Why have you been prescribed Fultium-D₃ ?

You have been prescribed Fultium-D₃ because your levels of vitamin D are insufficient, and your body isn’t absorbing enough calcium to allow your bones to stay strong.

Symptoms for vitamin D deficiency include:

  • Fatigue/tiredness

  • Bone pain 

  • Muscle weakness

  • Muscle pain 

What is Vitamin D?

Vitamin D is an essential nutrient that is created by the skin when exposed to direct sunlight. It is also found in a small number of foods. Your body turns vitamin D into a hormone, which helps it regulate calcium and phosphate uptake. Both these nutrients are needed for the development of strong bones and can’t be absorbed without vitamin D.



Why are your levels of Vitamin D insufficient?

Vitamin D is a hard nutrient to find. In the UK, we are unable to produce enough vitamin D between October and March from direct sunlight. Certain foods contain vitamin D (such as oily fish, liver, egg yolks) although it is difficult to get the recommended amount of vitamin D from food alone.

As the levels of Vitamin D in these foods is low, you'd have to consume large quantities to meet your daily requirements. Because of this the UK government recommend all adults and children consider taking a daily supplement of vitamin D. Below is a table outlining their recommendations:

Daily recommendations

Babies under 1 year of age

8.5-10mcg* (340- 400 IU)

Children from 1-18 years

10mcg daily, particularly during autumn and winter (400 IU)


10mcg daily, particularly during autumn and winter (400 IU)

Pregnant and breastfeeding Women

10mcg daily (400 IU)

*Children who have more than 500ml of infant formula a day do not need any additional vitamin D as formula is already fortified.

Bone disease - A silent condition

There are many consequences of insufficient levels of vitamin D, which can impact all stages of life.  You may have been prescribed vitamin D because you had a small fall that resulted in a fracture to your wrist or hip. This is a sign that your bones have been slowly losing their strength over time and is the first stage of osteoporosis, a serious condition. Diseases resulting from poor bone health are called ‘silent conditions’. This is because they often don’t present with any symptoms

Stay on course

The term ‘silent condition’ doesn’t apply only to the progression of vitamin D deficiency. It also applies to the treatment. You won’t suddenly feel better when taking your Vitamin D treatment. You won’t even be able to tell that it’s working. But it’s important to trust that it is. By increasing your levels of vitamin D, you allow your body to correctly process calcium and phosphate, both of which are easy to obtain through a normal diet. Higher levels of vitamin D will improve the strength of your bones and prevent further bone loss. Because of this, it’s important that you stay on your course of treatment, even though you might not see the effects right away.

Job code: FUL-519  
Date of preparation: June 2019