Natural Vitamin D3
Vitamin D3 naturally occurs almost exclusively in animal sources as the bioactive form of vitamin D. Plants, such as lichens and various fungi, contain only very small amounts of the much less effective form of vitamin D2. Lanolin, the wax found in sheep's wool, is a proven source for obtaining bioactive vitamin D3. A multi-stage process, which includes gentle extraction and intensive purification, results in a highly pure D3 crystallisate that is used as the active ingredient for our vegetarian Sunferol® D3 formulation.
All-Trans Vitamin K2
Vitamin K2 exists in various forms, which have different levels of effectiveness. Vitamin K2 MK-7 is considered by far the most effective form of K2 today. However, since vitamin K2 molecules occur in a variety chemical structures (the so-called cis–trans isomers of vitamin K2), there are considerable differences in efficacy even between different vitamin K2 MK-7 compounds. It is believed that only the trans forms can be utilised by the body.
Our original Sunquinone® K2 is a branded active ingredient with a uniquely high MK-7 all-trans content of approximately 99.8%. The consistently high purity is ensured by independent laboratory tests.
This product has been tested free from selected doping substances within the scope of the Cologne List®. The Cologne List® is a doping prevention initiative which publishes products which have been independently tested for selected doping substances by a world-class laboratory in food supplement analysis. As a partner of the Cologne List®, we ensure greater transparency in a very heterogeneous market and support athletes, teams, clubs and associations in the assessment of these products.
Absolute Purity: No Hidden Additives
Our branded active ingredients Sunferol® D3 and Sunquinone® K2 are specially manufactured for Sunday Natural – made from natural raw materials and with particular emphasis on purity and quality.
Conventional vitamin D3 + K2 active ingredients are often mixed with a whole range of questionable additives, including synthetic vitamin E, ascorbyl palmitate, silicon dioxide, modified starch, sucrose, denatured vegetable oils and maltodextrin. However, our active ingredients are specially manufactured according to our specifications, thereby avoiding such hidden additives. The purity of these raw materials means only a small amount of bioactive vitamin E needs to be added as an antioxidant to ensure optimal stability and shelf life.
To maintain the excellent quality of our products, they are regularly tested in an independent laboratory for active ingredient content, freshness and possible contaminants such as heavy metals.
MCT Coconut Oil for Optimal Absorption & Protection
Vitamins D and K2 are fat-soluble vitamins that can only be absorbed by the body when combined with fats. For this reason, Sunday Natural's vitamin D3 + K2 is dissolved in high-quality MCT oil. In contrast to other carrier oils (such as olive oil), pure MCT oil offers optimal protection for fat-soluble vitamins, thus ensuring maximum stability of the active ingredients. The medium-chain fatty acids in the carrier oil constitute valuable nutrients themselves.
Simple & Precise Dosage
Oils are particularly convenient to use and are better suited for people who have difficulty swallowing capsules or tablets. They also offer the advantage of supporting the natural absorption of the fat-soluble vitamins D3 and K2. All of our oils come in environmentally friendly glass bottles with high-quality glass pipettes, which enable precise dosing.
