Cora-DX Vita

Cora-DX Vita is a combination mineral and vitamin supplement used mainly for the prevention and treatment of calcium deficiency states. Its uses can be classified by strength of evidence as follows:

Established/Well-Supported Uses

• Prevention and treatment of dietary calcium deficiency in adults, adolescents, and the elderly.
• Calcium and vitamin D3 supplementation during pregnancy and lactation when dietary intake is insufficient.
• Adjunct therapy (together with diet, exercise, and specific anti-osteoporotic agents such as bisphosphonates) in the prevention and management of osteoporosis, particularly post-menopausal and corticosteroid-induced osteoporosis.
• Supportive therapy in osteomalacia and rickets due to nutritional calcium/vitamin D deficiency.

Adjunct/Guideline-Supported Uses

• Adjunct to standard treatment of hypoparathyroidism, to help correct associated hypocalcemia (used alongside active vitamin D analogues under specialist supervision).
• Supportive supplementation in conditions of increased calcium requirement, such as growth spurts in children and adolescents.

Cora-DX Vita is not intended as a substitute for other prescribed osteoporosis or metabolic bone disease therapy; it is used as an adjunct to ensure adequate calcium and vitamin D status.

Each unit of Calcium Lactate Gluconate + Calcium Carbonate + Vitamin D3 combines two calcium salts with different solubility and absorption characteristics along with vitamin D3:

• Calcium Lactate Gluconate - a highly water-soluble calcium salt that provides rapidly available elemental calcium, especially useful in effervescent/chewable formulations.
• Calcium Carbonate - a concentrated source of elemental calcium (about 40% elemental calcium by weight) that is best absorbed when taken with food due to its dependence on gastric acid.
• Vitamin D3 (Cholecalciferol) - enhances intestinal absorption of calcium and supports normal bone mineralization.

Together, these components provide a combined source of elemental calcium with vitamin D3 to support absorption and utilization.

Cora-DX Vita is a fixed-dose combination nutritional supplement formulated to correct or prevent calcium and vitamin D deficiency. By combining a rapidly soluble calcium salt (calcium lactate gluconate) with a concentrated calcium salt (calcium carbonate), the product aims to provide a steady and efficiently absorbed supply of elemental calcium. Vitamin D3 is included because it is essential for intestinal calcium absorption and for maintaining normal serum calcium and bone mineralization. Cora-DX Vita is commonly available as chewable tablets, effervescent tablets, or oral suspension/syrup, and is used across age groups under medical or pharmacist guidance.

Calcium and Vitamin D3 combination supplement (Minerals and Vitamins - Calcium salts with Vitamin D analogue)

Calcium Lactate Gluconate + Calcium Carbonate + Vitamin D3 works through the combined physiological actions of its components. Calcium lactate gluconate and calcium carbonate dissociate in the gastrointestinal tract to release ionized calcium, which is absorbed primarily in the duodenum and proximal jejunum through both active vitamin D-dependent transport and passive paracellular diffusion. Calcium carbonate absorption is enhanced by gastric acid and is therefore best taken with meals, whereas calcium lactate gluconate is more soluble and less dependent on gastric pH.

Vitamin D3 (cholecalciferol) is hydroxylated in the liver to 25-hydroxyvitamin D and further in the kidney to the active form, 1,25-dihydroxyvitamin D (calcitriol), which increases intestinal expression of calcium-binding proteins and calcium channels, thereby promoting active intestinal calcium absorption. Vitamin D3 also facilitates renal tubular reabsorption of calcium and supports osteoblast-mediated bone mineralization, working synergistically with the calcium salts in Calcium Lactate Gluconate + Calcium Carbonate + Vitamin D3 to maintain calcium homeostasis and skeletal health.

Cora-DX Vita chewable tablets should be chewed well before swallowing; effervescent tablets should be fully dissolved in a glass of water and consumed immediately after dissolution. It is generally recommended to take doses with or shortly after meals, which improves absorption of the calcium carbonate component. If more than one dose per day is prescribed, doses should be spaced several hours apart. Medicines known to interact with calcium (see Interactions) should be separated in timing from Cora-DX Vita as advised.

Cora-DX Vita has clinically significant interactions with several classes of drugs:

• Tetracycline and fluoroquinolone antibiotics: Calcium chelates with these antibiotics in the gut, forming insoluble complexes that reduce antibiotic absorption and efficacy. Doses should be separated by at least 2-3 hours.
• Levothyroxine: Calcium salts reduce intestinal absorption of levothyroxine. Administration should be separated by at least 4 hours.
• Bisphosphonates: Calcium markedly reduces oral bisphosphonate absorption; bisphosphonates should be taken well before Cora-DX Vita, as per the bisphosphonate's own labeling.
• Thiazide diuretics: Concurrent use increases the risk of hypercalcemia due to reduced renal calcium excretion; serum calcium should be monitored.
• Digoxin: Hypercalcemia associated with excessive calcium intake can potentiate digoxin toxicity and increase the risk of cardiac arrhythmias.
• Proton pump inhibitors and H2-receptor antagonists: These reduce gastric acidity and may lower absorption of the calcium carbonate component; calcium lactate gluconate is less affected.
• Corticosteroids: Long-term corticosteroid use reduces intestinal calcium absorption and may increase calcium/vitamin D requirements.
• Iron, zinc, and other divalent mineral supplements: Calcium can reduce absorption of these minerals if taken simultaneously; timing should be separated.

Cora-DX Vita is generally well tolerated at recommended doses. The most common adverse effects are gastrointestinal:

• Constipation
• Bloating and abdominal distension
• Flatulence
• Mild nausea or gastric discomfort

Less commonly, and usually related to excessive or prolonged intake beyond recommended doses, hypercalcemia and its associated symptoms (see Overdose) may occur. Rarely, hypersensitivity reactions such as skin rash or itching have been reported.

Adequate calcium and vitamin D intake is important during pregnancy and lactation, and Cora-DX Vita may be used to supplement dietary intake when advised by a physician. However, doses above those recommended for pregnancy and lactation should be avoided, as excessive maternal calcium or vitamin D intake has been associated with risks such as hypercalcemia. As with any supplement in pregnancy or breastfeeding, Cora-DX Vita should be used only if clearly needed, at the dose recommended by the treating physician, with benefit weighed against any potential risk.

The following precautions apply to the use of Cora-DX Vita:

• Use with caution in patients with mild-to-moderate renal impairment; periodic monitoring of serum calcium and renal function is advisable during prolonged use.
• Use with caution in patients with sarcoidosis, tuberculosis, or other granulomatous diseases, as these conditions can cause increased sensitivity to vitamin D and risk of hypercalcemia.
• Avoid exceeding the recommended daily dose; excessive total calcium intake (from diet plus supplementation) increases the risk of hypercalcemia, hypercalciuria, and nephrolithiasis.
• Use with caution in patients with a history of kidney stones.
• Separate dosing from interacting medicines as described in Interactions to avoid reduced efficacy of those medicines.
• Long-term high-dose use should be under medical supervision with periodic monitoring.

Overdose or prolonged excessive intake of Cora-DX Vita can cause hypercalcemia and hypervitaminosis D, with symptoms that may include nausea, vomiting, constipation, abdominal pain, excessive thirst, increased urination, muscle weakness, confusion, and in severe cases, kidney stones, kidney impairment, or cardiac arrhythmias. If overdose is suspected, discontinue the product and seek immediate medical attention or contact a poison control center; supportive care and monitoring of serum calcium will be required and should only be provided by qualified medical personnel.

Store at room temperature (below 30°C), away from light and moisture. Keep out of reach of children.

Renal impairment: Use with caution in mild-to-moderate renal impairment with monitoring of serum calcium; contraindicated in severe renal impairment (see Contraindications).

Hepatic impairment: No specific dose adjustment is well-established, but caution is advised, and vitamin D activation may be affected in significant hepatic disease.

Elderly: Commonly used in the elderly for calcium/vitamin D3 supplementation as an adjunct in osteoporosis prevention; renal function should be considered.

Pediatric population: Use of chewable/effervescent adult formulations of Cora-DX Vita in young children has not been well established; age-appropriate formulations and pediatrician-directed, weight-based dosing should be used where growth-related calcium needs exist.

Duration of use of Cora-DX Vita depends on the indication. For dietary supplementation, it may be used for as long as dietary intake remains insufficient, under periodic medical review. As an adjunct in osteoporosis management, it is typically continued long-term alongside primary anti-osteoporotic therapy, with periodic monitoring of serum calcium and renal function. Treatment duration for other indications (e.g., osteomalacia, hypoparathyroidism) should be determined by the treating physician based on clinical and biochemical response.

Calcium salts in combination with Vitamin D3 (minerals and vitamins/nutritional supplement class)

The calcium salts in Calcium Lactate Gluconate + Calcium Carbonate + Vitamin D3 dissociate in the gastrointestinal tract to supply ionized calcium for intestinal absorption, while vitamin D3 is converted in the liver and kidney to its active metabolite, calcitriol, which upregulates intestinal calcium-binding proteins and channels to enhance active calcium transport across the intestinal mucosa. This combined action increases the amount of calcium available for bone mineralization, neuromuscular function, and other calcium-dependent physiological processes, while vitamin D3 additionally supports renal calcium reabsorption and osteoblast activity.

The safety and efficacy of Cora-DX Vita chewable or effervescent adult tablet formulations have not been formally established in young children. Where calcium and vitamin D supplementation is needed in children (e.g., during periods of rapid growth or documented deficiency), age-appropriate formulations (such as pediatric syrups) and weight/age-based dosing directed by a pediatrician should be used instead. Excessive vitamin D intake in children carries a particular risk of hypercalcemia and should be avoided.