Skip to content
Clinical Trials – home

Ergocalciferol (Vitamin D2): A Comprehensive Guide for Patients

0 / 1
trials open to patients / all trials
9+
Countries

In short

Ergocalciferol, also known as vitamin D2, is being studied in various clinical trials to explore its potential benefits in different medical conditions. These trials aim to investigate the effects of ergocalciferol supplementation on vitamin D levels, immune function, kidney health, and other health outcomes. The research focuses on determining optimal dosing, safety, and efficacy of ergocalciferol in treating vitamin D deficiency and related health issues.

At a glance

Main Uses
Treatment of vitamin D deficiency, kidney diseases, chronic pain, inflammation
Dosage Forms
Oral capsules or tablets, various strengths (e.g., 50,000 IU)
Common Dosing
Weekly (e.g., 50,000 IU/week) or monthly doses, varying by study
Duration of Studies
Ranging from several weeks to 12 months
Primary Outcomes
Serum 25-hydroxyvitamin D levels, inflammatory markers, pain scores
Secondary Outcomes
Calcium levels, phosphate levels, parathyroid hormone levels, immune function
Patient Populations
Kidney disease patients, burn injury patients, pregnant women, healthy adults
Safety Monitoring
Serum calcium, phosphate levels, adverse events tracking

What is Ergocalciferol?

Ergocalciferol, also known as Vitamin D2, is a form of vitamin D that plays a crucial role in maintaining bone health and supporting various bodily functions. It is similar in structure to steroids and is produced when the skin is exposed to sunlight. Ergocalciferol is available as a supplement and is often used to treat vitamin D deficiency.

Other names for ergocalciferol include: Drisdol Calciferol Calcidol Vitamin D2

Medical Uses

Ergocalciferol is primarily used to treat or prevent vitamin D deficiency. It has several important functions in the body: Regulating calcium and phosphorus levels: This helps maintain strong bones and teeth. Supporting normal growth in children: Adequate vitamin D is essential for proper bone development. Aiding in amino acid reabsorption in the kidneys: This process helps the body utilize proteins more efficiently.

Ergocalciferol is used to treat various conditions associated with vitamin D deficiency, including: Kidney stones: In some cases, vitamin D supplementation may help manage calcium levels in patients with kidney stones. Chronic kidney disease: Patients with kidney problems often have low vitamin D levels and may benefit from supplementation. Hypovitaminosis D: This is the medical term for vitamin D deficiency.

Dosage and Administration

The dosage of ergocalciferol can vary depending on the condition being treated and the severity of vitamin D deficiency. Some common dosing regimens observed in clinical trials include: 200,000 IU as a single dose 50,000 IU weekly for 8 weeks 40,000 IU, 60,000 IU, or 80,000 IU weekly It's important to note that these doses are used in clinical trials and may not be appropriate for everyone. Always follow your healthcare provider's instructions regarding dosage and administration.

Potential Benefits

Research suggests that maintaining adequate vitamin D levels through ergocalciferol supplementation may have several potential benefits: Improved bone health: Vitamin D helps the body absorb calcium, which is essential for strong bones. Enhanced immune function: Some studies suggest that vitamin D may help support the immune system. Reduced inflammation: There is ongoing research into the potential anti-inflammatory effects of vitamin D. Possible pain reduction: Some studies are investigating whether vitamin D supplementation can help reduce chronic pain, particularly after burn injuries.

Safety and Side Effects

Ergocalciferol is generally considered safe when used as directed by a healthcare provider. However, as with any medication, there can be potential side effects or risks: Changes in calcium levels: Your doctor may monitor your blood calcium levels while taking ergocalciferol. Changes in phosphate levels: Phosphate levels may also be affected and monitored. Potential interactions with other medications: Always inform your healthcare provider about all medications you're taking. It's important to follow your doctor's instructions carefully and report any unusual symptoms or side effects.

Ongoing Research

Scientists are continually studying ergocalciferol to better understand its effects and potential uses. Some areas of ongoing research include: Impact on immune function: Researchers are investigating how vitamin D affects the immune system, particularly in patients with kidney disease. Pain management: Studies are exploring whether vitamin D supplementation can help reduce chronic pain, especially after injuries like burns. Effects on inflammation and insulin resistance: Some research is looking at how vitamin D levels might influence inflammation and insulin sensitivity in the body. Pregnancy outcomes: Studies are examining the effects of vitamin D supplementation during pregnancy on both mothers and babies. These ongoing studies may provide more insights into the potential benefits and uses of ergocalciferol in the future.

Questions people often ask

Conditions where Ergocalciferol is being studied

Each condition opens its own overview and trial list

Trials with Ergocalciferol

Recruiting trials first

See all 1 →
Quick filters
Clinical Trials Concierge

Prefer not to search? Our Concierge searches the trials for you.

Tell us about your condition – we search every trial in Europe and connect you with the right site.

Legal notice · Published by CTIN POLAND sp. z o.o., ul. rtm. Witolda Pileckiego 67/109, 02-781 Warsaw, Poland · KRS 0001111334 · REGON 528919042 · NIP 9512598637

© 2026 Clinical Trials EU – European Clinical Trials Information Network

GDPR compliance, ISO 9001 and ISO 27001 certified (LL-C Certification)

On this site, “treatment” means an investigational medicine being studied in a clinical trial. Its safety and efficacy for the use being studied have not yet been confirmed, some participants may receive a placebo or a comparator medicine, and taking part does not guarantee any health benefit. The decision to take part is made by the doctor at the research site. This site is for information only and does not replace medical advice.

This service is not affiliated with the European Commission, the EMA, or the official CTIS system. Most information comes from publicly available international clinical-trial registries, supplemented by data from academic sites, national regulators and commercial sponsors. On this site, “treatment” and “therapy” mean a medicine being tested in a clinical trial. Its safety and effectiveness in the use being studied are not yet confirmed, some participants may receive a placebo or a comparator, and taking part does not guarantee a health benefit. The doctor at the research site decides who can take part. This site provides information, not medical advice. Certain content and visual elements on this website have been generated or enhanced using artificial intelligence (AI).