SunVit-D3 Limited was founded in 2009 by CEO David Allen and is a rapidly growing company devoted to Vitamin D3 supplementation. The Company's products are manufactured in the UK according to GMP principles and guidelines to ensure our customers products are of a high standard.

The SunVit-D3 Team

David Allen – CEO & Founder

As founder of ADAllen Pharma, David has played a fundamental role in the company’s continued success, overseeing its assured progress from a national operation to a major international supplier. A Fellow of the Royal Pharmaceutical Society of Great Britain, where he has served as both Vice President and Treasurer, David has chaired a number standing committees and is a leading voice for the enforcement of high professional standards within the industry.

Richard Allen – Finance Director

Richard was appointed Finance Director in October 2013. Prior to this Richard qualified as a Chartered Accountant in 2003 and spent 3 years in audit at Deloitte LLP. After progressing to Audit Manager, Richard moved to Inchcape Retail as Financial Reporting Manager where he managed a UK consolidation team, then moved to Tate & Lyle plc in 2009 where he managed the restatement of the Annual Report following a significant restructuring. Richard’s most recent appointment was at Ladbrokes Plc.

Barry Neill – Product Manager

Barry has a Bsc. in Biochemistry with Nutrition, ABPI qualified and over 20 years experience in the pharmaceutical industry.  He is also a former champion bodybuilder and strength athlete.

Tony Vincent – Digital Sales Manager

Tony has a strong digital sales and marketing background from his previous role at Kevin Nash Group within the B2B and B2C sales territories. Tony also has NVQ level 1 accreditation acquired in 2015 and has a great deal of experience in social media and online marketing.

Bonnie Sharp – Finance Officer

Bonnie joined the SunVit-D3 team in 2004 after working in the City for 19 years. She started her career in Credit Control (Commodities) before joining a Scottish Merchant Bank and switching to Corporate Foreign Exchange.

Kirstie Hayes – Accounts Administrator

Kirstie joined SunVit-D3 in 2015. Prior to this, she has worked in an accounts environment for the past 20 years at O2 Wholesale and at Easynet Global Services as Credit Controller. In previous roles Kirstie has excelled herself by reaching cash targets, reducing overdue debt.

SunVit-D3 Vitamin D3 Information

  • Vitamin D3 is manufactured in a variety of forms including tablets, capsules and liquid preparations
  • The film-coated tablets, soft capsules and liquid are free from dairy and gluten.
  • All our Vitamin D3 and Calcium supplements are manufactured in the United Kingdom.
  • By taking SunVit-D3 supplements on a regular basis, you can enjoy the long term health benefits of improved wellbeing.
  • For improved health, we recommend between 400 IU and 2,000 IU taken daily.
  • We recommend the higher strengths are taken under the supervision of your healthcare professional.
  • SunVit-D3 is approved by The Vegetarian Society and The Vegan Society so complies with many specialised dietary requirements.
  • All our Vitamin D3 products are certified Halal by the Halal Monitoring Committee.
  • Each strength has bold and distinctive colour coded packaging to assist the user experience. All packaging is environmentally friendly.
  • Vitamin D contributes to the following under EFSA guidance under EU regulations:
    • maintenance of bones and teeth
    • maintenance of normal muscle function
    • normal function of the immune system
    • normal growth and development of bone in children
    • role in the process of cell division

When sunlight falls on the body’s surface – the skin in our case – it synthesises to form vitamin D3. It is then circulated in the bloodstream and converts to its active form as a hormone in the kidneys. As the body ages, the skin’s ability to convert vitamin D3 into the active form is reduced.

Taking one or two tablets of SunVit-D3®1,000 IU daily will maintain healthy vitamin D3 levels and ensure that your body has enough vitamin D3 to enable you to lead a healthy, happy lifestyle and improve your wellbeing. It will also raise blood serums within a few months and allow individuals to benefit from this essential vitamin.

Higher strengths of SunVit-D3® supplements are available without a prescription and are not intended for long term usage. We would stress that these must be taken after advice from your Healthcare Professional.

Why Choose SunVit-D3?


Approved by the Vegetarian Society


Certified as halal by the Halal Monitoring Committee


Approved by Informed Sport