Ca-AKG – Welzo Ultra Purity tub, 60 capsules
Ca-AKG capsules – 1000 mg Ca-AKG per serving, lab tested, clean label
Ca-AKG enhanced absorption – Welzo Ultra Purity
Ca-AKG supplement facts – 1000 mg Ca-AKG per 2-capsule serving, 30 servings
Real people, real results – 26,000+ reviews on Trustindex
Welzo Ultra Purity supplements are free from gluten, dairy, GMOs, magnesium stearate, artificial colours and fillers
Take 2 capsules daily – results compound over time, take for 16 weeks for best results
Ca-AKG – an informed choice begins with understanding the ingredient
Ca-AKG – Welzo Ultra Purity lifestyle
Ca-AKG – Welzo Ultra Purity tub, 60 capsules
Ca-AKG capsules – 1000 mg Ca-AKG per serving, lab tested, clean label
Ca-AKG enhanced absorption – Welzo Ultra Purity
Ca-AKG supplement facts – 1000 mg Ca-AKG per 2-capsule serving, 30 servings
Real people, real results – 26,000+ reviews on Trustindex
Welzo Ultra Purity supplements are free from gluten, dairy, GMOs, magnesium stearate, artificial colours and fillers
Take 2 capsules daily – results compound over time, take for 16 weeks for best results
Ca-AKG – an informed choice begins with understanding the ingredient
Ca-AKG – Welzo Ultra Purity lifestyle
"Very quick delivery. Used 3 times, each order arrived the next day before 12:00"
Hugo Dover
"Reliable & original products, with fast next day delivery. Have been using Welzo for over a year now."
Elina Goulliard
"Welzo is great, lots of support from customer service who are easy to get a hold of and quick delivery."
Elizabeth Moore

Product Description

Welzo Ultra Purity™ Ca-AKG delivers 1000 mg of calcium alpha-ketoglutarate per 2-capsule serving. Alpha-ketoglutarate (AKG) is a key intermediate of the Krebs (citric acid) cycle that the body uses to generate cellular energy, and it is also a required co-substrate for the enzymes that regulate DNA and histone methylation. Natural AKG levels decline markedly with age, which is why the calcium-bound form has become one of the most researched compounds in longevity science.

Our Ca-AKG is produced to ≥99% purity, encapsulated in the UK under GMP conditions and third-party tested. Each serving also provides around 170 mg of calcium, which contributes to normal energy-yielding metabolism and the maintenance of normal bones.

Features & Benefits

  • 1000 mg Ca-AKG per serving – the dose used in the human studies on calcium alpha-ketoglutarate and healthy ageing.
  • Krebs-cycle intermediate – AKG sits at the heart of the cellular energy cycle and supports the enzymes involved in DNA methylation.
  • Source of calcium – around 170 mg per serving; calcium contributes to normal energy-yielding metabolism, normal muscle function and the maintenance of normal bones.
  • ≥99% purity – HPLC verified; certificate of analysis available on request.
  • Stacks well – commonly taken alongside Welzo Ultra Purity NMN, Trans-Resveratrol and TMG.
  • Clean label – vegan hypromellose capsule, no magnesium stearate, silicon dioxide, colours or preservatives.
  • Three sizes – 60, 120 or 180 capsules (1, 2 or 3 months at 2 a day), with multi-pack savings.

How to Take

Take 2 capsules daily with water, ideally together in the morning with breakfast, or as directed by a healthcare professional. Results compound over time – take consistently for at least 16 weeks for best results. Do not exceed the stated dose.

Ingredients

Calcium alpha-ketoglutarate (Ca-AKG) 1000 mg per 2 capsules (providing alpha-ketoglutarate ~830 mg and calcium ~170 mg); capsule shell: hydroxypropyl methylcellulose (hypromellose, vegan). Free from gluten, dairy, soy, nuts, GMOs, magnesium stearate and artificial additives.

Warnings

Food supplements must not be used as a substitute for a varied, balanced diet and healthy lifestyle. Not suitable for children. If you are pregnant, breastfeeding, taking medication or have a medical condition, consult your doctor before use. Store in a cool, dry place out of reach of children. Do not use if the seal is broken. If you take calcium supplements or have a history of kidney stones, speak to your doctor before use.

Ingredients/Specifications

Calcium alpha-ketoglutarate 1000 mg per 2 capsules (calcium ~170 mg); capsule shell: hypromellose. Free from gluten, dairy, soy, nuts, GMOs and magnesium stearate.

UK Delivery & Returns

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched next working day).

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

How to use

Please consult the product packaging for accurate instructions on how to use the product.

Nutritional Information

Supplement Facts
Serving Size: 2 Capsules
Servings Per Container: 30
Amount Per Serving
% NRV*
Ca-AKG
(Calcium alpha-ketoglutarate)
1000 mg  **
* % NRV = Nutrient Reference Value (EU/UK)
** No Nutrient Reference Value (NRV) established.
Other Ingredients:
HPMC Vegetable Capsule (Hypromellose).

Directions:
Take 2 capsules daily with food, ideally in the morning.

Food Supplement. Food supplements should not be used as a substitute for a varied, balanced diet and healthy lifestyle.

Store in a cool, dry place. Keep out of reach of young children.
GMP Certified
Lab Tested
Clean Label

Why it's Welzo

GMP manufactured in the UK, third-party tested for identity, purity and heavy metals, 1000 mg Ca-AKG per 2-capsule serving with no fillers or flow agents.

Ca-AKG 1000mg – Welzo Ultra Purity

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Welzo Ultra Purity™ Ca-AKG delivers 1000 mg of calcium alpha-ketoglutarate per 2-capsule serving.
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Verified Purity & Quality Third Party Testing

Every Ultra Purity™ product is manufactured to strict quality standards and tested to ensure ingredient identity, potency, and safety. Our formulations undergo rigorous quality control processes, including contaminant screening and purity verification, ensuring every batch meets high standards for consistency and reliability.

Developed by Health & Nutrition Experts

Welzo Ultra Purity™ supplements are developed with guidance from health professionals, nutrition specialists, and scientific researchers. Each formulation is built around ingredients supported by emerging nutritional science and modern research in metabolism, longevity, and microbiome health.

Ca-AKG – Welzo Ultra Purity tub, 60 capsules

Join 200,000 people improving their lives with Welzo

We are proud to have served over 200,000 customers and have over 27,000 5-star reviews. Welzo has become a trusted destination for high-quality supplements. Our misssion is providue scientifically formulated products, with maximum bioavalability at affordable prices. Join our growing community seeking effective nutritional support for health, performance, and longevity.

Transparent, Clean Label Formulations

We believe supplements should be honest and easy to understand. Every Ultra Purity™ product clearly lists its ingredients and dosages with no hidden proprietary blends. Our formulas are designed with clean ingredient profiles and without unnecessary additives or artificial fillers.

As Featured In

  • Excellent quality supplements

    I’ve tried quite a few different supplement brands over the years and the quality from Welzo has been noticeably better. The capsules are easy to take and I like that the ingredients and dosages are clearly listed. Delivery was also very quick. Will definitely be ordering again.

    James Harrington .- ★★★★★ 
  • Very impressed with the quality

    I ordered a couple of products from the Ultra Purity range after doing quite a bit of research. The packaging is very professional and the supplements feel high quality compared to many others I’ve tried. It’s reassuring to see transparent ingredient amounts rather than vague blends.

    Mimi - ★★★★★ 
  • Reliable supplements and fast delivery

    I’ve been using Welzo supplements for a few months now and the experience has been great. Orders arrive quickly and the products are well made. I appreciate that the brand focuses on purity and proper dosages rather than lots of unnecessary fillers.

    Brandy Perlin - ★★★★★ 
  • Great brand for premium supplements

    I now recommend Welzo to all my friends. Welzo has quickly become one of my go-to places for supplements. The Ultra Purity line feels well thought out and backed by proper research. Everything I’ve ordered so far has arrived quickly and been exactly as described.

    Mike Davies. - ★★★★★ 
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Content team: Dr Sameer Nakedar

Role: Chief Medical Officer

MBBS (London, UK), MRCGP, PGCert

Content team: Paola Drexlar

Role: Medical Content Writer, UK

BA (Hons) Journalism