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Vitamins and Supplements

Fultium D3

Fultium D3 is a vitamin D supplement that contains the ingredient colecalciferol. It’s prescribed to prevent or treat vitamin D deficiency, and can also be given alongside other medications to treat osteoporosis.

Vitamin D is naturally produced by the skin after exposure to sunlight, but living in the UK could mean that you don’t get enough sunlight to produce a sufficient amount of vitamin D for your body. We need the vitamin to absorb calcium and to strengthen bones, so supplements such as Fultium D3 could be essential to your overall health.

You should always check with your GP before starting a new medication that it’s appropriate for you. You may have high levels of vitamin D already, in which case, Fultium D3 could cause more harm than good. However, if you suspect that you may need to take supplements to boost your vitamin D intake, make an appointment with your doctor to see if this medication is right for you.

Last PIL Review Date: 24/01/2020

See Fultium D3 800 IU Patient Information Leaflet

This medicine is not available to request via our online service. If you are still having trouble with your symptoms please visit the NHS website for services in your area.


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Dr. Diana Gall GMC No. 7685129

Dr Diana Gall graduated from medical school in 2005 and has since undertaken further intensive training in many different areas of medicine. Dr Diana has reached consultant level and has practiced medicine all over Europe.

Shamir Patel GPHC No. 2049338

Shamir is a well-respected pharmacist with extensive experience running online pharmacies in the UK.

What is Fultium D3?

Fuultium D3 is a supplement containing the active ingredient, colecalciferol, which is equivalent to vitamin D.

The supplement is prescribed to treat and prevent vitamin D deficiency, and may also be given alongside other medication for the treatment of osteoporosis.

Why do we need vitamin D?

Vitamin D is needed for the body to absorb calcium in the gut, and it also helps to strengthen bones (hence why it’s often given alongside other drugs to strengthen the bones in the case of osteoporosis).

The government recommends that all adults should consume 10 micrograms of vitamin D per day, but often, the lifestyle of many people in the UK means that the average daily consumption of vitamin D falls below this target.

Vitamin D is a naturally occurring chemical, found in some foods, and also produced by the skin after exposure to sunlight. However, in the UK, the sun often isn’t strong enough to provide a sufficient amount of Vitamin D.

Can I take Fultium D3?

As vitamin D is a naturally occurring chemical that our bodies produce, most people are perfectly safe to take Fultium D3 unless they have allergies or severe problems. Examples where a patient must consult their own doctor before taking Fultium D3 include those who:

  • Are allergic to Fultium D3 or any of its ingredients
  • Have high levels of vitamin D in the blood
  • Have high levels of calcium in the blood or urine
  • Have kidney stones or serious kidney problems
  • Have kidney damage/disease
  • Are being treated for heart disease
  • Have sarcoidosis
  • Are already taking vitamin D supplements of calcium supplements.

If any of the above apply to you, you should check with your GP or pharmacist before taking fultium D3 or any other vitamin D supplements. There are also some medications that might interact with Fultium D3, including:

  • Some heart medicines (cardiac glycosides)
  • Some epilepsy medicines (phenytoin)
  • Barbituates
  • Glucocorticoids
  • Laxatives
  • Colestyramine
  • Acintomycin
  • Imidazolee antifungal treatments

If you take any of the above medicines, Fultium D3 might not be the best medicine for you, and you should speak to your doctor to discuss alternative treatment options.

Always disclose your other medications to your doctor or pharmacist before taking Fultium D3. This includes any medicines that haven’t been prescribed, or that have been bought over the counter such as multivitamins and natural supplements.

If you don’t have any of the conditions mentioned here, or aren’t taking any of the medications that have a possible interaction, you can assume that it’s safe for you to take Fultium D3 to prevent or treat vitamin D deficiency.

What are the side effects of Fultium D3?

Despite being a naturally occurring substance, Fultium D3 can still cause some side effects. However, these are often a cause of taking too much of the supplement when it isn’t appropriate. Side effects might include:

  • Having too much calcium in the blood. Symptoms of which include nausea, vomiting, loss of appetite, constipation, stomach ache, extreme thirst, muscle weakness, drowsiness and confusion
  • Having too much calcium in the urine
  • Skin rash
  • Itching
  • Hives

The last three side effects may indicate an allergic reaction. If any of these happen, stop taking the supplements and inform your doctor as soon as you can.

Any side effects should be reported back to your GP, as well as logging them on the MHRA yellow card app where you can search for a medicine and record any side effects you experience after taking it.

Can I take Fultim D3 if I’m pregnant?

Some pregnant women do need to increase their vitamin D consumption, but your own GP will advise you on this. Some sources say that Fultium D3 is safe to use during pregnancy whilst others say it should be discussed with your own doctor. To err on the side of caution, we’re going to advise you to speak to your own GP regarding the consumption of Fultium D3 during pregnancy.

Can I drive while taking Fultium D3?

Fultium D3 shouldn’t cause drowsiness if the right amount is being taken. However, if you experience any of the symptoms listed in the side effects that could indicate having too much calcium in the blood, it’s a good idea to avoid driving until the issue is resolved. Otherwise, if you feel fine and aren’t drowsy, dizzy or confused, you can drive as you normally would.

How do you take Fultum D3?

The dosage you’re prescribed will depend on the severity of your vitamin D deficiency, but no matter how much you’re given, the tablets should be swallowed whole with a glass of water.

Fultium is usually taken once a day, but your doctor will adjust your dose if they think you need more of the supplement.

What’s the difference between Fultium D3 and other Vitamin D supplements?

Vitamin D supplements are readily available from many health shops across the country, and they’re a fairly popular buy. However, Fultium D3 is a much higher strength than anything that you could obtain from the high street. Fultium D3 is a prescription-only medication and is intended for people with diagnosed vitamin D deficiency. Whilst taking the high street supplements is relatively safe, they might not be providing your body with enough vitamin D.

How can I increase my Vitamin D intake naturally?

In the UK, this can be quite difficult, but spending more time outdoors can certainly help to increase the vitamin D in your body. It can also be found in some foods such as oily fish.

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The following delivery methods are currently available within the UK: All orders are sent in discreet, plain packaging.

UK Standard Delivery, £1.99

Order before 12pm to have your order delivered using Royal Mail Tracked 48 Service

standard UK delivery within 3-5 working days

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UK Express Delivery, £2.99

Order before 12pm to have your order delivered using the Express delivery service* (deliveries are made Monday - Saturday)

If you order after 12pm, your order will be dispatched the next working day and will be with you within 48 hours once dispatched. This excludes weekends and bank holidays

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Royal Mail Special Delivery Next Day Anytime, £4.99 (This service includes Saturday)

Order before 12pm to have your order delivered using Royal Mail Special Delivery Service, which includes Saturday deliveries.

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Royal Mail Special Delivery Next Day Before 1pm, £7.99 (This service includes Saturday)

Order before 12pm to have your order delivered before 1pm next day using Royal Mail Special Delivery service, this also includes Saturday deliveries.

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Royal Mail Special Delivery Next Day Before 9am, £14.99 (This service includes Saturday)

Order before 12pm to have your order delivered before 9am next day using Royal Mail Special Delivery service, this also includes Saturday deliveries.

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DPD Next Day Delivery, £4.99 (Monday - Friday only. This service does not include Saturday)

Orders signed by the doctor before 12 noon the day before will be delivered the following working day

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

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DPD Next Day Delivery, by 12 Noon, £9.99 (Monday - Friday only. This service does not include Saturday)

Orders signed by the doctor before 12 noon the day before will be delivered by 12 noon the following working day

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

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DPD Next Day Delivery, by 10:30am, £14.99  (Monday - Friday only. This service does not include Saturday)

Orders signed by the doctor before 12 noon the day before will be delivered by 10:30am the following working day

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

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DPD Saturday Delivery, £14.99

Orders signed by the doctor before 12 noon the day before will be delivered the following Saturday

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

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DPD Saturday Delivery, by 12:00am, £21.99

Orders signed by the doctor before 12 noon the day before will be delivered by 12:00am Saturday

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

Additional terms and conditions apply.

DPD Saturday Delivery, by 10:30am, £29.99

Orders signed by the doctor before 12 noon the day before will be delivered by 10:30am Saturday

If your order is signed by the doctor after 12 noon, your order will be delivered within 2 working days

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