Natecal Vitamin D3 600mg/400UI - 60 Tablets

Based on 3 reviews
In stock
Olivia Appleton - Medical Content Writer
Olivia Appleton
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist
How we ensure accuracy in our content

What are Natecal D3 600mg/400UI Tablets?

Natecal D3 600mg/400UI Tables are chewable vitamin D3 tablets that are used to provide a source of vitamin D3 and calcium into your diet. They are useful for those who may lack sufficient levels of either or both vitamin D and calcium and may be used to treat and prevent vitamin D and/or calcium deficiencies. The tablets are easy to administer as they are chewable, so are suitable for those who are unable to swallow traditional tablets. Each tablet contains the equivalent of 600mg of calcium and 400IU of vitamin D3, so if you are looking for an easy and convenient way to increase levels of calcium and vitamin D in your diet, speak to a Chemist4U pharmacist, to find out if Natecal D3 tablets will be beneficial for you. 

What is Vitamin D3?

Vitamin D3 is known as the ‘sunshine vitamin’ as it is naturally produced by the skin when it is exposed to sunlight. We can also receive vitamin D3 through some of the food we eat, but we receive the majority of it through sun exposure. It is an incredibly useful vitamin as it transforms into a hormone within the body which circulates in the bloodstream to help absorb calcium and phosphorus which keeps our teeth and bones healthy and strong. Vitamin D3 can also help to strengthen our immune system, which is our body’s defence against infection and illness.

What is Calcium?

Calcium is a mineral that can be found in foods that we eat, such as dairy products and green, leafy vegetables. Our bodies require calcium in order to ensure our heart, muscles and nerves function properly. It also enables our blood to clot when required. If we do not receive enough calcium, it can cause conditions such as osteoporosis to develop, as our bones become weaker.  

How can Natecal D3 be used?

Natecal D3 tablets contain 2 active ingredients:

  • Calcium carbonate

  • Cholecalciferol (vitamin D3)

This product may be used to correct calcium and vitamin D deficiencies in the elderly or those who do not receive enough calcium or vitamin D3 due to dietary requirements or having to spend a lot of time indoors due to illness or mobility issues. It may also be prescribed by a doctor to treat and prevent vitamin D and/or calcium deficiencies. It may also be prescribed in combination with osteoporosis treatments, where calcium and vitamin D levels are too low, or where there may be a risk of them becoming too low. The tablets are chewable, therefore are suitable for those who are unable or prefer not to swallow traditional tablets. 

How to take Natecal Vitamin D3 Tablets?

Always take this product exactly as described by a doctor. Seek advice from your doctor if you are unsure. The usual dose or adults and the elderly is one tablet twice a day, e.g. one tablet in the morning and one tablet in the evening. It is preferable to take this product after meals. The tablets must be either chewed or sucked. Do NOT swallow the tablets whole. 


If you take more Natecal D3 than you should, contact your doctor or go to the nearest A&E department. If you forget to take Natecal D3, take it as soon as possible and then take your next dose at the usual time. HOWEVER, if it is near to the time of your next dose, skip the missed dose and continue as usual. NEVER take 2 doses at the same time. This product is likely to interact with some foods, e.g. those containing oxalic acid (spinach, rhubarb, sorrel, cocoa, tea), phosphate (ham, sausages, cheese spread) or phytic acid (pulses, whole cereals, chocolate). It is recommended that you take Natecal D3, 2 hours before or after meals containing this kind of food. 

When NOT to use this product

Do NOT take this product if you are allergic to any of the ingredients (see ingredients tab for full list) or if you:

  • Have high level of calcium in your blood or urine

  • Are suffering from kidney failure

  • Have kidney stones

  • Have high levels of vitamin D in your blood

Speak to your doctor or a Chemist4U pharmacist BEFORE taking this product if you:

  • Have had kidney stones or other kidney problems

  • Stay in bed for a long period (months) and if you have osteoporosis as you may have high levels of calcium in your blood

  • Are taking any other medicines containing calcium or vitamin D

  • Have sarcoidosis

  • Are pregnant or breast feeding

Can Natecal be taken with other medicines?

Do NOT take this product if you are taking:

  • Any other medicine containing vitamin D

  • Digoxin or other cardiac glycosides

  • Tetracycline and fluoroquinolone antibiotics, it is recommended that you wait at least 3 hours after taking these medicines before taking Natecal D3 chewable tablets

  • Thiazide diuretics

  • You take other drugs used to treat bone disorders such as biphosphonates or sodium fluoride, it is recommended that a period of at least 3 hours has to pass before taking Natecal

  • Phenytoin and barbiturates

  • Rifampicin

  • Orlistat

  • Estramustin

Can this product cause any side effects?

Like all medicines this product can cause side effects, although not everybody will experience them. If you experience any allergic reaction such as swelling of the face, lips or tongue, discontinue use and seek medical advice. Side effects are uncommon with this product, but if you experience side effects it is recommended to seek advice from your GP. See patient information leaflet for full list of side effects. 

Important Information

This product is a medicine; make sure to speak to your doctor or Chemist 4 U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to

If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or our pharmacist before taking this product. If you suffer from any allergies, ask your doctor or our pharmacist if this medicine is right for you.

Store all medicines out of sight and reach of children.

Please read the included leaflet carefully before using this product.

Please contact your GP if appropriate regarding this product.


Helpful Advice on Medication Restrictions & Addiction

For further information on our medication restrictions policy, please click here.

If you are concerned about addiction to 'over the counter' medication, we urge you to visit the below links for professional help and advice:


  • Each tablet contains the active substances: calcium carbonate (1500 mg equivalent to 600 mg calcium) and cholecalciferol (vitamin D3) (400 I.U equivalent to 0.01 mg).  

    The other ingredients are: sorbitol (E 420), maltodextrin, croscarmellose sodium (E 468), aspartame (E 951), saccharin sodium (E 954), lactose monohydrate, aniseed flavour, peppermint flavour, molasses flavour, magnesium stearate, DL-α-tocopherol (E 307), hydrogenated soya bean oil, gelatine, sucrose, maize starch.

Drug Data
Product Type
Product Data
Days Supply
60 Tablets

Can vitamins or supplements help you lose weight?

What are the best vitamin supplements for weight loss?   Trying to lose weight can be much more difficult than it sounds, so we’ll probably all agree that every little helps when it comes to shedding those extra pounds.   As there seem to be vitamin supplements for everything nowadays...

Read More

Can Taking Vitamin Supplements Help with Eczema?

Which vitamin supplements are good for eczema?   When you’re in the middle of a nasty eczema flare-up you’ll try anything to get rid of that itching and soreness — trust me, I’ve been there!   Naturally, this has left people wondering whether their nutrition has an effect on their...

Read More

Are Multivitamins Halal?

How to find halal multivitamins and supplements   Finding halal vitamins and supplements is easier than ever as more and more companies realise that there’s such a high demand for Muslim-friendly products.   However, avoiding haram ingredients can be tricky if you’re not sure what to look for, which is...

Read More

Which Vitamin Supplements Should I Take During My Pregnancy?

The Best Pregnancy and Prenatal Vitamins   Your pregnancy can be one of the most exciting times of your life, but it can also be one of the most worrying.   As a mum-to-be, making sure that your growing baby is getting all the vitamins and nutrients they need is...

Read More

Do Vitamin Supplements Work?

Are vitamin supplements worth it?   Let’s be honest with ourselves — who ever really thinks to themselves “Hm, I wonder if I’ve had enough vitamin E today?” Nobody? Me either.   We know that we’re meant to take in enough vitamins and minerals to keep our body happy and...

Read More

The ultimate guide to vitamin D

We’re all encouraged to get enough vitamin D to stay healthy, either through our diet, by going outside or through supplements. There are many benefits to taking a vitamin D supplement, and it’s essential during autumn and winter when we aren’t getting enough sunlight here in the UK. There’s lots...

Read More

14 signs of vitamin D deficiency

Would you know the signs of vitamin D deficiency?  Whilst the symptoms of low vitamin D levels can vary between individuals, the telltale signs typically include tiredness and fatigue, poor bone health and muscle weakness. Vitamin D deficiency can, however, manifest in many different ways, and it’s typically diagnosed based...

Read More

Ask a Pharmacist

Didn't find the answer you were looking for? Submit a private question to be answered by one of our qualified UK pharmacists.

* Name and email address are only captured so you can be emailed a response when your question is answered by a pharmacist. No personally identifiable information is stored or displayed at any time.

Shipping Times

MethodHandling TimeTransit TimeTimescaleApprox Cost
Standard Shipping (3-5 Working Days)123£2.95

Times are given in working days and are approximate. Costs may change based on order total, day of the week or location within the UK. Ability to hit timescales will depend on whether the products are ordered before a cut off time, as well as additional administration time incurred in reviewing your order.

Please review the estimates at the checkout.

Shipping Costs

Free UK Delivery on all orders over £30* - Delivery within 3-5 working days.

Standard UK Delivery - £2.95* - Delivery within 3-5 working days.

Express UK Delivery - £4.95** - Delivery within 1-2 working days.

Temperature Controlled Delivery - £8.85 - Delivery within 1-3 working days.

Please Note: These prices are shown as a guide only. All delivery times are approximate but have been obtained in good faith.

*Excluding refrigerated products and treatments which are subject to different postage charges.


Discreet Delivery

All our items are sent completely discreet for your peace of mind.

This means the packaging is plain, there is no mention of what product is inside your package and there is no mention of Chemist4U either.

We respect that many of our products are of a sensitive nature - this is why we take every step to keep your purchases private.

Returns Information

Customers can read our full returns policy by clicking here

Natecal Vitamin D3 600mg/400UI - 60 Tablets Reviews

Mrs karen goodwill,
So pleased this isn't citrus flavour
Mrs karen goodwill,
I prefer this product as it's not lemon flavoured. Most of the calcium chew products are & I dislike citrus flavours. Chewable option so I'm not struggling to swallow tablets. Gives me the levels of calcium & vitamin D I need.
Pleasant tasting and easy to take