L-Theanine Powder — 100% Pure Amino Acid · No Fillers · 50g to 100kg
Magnesium L-Theanine 650mg Capsules UK — 325mg Magnesium Glycinate + 325mg L-Theanine | No Fillers | Vegan HPMC | In-House Encapsulated
Betaine HCl Powder — Min 96% Assay, 763mg Betaine Per Gram
L-Theanine 600mg Capsules — Higher Strength Than 500mg · No Fillers · Vegan HPMC
Vegan L-Tyrosine 500mg Capsules UK — Fermentation-Derived | HPMC Vegan Capsule | No Fillers | Charge Products
L-Arginine HCl 750mg Vegan Capsules – USP Grade, No Fillers
Betaine HCl 800mg Capsules UK — Pure Betaine Hydrochloride | Homocysteine | No Fillers | Vegan | 60 to 500 Capsules
Nitric Oxide PRO 750mg Capsules UK — L-Arginine HCl | Amino Acid | No Fillers | Vegan HPMC | In-House Manufactured | Charge Products
Skin Glow L-Arginine 750mg Capsules UK | Amino Acid Skin Nutrition | No Fillers
L-750 Capsules UK — L-Arginine HCl 750mg | Nitric Oxide Skin Nutrition | Anti-Ageing Amino Acid | 60 to 500 Capsules
L-Tyrosine Powder UK: Vegan Fermented Free-Form Amino Acid, USP Grade, 100g to 10kg
Vital Q + T Men's Formula | CoQ10 250mg + L-Tyrosine 250mg | 500mg Vegan Capsules UK
T-Force Men's Complex | Dual Formula 25mg Zinc + 760mg L-Arginine HCl Capsules UK
Instantised BCAA 2:1:1 Powder UK — Vegan, Cold Water Soluble
Beauty Supplement UK | O SO PRETTY 750mg L-Arginine Capsules
Amino acid supplements: how to read the label
Three things decide whether an amino acid product is what it says. The form: "L-arginine" and "L-arginine HCl" are different substances, and the salt weighs more. The real content per serving: 750mg of L-arginine HCl is about 620mg of L-arginine; 800mg of betaine HCl is about 610mg of betaine. What was it tested against: a certificate with an assay percentage and an identity test, not just "conforms". Every product page in this collection gives all three.
Which products carry authorised health claims?
In Great Britain a supplement can only use health claims from the official register. Most single amino acids have none, and this collection says so plainly on each page. The exceptions:
| Ingredient | Authorised claim | What it means |
|---|---|---|
| Betaine | Betaine contributes to normal homocysteine metabolism | Homocysteine is an amino acid the body makes and then converts back to methionine. Betaine donates the methyl group that conversion needs. The claim applies at 500mg of betaine a day, and the label must say that more than 4g a day may significantly increase blood cholesterol. |
| Magnesium (in Magnesium L-Theanine) | 10 claims, including normal muscle function, normal psychological function and reduction of tiredness and fatigue | The magnesium carries the claims; the L-theanine carries none. |
| Zinc (in T-Force Men's Complex) | 18 claims, including normal fertility and reproduction and maintenance of normal testosterone levels | The zinc carries the claims; the L-arginine carries none. |
| L-tyrosine, L-theanine, L-arginine, BCAA, phenylethylamine | None | Sold on form, amount and testing. No health claims are made for them anywhere on this site. |
What is in this collection
Instantised BCAA 2:1:1 Powder
Leucine, isoleucine, valine; fermented from corn, cold-water soluble.
Shop now →Magnesium L-Theanine 650mg Capsules
325mg magnesium glycinate + 325mg L-theanine; magnesium claims apply.
Shop now →Also L-arginine HCl 750mg, under other names:
L-750 →Nitric Oxide PRO →Skin Glow →O SO PRETTY →
What these amino acids are
| Ingredient | What it is | Found in | Our form |
|---|---|---|---|
| L-Tyrosine | Non-essential amino acid the body makes from phenylalanine | Meat, fish, dairy, eggs, nuts, pulses | Free-form, fermentation-derived; capsules and powder |
| L-Theanine | Amino acid found almost only in tea leaves; not a protein building block | Green and black tea | Green tea extract standardised for theanine; capsules and powder |
| L-Arginine | Conditionally essential amino acid | Turkey, chicken, fish, dairy, pumpkin seeds, nuts, chickpeas | Hydrochloride salt, USP grade; capsules |
| Betaine | Trimethylglycine, a methyl donor derived from glycine | Beetroot, spinach, quinoa, wholegrains | Hydrochloride salt, min 96% assay; capsules and powder |
| BCAA | The three branched-chain essential amino acids: leucine, isoleucine, valine | All complete proteins | 2:1:1 instantised powder, fermented from corn |
| Phenylethylamine | A naturally occurring monoamine, not an amino acid | Trace amounts in some foods | In combination with L-tyrosine; capsules |
Capsules or powder?
| Capsules | Powder | |
|---|---|---|
| Dose | Fixed, pre-measured | You weigh it; milligram scales needed |
| Taste | None | Several amino acids are bitter |
| Fillers | None in ours; HPMC shell only | Not applicable |
| Cost per gram | Higher | Lowest |
| Pack sizes | 30 to 500 capsules | 50g to 25kg or more |
| Best for | Daily use, first purchase | Larger amounts, mixing, trade and formulating |
Why buy amino acids from Charge Products
Form and content declared
Salt or free-form, and the real amino acid per serving, on every page.
Tested, with numbers
Assay percentages and identity tests from the certificate, not "conforms".
No fillers in capsules
Amino acid and HPMC shell. No stearate, silica or rice flour.
Filled in Essex
Our own encapsulation unit, 5 Star Food Hygiene Rating.
164,000+ verified sales
Public marketplace record, 99.7% positive.
Same-day dispatch
Before 3:30pm Monday to Friday; free UK delivery over £10.
Wholesale · Trade · B2B
Amino Acid Supplements Wholesale UK
Bulk L-theanine, L-tyrosine, betaine HCl and BCAA powders to 25kg and beyond, loose capsules by the thousand, and white label supply, from UK-held stock with certificates of analysis for your technical file. No fixed minimum: tell us the quantity.
Request a trade priceFrequently asked questions
Are amino acid supplements medicines?
No. Everything in this collection is a food supplement. None is a licensed medicine and none is intended to diagnose, treat, cure or prevent any disease.
Which amino acids have authorised health claims in the UK?
In this range, betaine: it contributes to normal homocysteine metabolism, and the claim needs 500mg of betaine a day. L-tyrosine, L-theanine, L-arginine, BCAAs and phenylethylamine have no authorised claims, so we make none for them. Products combining an amino acid with a nutrient, such as magnesium or zinc, carry that nutrient's claims.
Capsules or powder?
Same ingredient, different format. Capsules are a fixed, taste-free dose; ours have no fillers. Powder costs less per gram, suits larger amounts and mixing, but needs milligram scales and some amino acids taste bitter.
What does HCl mean on the label?
Hydrochloride: the amino acid bound to hydrochloric acid to make a stable salt. It is common for L-arginine and betaine. The salt weighs more than the amino acid alone, so an honest label gives both figures. Our L-arginine HCl 750mg provides about 620mg of L-arginine; our betaine HCl 800mg provides about 610mg of betaine.
Are these products vegan?
Our capsules use HPMC shells with no gelatin, and our L-tyrosine is fermentation-derived. Each product page states its own dietary status; check the page for the one you are buying.
Do you sell amino acids in bulk or wholesale?
Yes. Powders run to 25kg on some lines and capsules are supplied loose by the thousand, from UK-held stock. Certificates of analysis are available to trade buyers. Use the contact page for a trade price.
Where are they dispatched from?
Southend-on-Sea, Essex. Orders before 3:30pm Monday to Friday leave the same day. Free UK delivery over £10, and 30-day returns on unused, sealed packs.
Which should I start with?
Buy the single amino acid you actually want, in the smallest pack. The product pages explain the form, the real content per serving and the cautions for each one, including who should not take it.
Guides worth reading first
Shop other collections
Magnesium and minerals →NMN and NAD+ →Vitamins →Herbal and botanical →Sleep support →All products →
Food supplements, not medicines. Not intended to diagnose, treat, cure or prevent any disease. Health claims on this site are the authorised Great Britain claims for the named nutrient in approved wording; no claims are made for L-tyrosine, L-theanine, L-arginine, BCAAs or phenylethylamine. Read the cautions on each product page before use, and consult your GP if you take medication or have a medical condition. Not for under 18s, or during pregnancy or breastfeeding without advice. Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. Charge Products is a trading name of Big Idea Services Ltd, Company No. 11645389, Unit 1, 8 Towerfield Road, Towerfield Industrial Estate, Southend-on-Sea, Essex SS3 9QE.