Is alfacalcidol and calcitriol the same?

However, alfacalcidol is a prohormone of calcitriol. It has to be converted by 25-hydroxylase at the liver to generate 1,25-dihydroxyvitamin D3 to act on target cells. Many pharmacokinetics studies demonstrate that alfacalcidol has lower AUC compared to calcitriol if they are administered in the same dose.

What is the difference between alfacalcidol and cholecalciferol?

Only alfacalcidol affected the formation of histologically normal new bone tissue with a good integration into the surrounding osteoporotic bone. Cholecalciferol allowed callus mineralization and led to the formation of new bone with high quantity, with characteristics, similar to those of the control group.

What is the difference between alfacalcidol and vitamin D?

Due to strong feedback regulation, plain vitamin D is not activated in the kidney in vitamin-replete patients, while alfacalcidol, having been hydroxylated at position 1, bypasses regulation and increases available amounts of active D-hormone in different target tissues.

When do you give calcitriol and alfacalcidol?

1 In patients with CKD Stages 3 and 4, therapy with an active oral vitamin D sterol (calcitriol, alfacalcidol, or doxercalciferol) is indicated when serum levels of 25(OH)-vitamin D are >30 ng/mL (75 nmol/L), and plasma levels of intact PTH are above the target range for the CKD stage (see Table 15, Guideline 1).

What are the side effects of alfacalcidol?


  • Common or very common. Abdominal discomfort; hyperphosphataemia; rash pustular.
  • Uncommon. Malaise; urolithiases.
  • Rare or very rare. Dizziness.
  • Frequency not known. Confusion; renal impairment.

When should I take alfacalcidol?

Take alfacalcidol exactly as your doctor tells you to. It is usually taken as one dose a day. Try to take your doses at the same time of day each day, as this will help you to remember to take it regularly.

Can I take vitamin D with alfacalcidol?

The therapeutic efficacy of Alfacalcidol can be decreased when used in combination with Trilostane. The risk or severity of adverse effects can be increased when Alfacalcidol is combined with Vitamin D. Take with or without food. Food does not affect the bioavailability.

What is the use of alfacalcidol?

Alfacalcidol is a vitamin D supplement used to treat deficiency in conditions including hypocalcemia (low blood calcium levels), rickets (bone weakness), and others. Ergocalciferol is a class of medication called vitamin D analogs. This works by helping the body to use more calcium in foods or supplements.

Does alfacalcidol increase vitamin D?

The results indicate that (1) in OVX rats, alfacalcidol increases BMD and bone strength more effectively than vitamin D(3) at given urinary and serum Ca levels: larger doses of vitamin D(3) are required to produce a similar BMD-increasing effect, in the face of hypercalcemia and compromised bone quality; (2) at doses …

When do you give alfacalcidol?

Is it safe to take alfacalcidol?

Alfacalcidol can cause some serious side effects and can lead to some serious health problems. Talk with your doctor if you are having any serious problems.

What is alfacalcidol prescribed for?

Although alfacalcidol is widely used in the treatment of osteoporosis, its mechanism of action in bone is not fully understood. Alfacalcidol stimulates intestinal calcium (Ca) absorption, increases urinary Ca excretion and serum Ca levels, and suppresses parathyroid hormone (PTH) secretion.

What’s the difference between alfacalcidol and calcitrol?

On the other hand, Calcitrol is only available in capsule form. Alfacalcidol is usually prescribed if your goal is just to promote strong, healthy bones. On the other hand, Calcitrol is usually prescribed if the person is suffering from a more serious ailment like renal osteodystrophy and postmenopausal osteoporosis.

Which is better for you vitamin D or alfacalcidol?

Alfacalcidol (or 1-hydroxycholecalciferol) is an analogue of vitamin D used for supplementation in humans and as a poultry feed additive. Alfacalcidol has a weaker impact on calcium metabolism and parathyroid hormone levels than calcitriol, however alfacalcidol has significant effects on the immune system, including regulatory T cells.

What should be the initial dose of calcitriol?

ยท Initial dose 0.25 mcg. In patient with normal or only slightly reduced serum calcium levels, doses of 0.25 mcg EOD is sufficient Initial dose adult and child above 20kg BW: 1 mcg daily; child under 20kg BW: 0.05 mcg/kg/day.

Which is better for you paricalcitol or calcitriol?

The only comparative studies conducted to date (paricalcitol vs intravenous calcitriol) have not been presented or published. However, data from these studies are available in the public domain via the FDA and show no convincing difference in efficacy or safety.