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Home > Drug Category > Over The Counter (OTC) Non - Prescription > Vitamin D and Equivalent

* Customers who buy Vitamin D may also: Arcalion, Berocca, Calcia, or Vitamin B12

Why Buy Vitamin D or Generic Cholecalciferol from BigMountainDrugs.com?

Buy Vitamin D or generic cholecalciferol online from BigMountainDrugs.com with secure order processing, competitive pricing, and discreet home delivery. Serving customers since 2007 with an average 4.9-star customer rating, we make ordering quick and easy. Choose the option that matches your needs and budget, then submit your order in just a few minutes. No prescription is required.

Key Benefits of Ordering from Big Mountain:

• Accredited by the Canadian International Pharmacy Association (CIPA) and the International Pharmacy Association of British Columbia (IPABC)
• Fast, secure, and easy online ordering
•Friendly, knowledgeable customer support
• Earn 5% rewards on eligible purchases
• Convenient home delivery

Ready to order? Visit our How to Order page for step-by-step instructions or browse our FAQ for more information about ordering and shipping.

What Dosage Strengths Are Available for Vitamin D and Generic Cholecalciferol?

Vitamin D and generic cholecalciferol are available in different formulations with the following strengths:
• Tablet: 400 IU, 1000 IU
• Drops for Baby: 400 IU per drop
• SoftGel Capsule: 2000 IU

Your healthcare provider will determine the appropriate formulation and dose for your needs. Order the strength recommended by your healthcare provider.

What is Vitamin D (Cholecalciferol) Used For?

Vitamin D (Cholecalciferol) is a vitamin supplement used to treat and prevent several conditions related to bone density, calcium regulation, and hormone imbalances. It is used to treat Vitamin D deficiency, which occurs when blood levels of vitamin D fall below normal limits due to poor diet, lack of sunlight, or intestinal absorption issues. It is also used to treat nutritional rickets, a condition in children where soft, weak bones develop due to inadequate vitamin D or calcium. Likewise, it is also used to treat osteomalacia, the adult equivalent of rickets, characterized by painful, softened bones caused by poor bone mineralization.

It is also used alongside calcium to slow down bone density loss and prevent fractures in postmenopausal women and older adults with osteoporosis. It is also used with calcium supplements to treat hypoparathyroidism, a condition in which the parathyroid glands do not produce enough parathyroid hormone, leading to dangerously low blood calcium levels. Likewise, it is also used along with phosphate supplements to treat familial hypophosphatemia. This genetic disorder disrupts phosphorus handling in the kidneys and bones (though active forms like calcitriol or alfacalcidol are more frequently prescribed for this condition). Cholecalciferol works through a continuous biological pathway that turns an inactive compound into a functional hormone. Once ingested, cholecalciferol enters the bloodstream and travels to the liver, where enzymes convert it into calcidiol (25-hydroxyvitamin D), the primary circulating storage form of the vitamin. Calcidiol then travels to the kidneys, where a second enzyme converts it into calcitriol (1,25-dihydroxyvitamin D), the fully active hormonal form.

Calcitriol works by binding to vitamin D receptors in the intestines and bones. This action stimulates the active transport of calcium and phosphate across the intestinal wall and into the bloodstream. This ensures sufficient calcium and phosphorus are available to mineralize and harden bone matrix properly, thereby preventing fractures and other bone complications associated with these conditions. Restoring calcium levels also helps suppress the overproduction of parathyroid hormone, which otherwise triggers bone destruction.

Always take cholecalciferol exactly as recommended by your healthcare provider. For complete safety information, view the full Product monograph.

What Side Effects Can Vitamin D or Generic Cholecalciferol Cause?

This medication is generally well tolerated at standard dietary doses. However, some mild side effects may occur, especially at higher-than-normal doses. These include constipation, flatulence, nausea, stomach pain, and diarrhea. Contact your doctor if these mild side effects persist or worsen.

Serious side effects may include:
• Allergic reactions: Hives, swelling of the face, lips, tongue, or throat, or difficulty breathing or swallowing
• High blood calcium (hypercalcemia): with symptoms like bone pain, constipation, depression, fatigue, confusion, and excessive thirst
• Hypercalciuria (too much calcium in your urine): blood in urine, pain when urinating, urinating frequently, stomach pain, or feeling weak
• Laryngeal edema (swelling of the larynx): change in voice, hoarseness, constant feeling to clear the throat (this is a rare form of severe allergic reaction/anaphylaxis)

Contact your doctor or seek immediate medical attention if you experience any of these serious side effects. Inform your doctor about any other side effects you notice that are not listed here.

Warnings

Do not take this supplement without strict medical supervision if you have:
• Active kidney stones
• Allergic reaction to cholecalciferol, or other ingredients in Vitamin D
• Disturbed parathyroid hormone metabolism
• Hypercalcemia (high blood calcium levels)
• Hypervitaminosis D (high vitamin D levels)
• Malabsorption syndrome (While malabsorption makes absorption difficult, patients with malabsorption are often given higher or specialized doses of Vitamin D under medical supervision rather than avoiding it entirely)
• Sarcoidosis or other granulomatous disorders (immune system disorders which may cause uncontrolled activation and increased levels of vitamin D in the body)

Also, before taking this medication, ensure that you inform your doctor about any prior or current medical conditions, including the following:
• Difficulty moving around (Immobilization, which increases hypercalcemia risk)
• Heart disease
• Kidney disease or impaired kidney function (which affects conversion to active calcitriol)

Taking diuretics, specifically thiazide diuretics, alongside cholecalciferol can increase the risk of hypercalcemia because thiazides decrease calcium excretion in the kidneys, leading to accumulation in the blood. Likewise, in individuals taking digoxin, cholecalciferol-induced hypercalcemia can precipitate dangerous abnormal heartbeats. Therefore, before using this medication, inform your doctor about any other medications you are currently taking, including herbal medicines and supplements, to determine if it is safe to use along with cholecalciferol.

This medication is generally safe to use for pregnant women at routine recommended daily doses. However, high-dose over-supplementation during pregnancy should be avoided, as severe hypercalcemia can harm the developing fetus. This medication is excreted in breast milk and should be used with caution and appropriate monitoring in breastfeeding women. Your doctor will monitor your calcium and phosphorus levels regularly and may adjust your dose of cholecalciferol depending on your levels. Store this medicine at room temperature and keep away from children and pets.

Do I need a prescription to order Vitamin D?

No, a prescription is not required from your physician to order Vitamin D.