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Vitamin D3 in Olive Oil


NW10010-BottleFront.jpgWhat is vitamin D?

Vitamin D can be found in cells throughout the entire body. It is necessary for calcium and phosphorus absorption to build and maintain strong bones and teeth, provide immune system support, and for healthy muscle function.* Often referred to as the “sunshine vitamin,” vitamin D3 is synthesized when bare skin is exposed to ultraviolet B (UVB) light.

NatureWise Vitamin D3 in certified organic olive oil delivers the same biologically active form of vitamin D produced by the body as a result of sun exposure. Naturewise Vitamin D3 in softgel form provides all the benefits of vitamin D without the risk of unprotected exposure to UVB rays.

FDA Disclaimer About Health Claims


Please note that the following statement is required to accompany a health claim, such “provides immune system support.” It appears on all NatureWise labels and sales copy.

*These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

 What is vitamin D/vitamin D3 used for?

Vitamin D has been used for the prevention and management of many conditions such as osteoporosis, muscle weakness, and immune deficiency. NatureWise Vitamin D3 in Olive Oil is formulated tohelp maintain healthy bones and teeth, provide immune support, and support muscle function.*

Why supplement with vitamin D?

Despite the suggested benefits of vitamin D, studies show that most people do not get the recommended amount from sunlight alone. Factors that can inhibit vitamin D3 production include the time of day sun exposure occurs, season, latitude, skin color, age, clothing, and sunscreen use. In fact, according to the Mayo Clinic, 25% to 50% or more of the general population may be vitamin D deficient. Symptoms suggesting deficiency include bone pain and brittleness, muscle weakness, and fatigue. People who may be at higher risk for deficiency include those who spend a lot of time indoors, have darker skin pigmentation, are elderly, or overweight.

What is the suggested use? 

The suggested use for NatureWise Vitamin D3 (5,000 IU) is as follows:

  • Adults take 1 softgel once daily.

Is vitamin​ D3 safe?  

The information from studies done to date suggest that Vitamin D is safe when taken as directed.


The NatureWise Vitamin D3 label carries the following discretionary statement:  

Vitamin D toxicity can result from regular excess intake. Do not exceed the recommended serving. As with any dietary supplement, you should consult your healthcare provider before use, especially if pregnant, nursing, have a medical condition, taking medications, or have known adverse reactions or allergies.

Pregnancy and breast-feeding 

Vitamin D is considered safe for women who are pregnant or breast-feeding when used in doses below the tolerable upper intake level (UL) of 4000 IU per day.

What adverse reactions or side effects are reported with vitamin D3?

Although rare, vitamin D intoxication can occur when vitamin D supplements are taken in excessive amounts (considered by the Mayo Clinic to be >50,000 IU per day, over a period of several months). Symptoms of vitamin D toxicity include hypercalcemia, excessive levels of calcium in your blood, which is marked by poor appetite, nausea and vomiting. Fatigue, appetite loss, muscle pain, weakness and kidney problems also may occur.

Vitamin D intoxication is more common in people with existing health problems such as kidney or liver conditions, and in those taking thiazide-type diuretics. 

Are there any drug or herb interactions reported with vitamin D3?

Most herbs and supplements have not been thoroughly tested for interactions with other herbs, supplements, drugs, or foods. Although by no means an exhaustive list, the interactions listed below are based on reports in scientific publications, laboratory experiments, or traditional use. If you have a medical condition, or are taking other drugs, herbs, or supplements, you should speak with a qualified healthcare provider before starting a new medication or supplement.



  • Aluminum

  • Atorvastatin

  • Calcipotriene (Dovonex

  • Cimetidine (Tagamet)

  • CYP450 3A4 (CYP3A4) substrates

  • Digoxin (Lanoxin)

  • Diltiazem (Cardizem, Dilacor, Tiazac)

  • Heparin

  • Thiazide diuretics

  • Verapamil (Calan, Covera, Isoptin, Verelan)

  • Stimulants

  • Terbinafine (Lamisil)

  • Theophylline

  • Verapamil

Herbs/Dietary Supplements 

None reported.

If a drug is not on the list, does this mean there are no interactions?  

The drug you inquired about is not listed on our current list of known drug interactions. We strongly recommend that you consult your physician regarding your personal healthcare needs.

Are there any food interactions reported with NatureWise Vitamin D3? 

There are none reported.

What else do I need to know about NatureWise Vitamin D3? 

NatureWise Vitamin D3 is manufactured in the USA, using non-GMO and gluten-free ingredients. Lanolin is used as the source for vitamin D3 (cholecalciferol), as it is well absorbed by the body.​


Each softgel has 5,000 IU of vitamin D3 in certified organic extra virgin olive oil. The bovine derived softgel capsule is made of gelatin, glycerin, and water.

NatureWise Vitamin D3 does not have yeast, wheat, gluten, dairy, corn, soy, eggs, sugar, tree nuts, peanuts, fish, shellfish, or hydrogenated oils.

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