Colekal D3®

Colekal D3

Treatments from only£8.33 per month

  • Free next-day delivery
  • UK-licensed clinicians


Colekal D3 ®

The sun provides the majority of our vitamin D, but what happens when the sun doesn’t shine? This is where Colekal D3 comes in, preventing levels from dropping during the darkest of winter days.

Get Colekal D3 delivered to your door with an EveAdam subscription.

Treatments from only £8.33 per month

Buy Colekal online for monthly deliveries of the sunshine vitamin

All vitamins are important to our health and vitamin D is no different, but with an estimated 1 billion people in the world suffering from low levels, supplements are a must for many of us.

What’s more, the darker your skin pigmentation, the more likely you’ll suffer from low vitamin D in climates like the U.K. and even the lightest skin struggles to get enough of the sunshine vitamin in winter.

Subscribe to get your vitamin D online from EveAdam and we can help you avoid low vitamin D levels with monthly deliveries, the first arriving the next working day after you’ve ordered. You can also get Colekal D3 sent to you every three months, if you find that more convenient.

Supplement or treatment? What exactly is Colekal D3?

Both, but you’re probably here for the details right?

Colekal D3 is available in different dosages, the smallest of which are used to prevent levels of vitamin D dropping to a degree that might impact your health.

But Colekal isn’t just for prevention. It can also help to treat severe deficiencies that can lead to serious bone conditions. In these cases you’ll likely need a prescription for the higher doses of Colekal, which are taken over a number of weeks.

Do I need to get a prescription for a vitamin?

Again, this will depend on the strength of the treatment. Typically, vitamin supplements do not need a prescription and can be bought from your local pharmacy or even supermarket, and Colekal is no different. For significant vitamin D deficiency, a higher dose is required which often requires a prescription.

Are these stronger doses safe to use?

As long as you follow your prescribing clinician’s instructions you’re very unlikely to have any issues taking Colekal D3 at any dosage. The main risks for taking high levels of vitamin D happen when levels get too high, which is why their use needs to be monitored and treatments last a specific number of weeks.

For the smaller supplement doses, Colekal is like any other vitamin, only with the fantastic nickname of the sunshine vitamin.

Page reviewed by:
Mr Craig Marsh
Mr Craig Marsh
Pharmacist Prescriber
Visit author profile
Last updated 02/07/2021

What you need to know about Colekal D3

What is Colekal D3

Colekal D3 is a form of vitamin D, but to understand its importance, we need to know what vitamin D is.

Vitamin D is an essential vitamin, one that we cannot live without. It plays a major role in keeping our muscles, bones and teeth healthy and low levels of it are linked to everything from depression to cancer.[1]

Having low levels of vitamin D has also been linked to worse outcomes relating to Covid 19 infections.[2] Trials are currently taking place to establish the outcome and impact of vitamin D levels for Covid 19.

Vitamin D can be acquired from exposing the skin to sunlight (in fact we get the majority of our vitamin D from the sun). In dark winter months this can become much harder, which is where Colekal D3 comes in.

What does Colekal treat?

What does Colekal prevent?

What are the differences in dosages for Colekal D3?

What does ‘IU’ mean?

Where can I buy Colekal D3 online?

How do I take Colekal D3?

You should always take Colekal D3 as instructed by your prescribing clinician, and as detailed on the label. If you’re unsure, discuss it with your clinician.

Take Colekal with a large meal to get the most out of the treatments. Tablets and capsules are swallowed with water, while effervescent tablets are dissolved in a glass of water and drunk.

Should I use Colekal tablets, capsules or an effervescent?

Instructions for the different dosages of Colekal D3

What are the most common Colekal D3 side effects?

All treatments and supplements come with the risk of side effects, but for vitamin D, as long as the instructions have been properly followed, these are usually rare and mild in nature. The most common side effects occur in under one in 100 patients, which is referred to medically as uncommon. These include: hypercalcaemia (too much calcium in the blood) and hypercalciuria (too much calcium in the urine).

What to look out for in allergic reactions

What to look out for in allergic reactions

Dietary restrictions for Colekal D3

Capsules, tablets and effervescents are not always suitable for everyone with dietary restrictions, with animal derived gelatine being one of the most common ingredients in these products. It’s therefore important that you ask your prescribing clinician about the ingredients in Colekal if this is relevant to you.

Colekal D3 tablets, capsules and effervescents are all vegetarian and gluten free, but are not halal, kosher or vegan. So if you follow a particular diet, alternative vitamin D products may be more suitable.

Sunlight - the best source of vitamin D

The differences between vitamin D2 and vitamin D3

Vitamin D food sources


Before taking Colekal D3, you should always read the product packaging.

When to avoid taking Colekal D3

Vitamins are among the safest treatments available, as long as you follow the instructions of your prescribing clinician fully. Most people have few problems tolerating vitamin D, with less than one in 100 patients reporting any issues at all. It’s important that you know what the risks are, even if these are highly unlikely to occur.

There are some conditions that’ll make Colekal D3 unsuitable for you to use if you have them or are prone to them. You should therefore make sure that your clinician or pharmacist knows what these are before taking it.

These include: allergies to any of its ingredients, high levels of calcium in the blood or urine, high levels of vitamin D in the blood, kidney stones and kidney failure.

Mixing Colekal D3 with other medications


[1] Penckofer, S, Et al. 2010. Vitamin D and Depression: Where is all the Sunshine? HHS Public Access. USA. PMC.

[2] Rastogi, A, Et al. 2020. Short term, high-dose vitamin D supplementation for COVID-19 disease: a randomised, placebo-controlled, study (SHADE study). Post Graduate Journals. India. BMJ Journals.