Bespoke berberine supplement manufacturing
British VitaTech is a berberine manufacturer for supplement brands: we develop and make custom berberine supplements matched to each market's current rules, and the brand owns the formula.
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Berberine capsules and coated tablets, formulated market by market
In-house in our UK facility, we work as a berberine manufacturer for supplement brands, making custom berberine capsules in HPMC shells, film-coated tablets, powders and stick packs, and gummies at modest amounts per piece. We build GB and EU formulas on standardised plant extracts and keep isolated berberine hydrochloride for US formulas. Every batch is assayed for berberine by HPLC and checked for plant identity by HPTLC, and comes with a certificate of analysis and a batch release confirmation.
Berberine is a bitter, bright yellow alkaloid found in plants such as barberry, goldthread and goldenseal, and brands use it in metabolic health formulas. As of October 2026, berberine can be sold in food supplements in the UK, the EU and the US, with each formula matched to the current rules of the markets it will be sold in. Berberine sits within our weight management supplement manufacturing.
We specify every berberine ingredient by its form, its plant source and its berberine content, measured by HPLC. Your formula is yours: you own the specification, the dose and the label we build together.
- Berberine hydrochloride: the usual form in US supplements, a yellow crystalline salt extracted from plants or made by synthesis. It exists as an anhydrate, a monohydrate, a dihydrate and a tetrahydrate, and commercial material is usually a mix of the last two (Zhang and colleagues, IUCrJ, 2023). Calculated from the formulas and IUPAC atomic weights, berberine makes up about 90% of the anhydrous salt, 82% of the dihydrate and 76% of the tetrahydrate. So we calculate every label value from the measured berberine content and state whether the label declares the salt or berberine. We use the isolated salt in US formulas.
- Standardised plant extracts: extracts of the plant part, specified to a berberine content. Several plants supply berberine, including Berberis aristata, Berberis vulgaris, Coptis species, Hydrastis canadensis and Phellodendron amurense, so the species and the plant part go on every specification. This is the form we use for GB and EU formulas.
- Dihydroberberine: a reduced form sold in the US for its uptake, which we use in US formulas.
- Absorption systems: phospholipid complexes and micelle systems change the ingredient as well as its uptake, so we keep them for US formulas and build GB and EU products on established forms.
Berberine in the UK, EU and US, with a replacement formula ready
The table sets out the position as of October 2026, in line with the panel on this page.
| Market | Status, as of October 2026 | Claims |
|---|---|---|
| European Union | Permitted with conditions. Food supplements can contain berberine plant extracts under each member state's rules for botanicals; our EU formulas use standardised plant extracts. | No authorised claim for berberine, and botanical claims remain on hold. A formula can carry "Chromium contributes to the maintenance of normal blood glucose levels" when it is at least a source of chromium. |
| Great Britain | Permitted. No Great Britain law restricts berberine plant extracts in food supplements; our GB formulas use standardised plant extracts. | The same chromium claim, from the GB register. Claims that a supplement acts on GLP-1 or compares with prescription medicines are medicinal claims under UK advertising rules. |
| United States | Permitted. Sold as a dietary supplement ingredient, with claims kept to structure and function; US formulas can use berberine hydrochloride, dihydroberberine or plant extracts. | Structure and function claims, such as support for a healthy metabolism, backed by competent and reliable scientific evidence, notified to FDA and carrying FDA's standard disclaimer. A claim to substitute for a medicine or augment its action is a drug claim. |
EU rules on berberine are under review, so we design EU formulas with a ready alternative. We review berberine's status every quarter on our regulation watch page, and every GB and EU berberine product has its replacement formula, built on nutrients and fibres with authorised claims, ready in its development file.
Low uptake, enzyme interactions and a salt that changes with water
No set maximum, so a dose by design
France's food safety agency ANSES found proven pharmacological effects from 400 mg of berberine a day in adults (ANSES, 2019). As of October 2026, Great Britain and the US set no berberine-specific maximum and the EU has no harmonised one, though national rules vary, so the daily amount is a design decision we make with you for each market, with the serving split, the warnings and the evidence file built around it. Our US formulas start at modest daily amounts.
Poor uptake and the dihydroberberine case
Berberine is poorly absorbed. In rats, its absolute oral bioavailability was 0.68% (Chen and colleagues, AAPS PharmSciTech, 2011). P-glycoprotein, a transporter that pumps it back into the gut, contributes, and extensive first-pass metabolism in the intestine is thought to explain much of the loss (Kwon and colleagues, Pharmaceutics, 2020). That is the case made for dihydroberberine: in a pilot crossover trial in five men, 100 mg of dihydroberberine gave a higher peak plasma berberine level than 500 mg of berberine (Moon and colleagues, Nutrients, 2022). It is a small pilot, and it measured uptake, not benefit.
CYP enzymes and label warnings
In healthy men, repeated doses of berberine (300 mg three times a day) reduced the activity of CYP2D6, CYP2C9 and CYP3A4, enzymes that clear many medicines (Guo and colleagues, European Journal of Clinical Pharmacology, 2012). ANSES warns that berberine can interact with numerous medicines and cause digestive side effects, and advises children and adolescents and pregnant and breastfeeding women not to take these products (ANSES, 2019). We write those findings into every label as warnings for each market, and we position berberine as a food supplement, not an alternative to a medicine.
Hydrates, humidity and yellow stains
Water is the main variable. The anhydrate and monohydrate of berberine hydrochloride absorb moisture and convert to the dihydrate at 12% relative humidity, and above 70% the dihydrate becomes the tetrahydrate (Zhang and colleagues, IUCrJ, 2023). So we set humidity limits for weighing and filling, measure water on every lot and confirm berberine content in the final pack with stability studies. HPMC capsule shells carry 4% to 6% moisture against 13% to 16% for gelatine (Al-Tabakha, 2010), which makes them the better match for a salt that changes form with water. Berberine is also intensely bitter and stains equipment yellow, so every run ends with dedicated cleaning.
Film coats hide berberine's colour and bitterness
- Capsules: the core format, in HPMC shells; our capsules are GMP certified. See capsule and tablet manufacturing.
- Tablets: film-coated tablets hide the colour and the bitterness and carry larger daily amounts in fewer units.
- Powders and stick packs: berberine in a drink needs strong taste masking, so powders suit blends where it is a small part of the serving; see powder supplement manufacturing.
- Gummies: possible at modest amounts per piece, with heavy masking and an active assay on every batch as standard.
Bitterness and colour go through our flavour and taste masking work at concept stage. Combination formulas pair berberine with chromium, which carries an authorised claim in GB and the EU, or with fibres; formulas that add green tea extract also carry its EU limit on EGCG and its label warnings. Companion nutrition for people using GLP-1 medicines is a different product, built on protein, fibre and micronutrients; see GLP-1 support supplement manufacturing. We make every format in our UK facility, which is ISO 9001, HACCP and GMP certified by BSI, and FDA registered.
Humidity limits, then a verified clean after every berberine run
- Specify. We set the form, the plant source, the berberine content, the label basis and the target markets with you, and design the replacement route for GB and EU formulas at the same time.
- Source. Every lot comes from a supplier that has passed our supplier approval, reviewed annually, with a certificate of analysis stating berberine content, species and plant part.
- Weigh and blend. Materials are weighed against the batch record within the humidity limits set for the product, under our allergen management plan with yellow colour coding, then blended and checked for uniformity.
- Fill or compress. Capsules are filled and checked by weight; tablets are compressed and film-coated; powders are filled into tubs or sealed into stick packs.
- Clean. Dedicated cleaning follows every berberine run and is verified before the next product.
- Pack. Each product goes into the pack its stability study approved, with a desiccant for capsules and tablets because the salt changes form with water, and every pack is coded with its batch number and best-before date.
- Label and release. Label verification on every batch is the critical control point in our HACCP plan, and quality control releases every batch against its specification.
Source plant and dose on a berberine manufacturer's certificate
Ask how the berberine on the label is proved, and from which plant. Every batch is tested by accredited partner laboratories (ISO/IEC 17025), and batch testing is part of every order:
- Berberine assay: by HPLC against a reference standard, at release and across shelf life.
- Identity: HPTLC fingerprinting to confirm the plant source, because several species share the alkaloid.
- Water content: by Karl Fischer titration or loss on drying, because the hydrate form shifts with humidity.
- Contaminants: lead, cadmium, mercury and arsenic by ICP-MS, pesticide residues for plant-derived material, and microbiology.
- Stability and dissolution: berberine content, appearance and dissolution tracked in the final pack.
Our quality system adds a HACCP study per product type, reviewed annually; three retained samples per batch, kept for shelf life plus one year; and a full mock recall, forward and backward with mass balance, in seconds. Nothing is dispatched without quality control sign-off. Our testing and batch release page sets out the full approach.
Every batch comes with a certificate of analysis and a batch release confirmation. Development adds the documents your brand keeps: the formula, the specification, the stability data, the replacement formula for GB and EU products and a claims and label review for each market.
Every project runs through the same development stages: brief, evidence review, formulation, bench samples, blind sensory panels to settle the bitterness, a pilot batch on production equipment, stability in the final pack, and scale-up into routine production. Each stage leaves a record you keep.
Research and development is a paid stage that can be included with an order of the right size. Start your project with your target markets, and we will propose the form, the daily amount and a formula route for each.
References: ANSES, opinion on berberine-containing plants in food supplements (2019); Directive 2002/46/EC on food supplements (2002); Regulation (EU) No 432/2012 (2012); Guo and colleagues, European Journal of Clinical Pharmacology (2012); Chen and colleagues, AAPS PharmSciTech (2011); Kwon and colleagues, Pharmaceutics (2020); Moon and colleagues, Nutrients (2022); Zhang and colleagues, IUCrJ (2023).
Where it can be sold
-
EU
Permitted with conditionsAs of October 2026, food supplements can contain berberine plant extracts under each member state's rules for botanicals.
-
UK
PermittedAs of October 2026, no Great Britain law restricts berberine plant extracts in food supplements.
-
US
PermittedAs of October 2026, berberine is sold as a dietary supplement ingredient, with claims kept to structure and function.
Where this is going
To 2030
Down in Europe; up in the US with lower doses and stronger warnings
To 2036
US-centric; European formulas move to alternatives
What to watch
An EU restriction, while berberine's rules there are under review
Questions brands ask
Can berberine still be sold?
Yes. As of October 2026, berberine can be sold in food supplements in the UK, the EU and the US. EU food supplements can contain berberine plant extracts under each member state's rules for botanicals, no Great Britain law restricts plant extracts in food supplements, and in the US berberine sells as a dietary supplement ingredient, with structure and function claims only. We build GB and EU formulas on standardised plant extracts and keep isolated berberine hydrochloride for US formulas.
Which form of berberine should we use?
The market decides first. For US formulas, berberine hydrochloride is the usual form, and we calculate label values from its measured berberine content, because its hydrates carry about 76% to 90% berberine. For GB and EU formulas, we use standardised plant extracts, with the species and plant part on the specification. Isolated berberine hydrochloride, dihydroberberine and absorption systems stay in US formulas, and every lot is assayed by HPLC, whatever the form.
What daily amount do berberine supplements use?
It is a design decision we make with you for each market. France's ANSES found proven pharmacological effects from 400 mg a day in adults, and as of October 2026 Great Britain and the US set no berberine-specific maximum and the EU has no harmonised one, so we split the daily amount into servings and write the warnings alongside it. Our US formulas start at modest daily amounts, and film-coated tablets or HPMC capsules carry larger amounts in fewer units.
What claims can a berberine supplement make?
In GB and the EU, berberine has no authorised claim and botanical claims remain on hold, so formulas carry nutrient claims such as "Chromium contributes to the maintenance of normal blood glucose levels" when they are at least a source of chromium. In the US, structure and function claims need evidence, a notification to FDA and FDA's disclaimer. Comparisons with prescription medicines are out everywhere: UK advertising rules regard them as medicinal claims, and in the US they are drug claims.
Do you make berberine gummies?
Yes, at modest amounts per piece. Berberine is intensely bitter and bright yellow, so a gummy needs heavy taste masking and a colour that suits the product, and each piece carries far less than a capsule or tablet. Every gummy batch gets an active assay as standard, through accredited partner laboratories. For larger daily amounts, film-coated tablets and HPMC capsules are the better fit, and we say so at concept stage.
What happens to our EU formula if berberine is restricted?
You switch to the replacement route we designed at the start. For every GB and EU berberine product, we keep a reformulation built on nutrients and fibres with authorised claims, such as chromium and glucomannan, with its own stability and label work, so a restriction changes the formula rather than stopping the product. The US version can carry on unchanged, because the US has set no berberine-specific limit as of October 2026.
How do you test berberine supplements?
Every batch is tested by accredited partner laboratories, as part of every order. We assay berberine by HPLC against a reference standard, confirm the plant source by HPTLC fingerprinting, measure water because the hydrate form shifts with humidity, and test for heavy metals, pesticide residues and microbiology. Stability studies track berberine content, appearance and dissolution in the final pack, and quality control releases every batch against its specification.