Vitamin D3 | 4000 IU | 400 Tablets | EVO Nutrition

Vitamin D3 4000 IU by EVO Nutrition is a large 400-tablet supplement delivering vitamin D3 (cholecalciferol) in one daily dose to support the immune system, calcium absorption and the health of bones, muscles and teeth. The 4000 IU dose sits above foundational daily amounts and below concentrated weekly doses, which makes it a choice for extended everyday use. At 400 tablets, the bottle covers more than a full year at one tablet per day, exactly what people want for uninterrupted continuity through low-sun months.

What is vitamin D3?

Vitamin D3 is the animal form of vitamin D, known chemically as cholecalciferol, and is the same form human skin produces on exposure to UVB radiation. Vitamin D3 is classed among the fat-soluble vitamins and converts inside the body into an active steroid hormone rather than acting as an ordinary vitamin. Vitamin D3 differs from plant-derived vitamin D2 (ergocalciferol) in how steadily it maintains blood levels.

Benefits of vitamin D3

• Immune support: vitamin D3 takes part in the function of immune cells that carry its own receptors.
• Calcium absorption: vitamin D3 contributes to raising calcium and phosphorus absorption from the intestine.
• Bone health: vitamin D3 is linked to maintaining bone density and normal mineralization.
• Muscle function: vitamin D3 contributes to supporting normal muscle strength and performance.
• Dental health: vitamin D3 is linked to maintaining teeth through its role in calcium metabolism.
• Low-sun season support: dietary vitamin D3 offsets limited skin synthesis during seasons with little sun exposure.

How vitamin D3 works in the body

Vitamin D3 does not act in the form taken; it passes through two activation steps. The first occurs in the liver, where 25-hydroxylase converts it into calcidiol, the stored form measured in blood tests. The second occurs in the kidney, where 1-alpha-hydroxylase converts it into calcitriol, the active form that binds the vitamin D receptor inside the cell nucleus and alters the expression of hundreds of genes, among them the genes handling calcium transport across the intestinal wall.

What sets this formula apart

EVO Nutrition uses a tablet rather than a softgel, and a tablet is a stable dosage form that does not soften with heat the way gel shells can, a practical consideration in hot climates. At 4000 IU per tablet the daily dose needs no splitting, and the 400-tablet count makes this one of the largest daily vitamin D3 packs available, covering a long uninterrupted cycle. The tablet is small and easy to swallow compared with high-load mineral tablets.

Who is this product for?

• People who spend most of the day indoors or in offices.
• People living at latitudes with long winters or little sun.
• People fully covered outdoors, which limits skin synthesis of vitamin D3.
• People focused on long-term bone and muscle health.
• Anyone wanting a single pack that lasts more than a year without repeat purchases.

How to use

Take one tablet of EVO Nutrition Vitamin D3 4000 IU daily with food and water. Since vitamin D3 is fat-soluble, taking it with the fattiest meal of the day raises absorption, and keeping the same time each day helps reach a steady blood level.

Product details

• Form: tablet.
• Per dose: 4000 IU vitamin D3.
• Count: 400 tablets.
• Brand: EVO Nutrition, United Kingdom.

Frequently asked questions

What is the difference between vitamin D3 and vitamin D2?

Vitamin D3 is cholecalciferol, the form the skin produces, and it raises blood calcidiol more steadily. Vitamin D2 is ergocalciferol from plant or fungal sources and differs in how long it persists and how efficiently it raises measured vitamin D.

Why is vitamin D3 best taken with a fatty meal?

Vitamin D3 is fat-soluble and does not dissolve in water, so its intestinal absorption depends on fat micelles forming to carry it. Absorption is therefore clearly higher with a meal containing fat than on an empty stomach.

Does sun exposure replace a vitamin D3 supplement?

Direct sunlight is the primary natural source of vitamin D3, but how much the skin makes depends on season, latitude, skin tone and clothing. Many people therefore use a vitamin D3 supplement to cover the periods when skin synthesis drops.

Cautions

• Not intended for pregnant or breastfeeding women.
• Not intended for anyone under 18 years of age.
• Consult a physician when taking medication for a chronic condition, or with kidney disorders or elevated calcium.
• Not a substitute for a balanced diet.