We typically process and ship Pro D3 orders within 4-5 business days. Standard shipping times vary depending on your location and option of shipping chosen. You can find more details about our shipping policy on our Shipping & Delivery page.

We offer a 30-day return policy for items in new, unused condition. If you are not satisfied with your purchase, please contact our customer support team to initiate a return. Please note that certain conditions and exclusions may apply. You can find more information on our Returns & Refunds page.

Yes, we offer international shipping the Republic of Ireland. Please check our Shipping & Delivery section for additional details.

Once your order is shipped, depending on your choice of shipping, you may receive a tracking number via email. You can use this tracking number to track the status of your package. If you have any issues with tracking your order, please reach out to our customer support team.
If you have selected standard shipping then please allow 3-8 business days before contacting if you have not received your order.

The Pro D3 range, with the yellow sunshine background on the packaging, is made using Colecalciferol from sheep's wool.
Sheep are not harmed during this process.

The Pro D3 Vegan range, with the green sunshine background on the packaging, is made using Colecalciferol from lichen algae.

The following is applicable for Pro D3 Liquid Drops and Pro D3 Vegan Liquid Drops, both 20ml pack size.

Each drop contains 100 IU of Vitamin D3.
1 Drop = 100 IU
4 Drops = 400 IU
10 Drops / 0.5ml = 1000 IU
20 Drops / 1ml = 2000 IU

All Pro D3 products are manufactured at Synergy Biologics, purpose built, dedicated HACCP certified, GMP certified facility, in Walsall, West Midlands, England, UK. The entire manufacturing site, production lines, processes, information collection and management systems are certified as Halal, Kosher, Vegetarian and Vegan.
Synergy Biologics are HACCP certified, ISO 9001 certified, GMP certified.

All Pro D3 products are formulated to be free from all recognised food allergens (Food Standards Agency - Food Allergens and Intolerance) including Crustaceans, Dairy, Egg, Fish, Lactose, Milk, Nuts (Ground Nuts and Tree Nuts), Peanuts, PEG, Sesame, Soya, Wheat and Yeast. 
Our on-site Pharmacists are always available to answer any specific query on allergens.

For further suitability information, please visit the following page - Suitability of Pro D3.

Pro D3 products are never and will never be tested on animals.

Professional and Elite Athletes choose Pro D3 because they will only supplement with products from manufacturers that they trust, to avoid inadvertently taking prohibited substances.
Pro D3 Sport 20K is also independently tested for the absense of WADA Prohibited Substances by LGC.

A certificate of analysis is issued for every batch of Pro D3 products and is available immediately on request.
Simply email - technical@synergybiologics.co.uk -  with the Pro D3 product name, batch number and expiry and we will aid you with your request.