Vitamin D plays a crucial role in supporting our overall health, from strengthening bones to supporting immune function. 

Vitamin D exists in two primary forms: vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). Vitamin D2 is derived from plant-based sources, while vitamin D3 is obtained from animal sources and can be synthesized by our skin upon exposure to sunlight. While both forms can raise vitamin D levels, research suggests that vitamin D3 is more effective and better utilized by the body.

Vitamin D3 has a higher bioavailability, meaning it is more readily absorbed and utilized by the body compared to vitamin D2. Studies have shown that vitamin D3 consistently raises and maintains blood levels of vitamin D more effectively. Consequently, many experts consider vitamin D3 the preferred form for supplementation.

While sunlight exposure is a significant source of vitamin D, certain foods can also contribute to your vitamin D intake. Fatty fish like salmon, mackerel, and sardines are excellent sources of vitamin D. Other food sources include fortified dairy products, eggs, and mushrooms exposed to ultraviolet (UV) light. However, it can be challenging to obtain adequate vitamin D levels through food alone, especially in regions with limited sunlight exposure.

NHS Guidelines on Vitamin D Supplementation

In the UK, the NHS recommends that everyone consider taking a daily vitamin D supplement, especially during autumn and winter months when sunlight exposure is limited.

This is particularly important for individuals with darker skin, elderly individuals, pregnant or breastfeeding women, and those who have limited sun exposure. The NHS advises a daily supplement of vitamin D3.

Introducing Napiers Vitamin D Spray:


Napiers Vitamin D Spray is a convenient and easy-to-use supplement designed to support your vitamin D intake. Formulated with vitamin D3, this one-a-day booster provides additional support for your vital micro-nutrient needs.


Simply spray it directly onto your tongue, making it ideal for those who have difficulty swallowing tablets or capsules. Napiers Vitamin D Spray offers a convenient solution to maintain optimal vitamin D levels and support your overall well-being.

Vitamin D is an essential nutrient that plays a vital role in our health. While both vitamin D2 and D3 contribute to raising vitamin D levels, vitamin D3 is considered superior due to its higher bioavailability.

While some food sources provide vitamin D, it can be challenging to meet our needs through diet alone, especially during seasons with limited sunlight exposure. Following NHS guidelines, considering vitamin D supplementation, and incorporating Napiers Vitamin D Spray can help ensure adequate vitamin D levels for overall health and well-being.