Fultium D3

Fultium D3 capsules contain the active ingredient colecalciferol to prevent and treat vitamin D deficiency. This supplement helps to increase the amount of vitamin D in the body which is used by the gut to process calcium and phosphorus.


Buying your vitamin D supplement online is simple with our secure service. All orders are checked by our registered prescribers before being dispensed by our UK pharmacy and shipped by tracked courier.

Trustpilot rating 9.4 out of 10
Order now, and get it by Tuesday 24th October

One capsule contains 800 IU of the active ingredient colecalciferol. Take according to your prescriber's instructions.

£ 29
Order now, and get it by Tuesday 24th October

Fultium D3 capsules contain the active ingredient colecalciferol to prevent and treat vitamin D deficiency. This supplement helps to increase the amount of vitamin D in the body which is used by the gut to process calcium and phosphorus.


Buying your vitamin D supplement online is simple with our secure service. All orders are checked by our registered prescribers before being dispensed by our UK pharmacy and shipped by tracked courier.

Order now - our doctors are standing by
  • Secure doctor consultation Your case is confidentially reviewed by a qualified practitioner
  • Dispensed by a UK pharmacy Our regulated pharmacy works to the highest possible standards
  • Next-day shipping All of our orders are delivered by 24-hour tracked courier

Fultium D3 is a supplement used in the prevention of vitamin D deficiency. It is a capsule containing the active ingredient colecalciferol.

In the UK, the RNI (reference nutrient intake) of vitamin D for adults is 10mcg per day, which is equivalent to 400IU. To prevent deficiency, people in the UK over the age of four are advised to consider taking a 10mcg supplement each day (particularly during darker months over the autumn and winter).

Vitamin D is required by the body in order for it to efficiently process and regulate the levels of calcium and phosphate in the system. It helps to maintain healthy muscles and strong bones. Vitamin D deficiency can lead to osteoporosis, and other health issues. 

Vitamin D deficiency is quite a common condition in the UK. When our skin is exposed to ultraviolet B (UVB) rays found in sunlight it produces vitamin D. The vitamin is important as it aids our gut with the absorption of calcium and phosphorous from food, both of which are required to maintain healthy teeth, muscles and bones. Most of our intake of this particular vitamin is from sunlight, as not many food sources naturally contain it. It can be found in some oily fish such as sardines, mackerel and salmon but the amount is quite small.

Vitamin D deficiency can develop at any age, but there are certain groups who are more likely to be affected. Some groups are higher risk because they have an increased need for vitamin D. This includes pregnant women, women who breastfeed, and young children. Sometimes in these groups, the body’s natural stores of vitamin D are either depleted or have not been sufficiently built up, so deficiency may be more likely.

Other groups may be more at risk because their body is not able to produce sufficient vitamin D levels. This can affect a number of people including those who: are in hospital for a significant amount of time; are unable to leave the house; wear clothing that covers most of their body when outdoors, due to cultural or religious beliefs; are elderly; have a darker skin colour; or who have already been diagnosed with certain medical conditions, such as Crohn’s and coeliac disease.

The majority of people living with vitamin D deficiency may not be aware that they have it. This is because it does not present any obvious symptoms. Adults with a low amount of vitamin D in their system might feel tired, achy or generally unwell. Vitamin D deficiency can eventually lead to skeletal issues such as osteoporosis or osteomalacia.

It can be difficult for UK residents to receive sufficient vitamin D from sunlight and diet alone, especially during the winter months. However, the body creates stores of the vitamin during the sunnier summer months.

To help prevent vitamin D deficiency, a person may be prescribed a course of treatment such as Fultium D3. A doctor will typically decide on the strength and dosage required depending on the vitamin D levels present. 

To order or renew your prescription for Fultium D3 with Treated.com, take our secure online consultation. Your case will be reviewed by a doctor, and shipped from our UK pharmacy once approved. Medications are shipped by next-day delivery.

Buy now
Page last reviewed:  Thursday, Sep 14 2017

Always follow the instructions provided by your doctor or pharmacist.

  1. Take as directed.
  2. Swallow the capsule(s) whole with water. Do not chew.
  3. The capsules can be taken with or without food.
  4. If you forget to take your capsule, do not double-up on your next dose. Take the normal amount.

The directions detailed here serve only as a brief guide. Please refer to the patient information leaflet for further details.

Download Fultium D3 patient information leaflet

Page last reviewed:  Thursday, Sep 14 2017
Side effects & Warnings

Not everyone who uses this medication will experience side effects. However, if you experience any side effects which become serious, or think you may be having an allergic reaction, seek medical attention right away.

Uncommon (1 in 100 people or less):

Excess calcium in your blood (hypercalcaemia) which can make you feel nauseous or be sick; constipation, stomach ache or muscle weakness; feeling thirsty, drowsy or confused; hypercalciuria.

Rare (1 in 1000 people or less):

Hives, skin rash, itching.

This list of side effects is not comprehensive. Consult the patient information guide that comes with the medication for more.

Taking it with other medications

During your consultation make sure you inform your doctor of any other medications you are currently taking or have recently taken. This should include any prescription items as well as those obtained over-the-counter.

It is very important to tell your doctor if you are taking: heart drugs such as digoxin; epilepsy medicines such as phenytoin; sleep treatments known as barbiturates; glucocorticoids; laxatives; weight loss drugs such as orlistat; drugs to lower your cholesterol including colestyramine; imidazole antifungals; a cancer drug called actinomycin; or any additional vitamin D or calcium treatments.

Conditions to look out for

Your doctor needs to know if you have or have ever had: high levels of vitamin D in your blood, high levels of calcium in your blood or urine, any type of bowel disorder such as inflammatory bowel disease, kidney stones, kidney disease, heart disease and sarcoidosis.

Pregnancy and breastfeeding

Check with your doctor before using this product if you are pregnant, breastfeeding or trying to conceive. Higher doses in particular may not be suitable for use.

Driving and using machinery

Fultium is not likely to interfere with your capacity to drive or use machines.

Page last reviewed:  Thursday, Sep 14 2017
Please read the patient information leaflet for this medicine fully before use:

Fultium D3 800iu


Can I still drink alcohol?

You should check with your doctor before drinking alcohol and taking this product.

Will I still be able to drive?

This medication should not have an adverse effect on your ability to drive or operate machinery. However, if you feel unwell, drowsy or dizzy refrain from driving and consult your doctor.

Can I take this medicine while pregnant?

Those who are pregnant, think they might be pregnant or are breastfeeding should speak to their doctor prior to taking Fultium D3.

How should I store it?

Keep away from children. Store in the original packaging to minimise light exposure. Never exceed the expiry date supplied with your medication.

Am I allergic to anything in the medicine?

Do not take this product if you are allergic to any of its ingredients. They include colecalciferol, maize oil, butylated hydroxytoluene, gelatin, glycerol, brilliant blue ws and purified water.

Is it available over-the-counter?

Vitamin D supplements are available over the counter in certain strengths. When you order Fultium D3 from us, however, you will still need to take our online consultation, so that our doctor can ensure it is suitable for you.

Is it right for me?

Talk to your doctor if you are not sure. They will be able to assess whether you need to supplement your vitamin D levels by taking this product.

If you are already taking Fultium D3, renewing your prescription is simple with our secure consultation facility. Take our questionnaire, and a doctor will review your responses. Once approved, a prescription will be drawn up and dispensed by our UK pharmacy. Orders are shipped using tracked next-day delivery.

Page last reviewed:  Thursday, Sep 14 2017
Our service

Consultation. Prescription. Delivery. Satisfaction.

  • GMC Doctors
  • Genuine Medication
  • 24hr Delivery
  • Secure Payment & Data
  • Registered Pharmacy
  • Easy Repeat Orders

We promise to keep your details secure and private. We will never sell your information or share it with third parties. Whatever treatment you buy online from us, we will send in plain, unmarked packaging via our secure courier service.

Delivery on all items is included in the price. After your order has been dispatched, you’ll be supplied with a tracking number, allowing you to follow the progress of your items every step of the way. We deliver to anywhere in the UK, so whether you’re in London, Birmingham, Manchester, Glasgow or Cardiff, your order will be at your door within just 24 hours of approval from our doctor.

Product review

Recent Fultium D3 Reviews

No Reviews
A simple process
Getting the treatment you need has never been easier with our speedy and simple online service.
  • Search for your medicine

    Find the treatment you need.
  • Fill in a simple questionnaire

    A GMC-registered doctor will review your answers.
  • 24h delivery to your door

    Next-day delivery. Every order is sent by tracked courier.
  • Repeat ordering is easy

    We keep your details secure so you can reorder with ease.

No matches found. You can find all our treatments here