Vitamin D3 25ug Tablets


Many in stock

Supplement form 25ug Tablets (900 iu) Is a form of Vitamin Ingredients Vitamin D 25ug Bulking Agents (Dicalcium Phosphate, Microcrystalline Cellulose),  Starch,  Sucrose,  Emulsifier (Acacia Gum),  Anti-Caking Agents (Silicon Dioxide, Magnesium Stearate),  Vitamin D3,  Vitamin E (as dl-Alpha Tocopherol),  Tricalcium Phosphate. Dosage Take one tablet daily with food Cautions If...
Add to wishlist

Supplement form

25ug Tablets (900 iu)

Is a form of



  • Vitamin D 25ug
  • Bulking Agents (Dicalcium Phosphate, Microcrystalline Cellulose), 
  • Starch, 
  • Sucrose, 
  • Emulsifier (Acacia Gum), 
  • Anti-Caking Agents (Silicon Dioxide, Magnesium Stearate), 
  • Vitamin D3, 
  • Vitamin E (as dl-Alpha Tocopherol), 
  • Tricalcium Phosphate.


Take one tablet daily with food


If you are pregnant or lactating, taking medication or under medical supervision, please consult your GP or medical professional before taking supplements. Do not exceed recommended dose. Food supplements should not be used as a substitute for a varied diet. Store is a cool dry place. Keep out of reach of children NOT intended for use by persons under the age of 18

Alternative Names

The alternative name for Vitamin D is Cholecalciferol.  It is also known as 1, 25-dihydroxycholecalciferol. 

What is Vitamin D3?

Vitamin D3 is considered as being a type of pro-hormone, categorized as a fat soluble steroid. These vitamins play a crucial role in the body’s ability to absorb and metabolize when using in conjunction with calcium, phosphorus, and certain other minerals. Sunlight is the main natural source of vitamin D3 for the human body. The skin supports vitamin D3 synthesis as a result of UV light response and 7-dehydrocholesterol interaction. As a result, those that are out in the sun for long periods of time typically have sufficient vitamin D3 levels. Sunlight remains as the main source of natural vitamin D3 and is the main source for synthesis of vitamin D3 through the skin as well.

Typically, a human will need to get at least 15 minutes under sunlight on a bi-weekly basis in order to get a sufficient amount of vitamin D3. Putting your entire upper front, back, and your legs under the sun will be sufficient, but the more sunlight absorption, the more vitamin D3 is supplied. However, the excess of vitamin D3 is not absorbed by the body, but rather it ends up being degraded.

How does it work?

The production of vitamin D3 on the skin’s surface occurs as a result of the cholesterol derivative inside of your skin interacting with direct sunlight, but it does not absorb into your bloodstream. It ends up taking a certain amount of time for it to be absorbed from the skin’s surface and to enter the bloodstream. The amount of time that this will take will vary, but typically within two days the process will be done.

Used To Treat

Vitamin D3 applications are vast. For certain medical complications, it may be suggested for medicinal purposes. Vitamin D3 is well-recognized for it’s’ strength and its’ ability to fight off and prevent various medical disease within the human body. All cells within the human body include receptors that are interactive with vitamin D3, from cells in the skeletal structure to the nervous system. Some of the regular applications for vitamin D3 are:

  • Prevention from weakening of the immune system and bones
  • Prevention from multiple sclerosis, schizophrenia, and type 1 diabetes
  • Decreasing the pace that cancer cells spread
  • Reduction of bodily pain and aches

Key benefits

Vitamin D3 is a natural component in seafood and eggs. It is also artificially added into many dairy products. However, even though it is found in these foods, it is still most commonly supplied through natural sunlight. Since all parts of the human body can benefit from this vitamin, there are many different benefits that exist. Some of these include, but are not limited to, the following:

  • A huge benefit of vitamin D3 comes in its’ ability to assist the intestines with absorption of phosphorus, calcium, and other nutrients. The end result of this will be maintenance of bone and immune system strength.
  • Vitamin D helps to prevent both rickets and osteomalacia. Rickets occur in children that have a vitamin D deficiency; the deformation occurs to the skeletal structure. Osteomalacia occurs within the muscular system and causes weakening of the bones, which results in them becoming brittle. This is one of the more common types of medical diseases that may form in adults as a result of a prolonged vitamin D deficiency.
  • Vitamin D3 is the primary calcium source for the human body and helps to prevent the body from developing any forms of arthritis or osteoporosis.
  • It helps maintain ideal blood pressure levels, lowers feelings of tension, stress, anxiety, and helps to relieve both bodily pains and aches through decreasing occurrences of muscle spasms and reducing instances of respiratory infections. Vitamin D3 is also known for its’ beneficial contributions to cells for the purpose of assisting with the secretion of insulin, getting rid of depression, and bettering the health of skin by making it softer, smoother, and stronger. Vitamin D3 is also used to create blood vessel lining, which provides protection and increases cardiovascular health and strength.
  • Vitamin D3 also serves as a medicinal treatment method for various medical diseases, such as preeclampsia, by strengthening the kidney and its functions. Further, it works to protect the body from cancer development as it decreases the speed in which the cancerous cells replicate. Vitamin D3 can also help regulate insulin production levels and decreases the parathyroid numbers. It also helps to protect the body from osteomalacia through strengthening the musculoskeletal system. It helps protect the human body from hypophosphatemia through healthy phosphate level maintenance. It also works to protect the human body from hypocalcaemia through preventing calcium deposits. Lastly, it helps with fighting off renal osteodystrophy through the process of regulating calcium levels, which also contributes to protecting the body from fibromyalgia.

Goes well with

Vitamin D3 is often combined with,

  • Vitamin K
  • Calcium 

How to take/dosage

Anywhere between 1,000 and 2,000 IU of vitamin D3 is considered to be a recommended dose in supplement form. This is a sufficient supply of vitamin D3 for anywhere from 50% to 95% of the world. This is considered to be the lowest dosage amounts that can be effective.

An increase in dosage is usually due to a higher bodyweight. Typically, you will be looking at a dosage of between 20 and 80 IU per kilogram of weight. If there is significant sun exposure, targeting around 20 to 40 IU per kilogram should be sufficient. However, in cases where the sun is not out as much, doses in the 60 to 80 IU per kilogram range may be necessary.

Vitamin D3 is considered to be the ideal source of vitamin D because of the fact that the human body uses it the most efficiently of all types of D vitamins. It is also a great vitamin source, considering that its’ intake can be reached through a healthy diet and a bit of time out in the sun. 

Possible side effects

While vitamin D3 has many great benefits, there are still some potential side effects that may occur when taking vitamin D3, just like you would expect with any other type of medication or supplement. Some examples of side effects that may occur when using vitamin D3 supplements include the following:

  • Dry or metallic-tasting mouth
  • Frequent urination
  • Bone pain
  • Decrease in muscle strength
  • Lumbar pain
  • Decrease in height
  • Stunted growth for children
  • Unusual heart rate and pace
  • Nausea
  • Drowsiness
  • General weakness
  • Constipation
  • Decrease in appetite and/or weight
  • Frequent thirst
  • Behavioral changes

In the rare case where any allergic reaction occurs to vitamin D3, emergency medical assistance should be sought. Side effects such as the following serve as indicators of an allergic reaction:

  • Having difficulty breathing
  • Experiencing swelling of the throat, tongue, lips, or face
  • Developing hives (itchy, swollen rash) throughout the body; most likely to occur on the arms, face, and torso. 


  • Aluminum interacts with VITAMIN D
  • Digoxin (Lanoxin) interacts with VITAMIN D
  • Calcipotriene (Dovonex) interacts with VITAMIN D
  • Digoxin (Lanoxin) interacts with VITAMIN D
  • Diltiazem (Cardizem, Dilacor, Tiazac) interacts with VITAMIN D
  • Verapamil (Calan, Covera, Isoptin, Verelan) interacts with VITAMIN D
  • Water pills (Thiazide diuretics) interacts with VITAMIN D

Safety concerns

It is best to speak with your general practitioner or pharmacist before you begin using any form of vitamin D supplement. There is a wide range of inactive ingredients that are found in vitamin D3 supplements, which could lead to allergic reactions and other health issues.

Additional care and attention should be applied when using vitamin D supplementation while pregnant. At this time, it is especially important to restrict yourself to the recommended dosage amount. Any modification to the amount that is taken in a single dose should first be run by your general practitioner. Speak with him or her to learn about all the different benefits and risks of supplementing with vitamin D3 while pregnant.

Vitamin D3 supplements are known to reach the baby while breastfeeding, which means that you should discuss using this type of supplement with your general practitioner before using if you are nursing in case this is a cause for concern.

Things to note

  • Vitamin D3 is often seen as non-stimulatory medication.
  • With meal, Vitamin D3 has enhanced absorption 

Scientific support and reference citations


Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Customer Reviews

Based on 1 review Write a review

Recently Viewed Products