Disclosure: This review contains paid (affiliate) links to the official Locerin website. If you buy through them, I may earn a commission at no extra cost to you. It does not change how I evaluate the evidence.
Medical Disclaimer: This review is for informational purposes only and is not medical advice. Talk to a qualified healthcare professional before starting any supplement, especially if you are pregnant, breastfeeding, take medication, or have a health condition.
Table of Contents
- Quick Verdict
- What Is Locerin?
- Ingredient Analysis
- Safety, Side Effects & Interactions
- Pros and Cons
- Who Should (and Shouldn't) Consider Locerin?
- How Locerin Compares
- Frequently Asked Questions
- Final Verdict
More hair in the shower drain. A wider part. A ponytail that feels thinner than it used to. When that happens, it is tempting to reach for the first supplement that promises thicker hair. The harder question is whether a formula has real evidence behind it, and whether it fits the cause of your shedding.
Locerin is a capsule supplement for women with thinning hair, sold by NuviaLab. It combines a patented pea sprout extract with silica-rich plants, nettle, biotin, and a set of vitamins and minerals.
How this review was done: I haven't personally used Locerin. This is a research-based review. I checked the official label, compared each key ingredient and dose with published studies, and scored the formula on five criteria explained in the verdict.
Quick Verdict
- Evidence Score: 2.9/5 (based on published research, not personal testing)
- Best for: Women with mild, diffuse shedding who have ruled out medical causes and want a simple daily nutrition add-on.
- Not for: Pregnancy or breastfeeding, diagnosed female pattern hair loss that needs treatment, patchy or sudden hair loss, or anyone who wants proven results.
- Biggest strength: A fully disclosed label, with the pea sprout extract at the same 100 mg dose used in its human study.
- Biggest limitation: No published trial on the finished formula, and the key ingredient study was small, uncontrolled, and run by the ingredient maker.
If that trade-off works for you, view the Locerin label and the pack sizes on offer (paid link)
What Is Locerin?
Locerin is a food supplement in vegetarian-style capsules. The shell is hydroxypropyl methylcellulose, a plant-based material. Each pack holds 60 capsules, which is one month at the listed dose.
The official site says to take 2 capsules a day, preferably 30 minutes before a meal, with about 300 ml of water. The brand name on the label is Locerin by NuviaLab, and the company named is NuviaLab Limited. The site lists the European Union as the country of origin.
Key points from the official product pages, checked on 24 September 2026:
- Who it is not for: The label says it is not suitable for children, pregnant women, or breastfeeding mothers.
- Allergens: locerin.com gives no allergen statement. NuviaLab's product page shows allergen-free, dairy-free, gluten-free, and vegan-friendly icons, but no written allergen list. Check the physical label if you have allergies.
- Where it is sold: Ordering is online through the official website.
- Packages: Single packs and multi-pack bundles are offered. Bundles usually lower the cost per month. Check current pricing and refund terms on the official site, as they vary by country.
One thing matters more than any label claim. There is no published clinical trial on the finished Locerin formula. The study numbers you see on the sales page come from one ingredient, AnaGain™ Nu, tested on its own.
Ingredient Analysis
A quick rule before the details: research on an ingredient is not research on the product. An ingredient can show a result alone, at a certain dose, in a certain group. That does not prove the full Locerin blend will do the same for you.
Here is the full label per daily serving of 2 capsules, as listed on locerin.com.
| Ingredient | Per 2 capsules | Evidence level (hair) |
|---|---|---|
| Organic pea shoot extract (AnaGain™ Nu) | 100 mg | Limited |
| Horsetail herb extract (7% silica) | 100 mg | Limited, indirect |
| Bamboo shoot extract (70% silica) | 100 mg | Limited, indirect |
| Nettle leaf extract (4% polyphenols) | 100 mg | Early-stage |
| MSM (methylsulfonylmethane) | 100 mg | No verified hair study |
| Alfalfa herb extract | 75 mg | No verified hair study |
| Cayenne pepper fruit extract (2% capsaicin) | 50 mg | No verified hair study |
| Black pepper fruit extract (BioPerine®, 95% piperine) | 5 mg | Absorption aid |
| Magnesium (Aquamin™ Mg) | 112.5 mg | Supporting nutrient |
| Vitamin C | 80 mg | Supporting nutrient |
| Niacin | 16 mg | Supporting nutrient |
| Zinc | 10 mg | Supporting nutrient |
| Manganese | 1.8 mg | Supporting nutrient |
| Copper | 1 mg | Supporting nutrient |
| Biotin | 500 µg | Supporting nutrient |
| Selenium (SeLECT®) | 55 µg | Supporting nutrient |
AnaGain™ Nu (Pea Shoot Extract)
This is the headline ingredient. It comes from Mibelle Group Biochemistry, a Swiss ingredient company. Locerin uses 100 mg a day, the same dose used in the human study.
That study is Grothe et al., published online in Phytotherapy Research in 2019 (print issue 2020). In the oral part, 21 adults (18 women, 3 men) aged 22 to 63 took 100 mg daily for eight weeks. All reported heavy daily shedding at the start.
- A lab technician counted the hairs each person collected from their comb or brush.
- The average count fell by about 34% after 28 days and stayed lower at day 56.
- No side effects were reported.
The limits are important. There was no placebo group and no blinding. Shedding can also ease on its own over time. The study was funded by Mibelle, and all authors worked there. It measured shedding, not new growth. A separate part of the same paper tested a 2% topical fluid on 10 people, which tells us little about capsules.
Evidence level: Limited. It is a promising start, not proof.
Horsetail and Bamboo (Silica Sources)
Both extracts are standardized for silica. By the label, bamboo supplies about 70 mg of silica and horsetail about 7 mg a day. Together that is roughly 36 mg of elemental silicon.
The best hair study on silicon used a different form. Wickett et al. (Archives of Dermatological Research, 2007) gave 48 women with fine hair either choline-stabilized orthosilicic acid (10 mg silicon) or placebo for nine months. The silicon group lost less hair strength and had thicker strands than at baseline.
Locerin's silicon amount is not low next to that study. But the result may not transfer to plant silica, which can absorb differently, so the two doses are not directly comparable. I found no human hair trial on horsetail or bamboo extract at these doses. Evidence level: Limited, indirect.
Nettle Leaf
Nettle is often linked to DHT, the hormone involved in pattern hair loss. The evidence here is lab-based. In a 2023 cell study (Pekmezci and Türkoğlu, Georgian Medical News), nettle leaf extract lowered the gene activity of 5-alpha-reductase type II in skin cells.
Cell results do not show what 100 mg of extract does in the body. Evidence level: Early-stage.
Biotin
Biotin is the best-known hair vitamin, but the evidence is weak. A 2024 review in the Journal of Clinical and Aesthetic Dermatology (Yelich et al.) found only three studies that met its criteria. The highest-quality one, a placebo-controlled trial, found no difference in hair growth.
The authors concluded that biotin's use as a hair supplement is not backed by high-quality studies. True biotin deficiency is a different case, but it is uncommon. Locerin's 500 µg is well above the adult Adequate Intake of 30 µg set in the US. Evidence level: Supporting nutrient, with little hair benefit expected if your levels are normal.
Zinc, Selenium, and Other Minerals
Zinc, selenium, copper, manganese, and magnesium are present at close to one day's requirement or less. The NIH Office of Dietary Supplements lists hair loss (alopecia) among the signs of zinc deficiency. Correcting a real shortfall makes sense. Adding more when your levels are fine has no clear hair benefit.
Selenium works both ways. Locerin's 55 µg matches the adult RDA. But the NIH notes that long-term excess selenium can itself cause hair loss. So avoid stacking several selenium products.
BioPerine®, Cayenne, MSM, and Alfalfa
- BioPerine® (piperine): Added to help absorption, not to grow hair. Locerin's site lists 5 mg, while NuviaLab's own product page lists 2 mg. I used the brand site figure.
- Cayenne (capsaicin): Supplies about 1 mg of capsaicin by the label's 2% standard. I found no verified oral hair study for it.
- MSM and alfalfa: Common in hair blends. I found no verified human hair trials for these at these doses.
- Vitamin C and niacin: Basic nutrients at about 100% of the reference value. The label does not say which form of niacin is used.
Want to see these figures at the source? You can check each dose above against the manufacturer's own ingredient table (paid link)
Safety, Side Effects & Interactions
Most ingredients are common and low-dose. Still, a few points deserve attention before you start.
Who should skip it or ask a doctor first
- Pregnancy and breastfeeding: The label says it is not suitable. Children should not take it either.
- Lupus or other autoimmune disease: The Johns Hopkins Lupus Center advises people with lupus to avoid alfalfa sprouts because of L-canavanine. Locerin uses alfalfa herb extract, and the label does not say whether it contains this compound. Ask your doctor first.
- Liver disease: The NIH LiverTox database rates horsetail as a probable rare cause of liver injury. It advises against long-term high doses in people with liver disease.
- Kidney problems or diuretic use: Horsetail has shown a diuretic effect in studies. Check with your doctor if fluid balance matters for you.
Doses compared with upper limits
I compared the label with the US Tolerable Upper Intake Levels (ULs) from the NIH Office of Dietary Supplements.
- Zinc 10 mg vs UL 40 mg
- Selenium 55 µg vs UL 400 µg
- Copper 1 mg vs UL 10 mg
- Magnesium 112.5 mg vs UL 350 mg (from supplements)
- Niacin 16 mg vs UL 35 mg (from supplements)
- Manganese 1.8 mg vs UL 11 mg
- Vitamin C 80 mg vs UL 2,000 mg
- Biotin 500 µg: No UL has been set.
Locerin alone stays below every UL listed. The risk comes from stacking. Add up your multivitamin, other hair products, and fortified foods.
Drug and lab-test interactions
- Antibiotics: Zinc and magnesium can reduce absorption of tetracycline and quinolone antibiotics. The NIH advises taking the antibiotic at least 2 hours before or 4 to 6 hours after.
- Osteoporosis drugs: Magnesium can reduce absorption of bisphosphonates such as alendronate. Space them at least 2 hours apart.
- Penicillamine and thiazide diuretics: The NIH lists both as zinc interactions.
- Medicines with narrow dose ranges: Piperine can raise blood levels of some drugs. A 2026 systematic review in Frontiers in Pharmacology advised monitoring when piperine is combined with phenytoin. If you take prescription medicine, ask your pharmacist.
- Blood tests: Biotin can distort some lab results, including thyroid and troponin tests. The NIH notes that even a single 10 mg dose has affected thyroid tests. Locerin's 500 µg is far lower, but tell your doctor you take biotin before any blood work.
Side effects and warning signs
The pea sprout study reported no side effects over eight weeks. No safety data exist for the full formula. Pepper and cayenne extracts may upset a sensitive stomach. If you notice stomach pain, rash, or anything unusual, stop and speak to a doctor.
Shedding can also be a symptom of something else. It is worth reading about the thyroid and nutrient triggers worth ruling out first before you rely on any supplement.
Pros and Cons
Pros
- Fully disclosed label. Every ingredient has a stated amount, and most botanicals list a standardization.
- Key ingredient at the studied dose. AnaGain™ Nu is included at 100 mg, the same amount used in its human study.
- Minerals stay below upper limits. Doses sit around one daily requirement, which keeps the risk low when taken alone.
- Clear stated exclusions. The label names pregnancy, breastfeeding, and children as groups who should not use it.
Cons
- No trial on the finished product. All evidence comes from single ingredients.
- The key study is weak. It had 21 people, no placebo, and was funded and run by the ingredient maker.
- Biotin adds little for most people. Reviews find no high-quality support for biotin in people without a deficiency.
- Some label gaps. There is no written allergen list (only icons on one site), the niacin form is not named, and two official NuviaLab pages list different BioPerine® amounts.
- Online only, with a long trial period. You buy through the official site and need several months of use to judge it, which raises the total cost.
Who Should (and Shouldn't) Consider Locerin?
Locerin may suit you if: you are an adult woman with mild, diffuse shedding. You have already checked the common medical causes with a doctor. Your diet may be low in some nutrients, and you want a single daily capsule. You are also comfortable with limited evidence and a few months of use.
Locerin is probably not a good fit if:
- You are pregnant, breastfeeding, or planning a pregnancy soon.
- Your hair loss is patchy, sudden, or comes with scalp pain, redness, or scarring. These need a dermatologist.
- You have been diagnosed with female pattern hair loss. Proven treatments come first, and a supplement is at most an add-on.
- You already take a multivitamin or hair gummy with biotin, zinc, or selenium.
- You have lupus, liver disease, or take medicines listed in the safety section.
If you are not sure which group you are in, start by learning how to tell everyday shedding apart from true hair loss. It can save you months on the wrong fix.
For readers who fit the first group, the next step is simply to check the buying details where you live.
If you match that profile, read the ordering and refund conditions that apply in your country (paid link)
How Locerin Compares
Against other hair supplements: Many hair formulas lean on biotin and hide doses inside blends. Locerin discloses every amount and includes a branded ingredient with at least one human study. That puts it ahead on transparency. But like most products in this category, it has no trial of its own.
Against proven treatments: For female pattern hair loss, doctors can offer treatments such as topical minoxidil. These have far more evidence than any oral supplement. Locerin should be seen as a possible add-on, not a replacement.
Against fixing a deficiency directly: If a blood test shows low iron, zinc, or vitamin D, targeted treatment from your doctor is more precise than a broad blend.
If your part is widening or your crown looks thinner, see why female pattern thinning looks different and what helps it.
Frequently Asked Questions
Does Locerin work?
No published study has tested the finished Locerin formula, so no one can say for sure. Its main ingredient, a pea sprout extract, cut hair shedding by about a third in a small study of 21 adults. That study had no placebo group and was funded by the ingredient maker. Other ingredients, such as biotin and minerals, mainly help if you are low in them. Locerin may help some women with mild shedding, but results are not guaranteed.
How long does Locerin take to work?
There is no product data to answer this. In the pea sprout study, shedding counts dropped by day 28 and stayed lower at day 56. Hair grows slowly, so any change in thickness would take longer to notice. Plan on at least two to three months before judging it. If shedding gets worse or new symptoms appear, stop and see a doctor.
Does Locerin have side effects?
No side effects were reported in the pea sprout study, but the full formula has no published safety data. Pepper and cayenne extracts may upset a sensitive stomach. The label says it is not for children or pregnant or breastfeeding women. Biotin can affect some blood test results, so tell your doctor before lab work. Zinc and magnesium can interact with some antibiotics and osteoporosis drugs.
Where can I buy Locerin?
Locerin is ordered online through its official website. Prices, bundle options, and refund terms vary by country, so check them on the official site before ordering. Listings on other sites may not come from the manufacturer, which makes it harder to confirm freshness or claim a refund. Buying from the official source is the safest way to get the genuine product.
Is Locerin legit?
Locerin is a real product sold by NuviaLab Limited, with a full ingredient list and dose for each item on its website. That is more open than many hair supplements. Being a real product is not the same as being proven, though. The key ingredient has one small, company-funded study, and the full formula has not been tested. Treat the sales page claims with care.
Final Verdict
| Criterion | Score | Why |
|---|---|---|
| Core ingredient evidence (30%) | 2.0 | Key ingredient has one small open-label study; no product trial; biotin support is weak. |
| Dose match (20%) | 3.0 | AnaGain™ Nu matches its study dose; silica comes in a different form than the best study. |
| Label transparency (15%) | 3.5 | All amounts disclosed; no written allergen list, niacin form missing, BioPerine® figure differs between sites. |
| Safety profile (20%) | 3.5 | All doses below ULs; manageable antibiotic, piperine, biotin lab-test, and alfalfa cautions. |
| Value & buying terms (15%) | 3.0 | Online-only purchase and a multi-month trial; refund terms need checking by country. |
| Overall Evidence Score | 2.9/5 | Weighted average of the five criteria. |
Locerin is a transparent formula built around one interesting ingredient. The pea sprout extract is used at the right dose. But its only human study was small, uncontrolled, and company-run. The rest of the formula is mainly basic nutrition.
Set realistic expectations. If Locerin helps, it will most likely be with mild shedding, and it may take a few months to judge. Results in a small study are averages, not a promise for every person. It will not reverse female pattern hair loss or treat an underlying medical problem.
See a doctor or dermatologist if your hair loss is sudden, patchy, or getting worse. The same applies if it comes with fatigue, weight change, or irregular periods. Those signs point to causes that need testing, not a supplement.
If you have weighed all of this and still want to try it, look over the current Locerin bundles before you choose (paid link)
About this review: Written, researched, and fact-checked by Vijidsu, founder of this site. I checked the citations, label amounts, and study details against the official product page and the original studies. I am not a medical professional, this review was not checked by one, and I have not used Locerin myself. See how we research and review products for the full process.
