sellers, and its footer says it is not a pharmacy. The returns policy covers only orders placed directly on the official site.

Mendorex Pros and Cons

Mendorex FAQ

Bottom Line

Mendorex is more open than many men's formulas: every dose is listed, and its zinc qualifies for the authorised claim on normal testosterone levels. Beyond zinc and niacin, it mostly adds small amounts of ingredients studied at far higher doses or with weak evidence, the product itself has never been trialled, and the guarantee covers unopened bottles only.

If you suspect low testosterone, start with a GP blood test. If your levels are normal, weight, activity, sleep, alcohol and stress will likely matter more than another supplement. If you still want to try Mendorex, buy one bottle first and ask which form of niacin it uses. Browse more in Men's Health & Vitality, and if night-time trips to the toilet are your main concern, our guide to choosing a prostate supplement is a better starting point.

References

1. NHS. The 'male menopause'. NHS website, 2022. link
2. NHS. Erectile dysfunction (impotence). NHS website, 2023. link
3. Feldman HA, Longcope C, Derby CA, et al. Age trends in the level of serum testosterone and other hormones in middle-aged men: longitudinal results from the Massachusetts male aging study. Journal of Clinical Endocrinology & Metabolism, 2002. link
4. Prasad AS, Mantzoros CS, Beck FW, Hess JW, Brewer GJ. Zinc status and serum testosterone levels of healthy adults. Nutrition, 1996. link
5. Commission Regulation (EU) No 432/2012 establishing a list of permitted health claims made on foods, as it applies in the UK. legislation.gov.uk. link
6. European Food Safety Authority. Overview on Tolerable Upper Intake Levels as derived by the Scientific Committee on Food (SCF) and the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA). EFSA, 2025. link
7. Cormio L, De Siati M, Lorusso F, et al. Oral L-citrulline supplementation improves erection hardness in men with mild erectile dysfunction. Urology, 2011. link
8. Robertson NU, Schoonees A, Brand A, Visser J. Pine bark (Pinus spp.) extract for treating chronic disorders. Cochrane Database of Systematic Reviews, 2020. link
9. Gonzales GF, Córdova A, Vega K, et al. Effect of Lepidium meyenii (MACA) on sexual desire and its absent relationship with serum testosterone levels in adult healthy men. Andrologia, 2002. link