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ALDEXINA 25,000 IU HARD CAPSULES

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About the medicine

How to use ALDEXINA 25,000 IU HARD CAPSULES

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This page provides general information and does not replace a doctor’s consultation. Always consult a doctor before taking any medication. Seek urgent medical care if symptoms are severe.

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Introduction

Package Leaflet: Information for the User

Aldexina 25,000 IU Hard Capsules

Aldexina 50,000 IU Hard Capsules

Colecalciferol (Vitamin D3)

Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.

  • Keep this leaflet, you may need to read it again.
  • If you have any further questions, ask your doctor, pharmacist, or nurse.
  • This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as yours.
  • If you get any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. See section 4.

Contents of the Package Leaflet

  1. What is Aldexina and what is it used for
  2. What you need to know before you take Aldexina
  3. How to take Aldexina
  4. Possible side effects
  5. Storage of Aldexina
  6. Package Contents and Further Information

1. What is Aldexina and what is it used for

Aldexina contains the active substance colecalciferol (Vitamin D3). Vitamin D3 can be found in some foods and is produced by the body when the skin is exposed to sunlight. Vitamin D helps the body absorb calcium in the kidneys and intestines, which helps form bones. A deficiency of Vitamin D is the main cause of rickets (poor bone mineralization in children) and osteomalacia (inadequate bone mineralization in adults).

Colecalciferol is used to prevent and treat Vitamin D deficiency in adults.

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2. What you need to know before you take Aldexina

Do not takeAldexinaif:

  • you are allergic to Vitamin D3 or any of the other ingredients of this medicine (listed in section 6)
  • you have high levels of calcium in your blood (hypercalcemia) or urine (hypercalciuria)
  • you have kidney stones (renal calculi) or severe kidney failure
  • you have high levels of Vitamin D3 in your blood (hypervitaminosis D)
  • you are allergic to peanuts or soy, as it contains soybean oil.

Warnings and Precautions

Consult your doctor, pharmacist, or nurse before taking colecalciferol if you:

  • are being treated with certain heart medications (e.g., cardiac glycosides, such as digoxin)
  • have sarcoidosis (an autoimmune disease that can cause increased levels of Vitamin D in the body)
  • are being treated with diuretics (e.g., benzothiadiazine)
  • are immobilized
  • have pseudo-hypoparathyroidism
  • are being treated with medications containing Vitamin D3, or taking foods or milk enriched with Vitamin D3
  • are likely to be exposed to a lot of sunlight while taking colecalciferol
  • take other supplements that contain calcium. Your doctor should monitor your calcium levels in your blood to ensure they are not too high during your treatment with colecalciferol
  • have kidney disease or tend to form kidney stones. Your doctor may want to monitor your calcium levels in your blood and urine
  • your doctor should monitor your calcium levels in your blood through laboratory tests if your daily intake of Vitamin D3 exceeds 1,000 IU for a prolonged period.

Children and Adolescents

Use is not recommended in children and adolescents under 18 years of age.

Other Medicines and Aldexina

Tell your doctor or pharmacist if you are taking, have recently taken, or might take any other medicines. This is especially important if you are taking:

  • medicines for heart or kidney disease, such as cardiac glycosides (e.g., digoxin) or diuretics (e.g., bendroflumethiazide). When these medicines are used at the same time as Vitamin D3, they can cause a significant increase in calcium levels in your blood and urine
  • medicines that contain Vitamin D3 or foods rich in Vitamin D3, such as some types of milk enriched with Vitamin D3
  • actinomycin (a medicine used to treat certain types of cancer) and imidazole antifungals (e.g., clotrimazole and ketoconazole, which are medicines used to treat fungal diseases). These medicines can interfere with the processing of Vitamin D3 in your body
  • medicines to treat tuberculosis, such as rifampicin and isoniazid
  • the following medicines, as they may interfere with the effect or absorption of Vitamin D3:
    • antiepileptic medicines (anticonvulsants), barbiturates;
    • glucocorticoids (steroid hormones such as hydrocortisone or prednisolone), as they may reduce the effect of Vitamin D3;
    • medicines that lower cholesterol levels in your blood (such as cholestyramine or colestipol);
    • certain medicines used to lose weight by reducing fat absorption (e.g., orlistat);
    • certain laxatives (such as liquid paraffin).

Taking Aldexina with Food, Drinks, and Alcohol

You should take colecalciferol preferably with food to help the absorption of Vitamin D3.

Pregnancy, Breastfeeding, and Fertility

If you are pregnant or breastfeeding, think you may be pregnant, or are planning to have a baby, ask your doctor or pharmacist for advice before taking this medicine.

This high concentration is not recommended for use in pregnant or breastfeeding women.

Driving and Using Machines

Information on the possible effects of this medicine on the ability to drive is limited. However, it is not expected to affect your ability to drive or use machines.

Excipients

Sucrose

This medicine contains sucrose. If your doctor has told you that you have an intolerance to some sugars, consult with them before taking this medicine.

Soybean Oil

This medicine contains soybean oil. Do not use this medicine if you are allergic to peanuts or soy.

Orange Yellow S

This medicine may cause allergic reactions.

3. How to Take Aldexina

Follow exactly the administration instructions of the medicine contained in this leaflet or as indicated by your doctor or pharmacist. If in doubt, ask your doctor or pharmacist.

The capsule should be swallowed whole (e.g., with water).

Colecalciferol should be taken preferably with food.

For patients with difficulty swallowing, the capsule can be opened and the dispersible granules poured into a half glass of water to facilitate administration.

Use in Adults

The recommended dose is one 25,000 IU capsule per week for the first month. After the first month, the dose may be reduced.

High doses may be required:

50,000 IU/week for 6-8 weeks.

This initial treatment may be followed by maintenance therapy, as indicated by your doctor.

Your doctor will adjust the dose for you.

Pediatric Population

Colecalciferol is not recommended in children and adolescents under 18 years of age.

Pregnancy and Breastfeeding

Colecalciferol is not recommended.

If you Take More Aldexina than You Should

If you take more than the prescribed amount, stop taking the medicine and call your doctor. If you cannot contact your doctor, go to the emergency department of the nearest hospital and take the medicine package with you.

You can also contact the Toxicology Information Service, phone 915620420, indicating the medicine and the amount taken.

The most common symptoms of overdose are: nausea, vomiting, excessive thirst, excessive urine production for 24 hours, constipation, dehydration, and high levels of calcium in the blood and urine (hypercalcemia and hypercalciuria) determined in clinical tests.

If you Forget to Take Aldexina

If you forget to take a dose of colecalciferol, take the next missed dose as soon as possible. Then, take the next dose at the usual time. However, if it is close to the time of the next dose, do not take the missed dose and take the next dose at the usual time.

If you have any other questions about the use of this medicine, ask your doctor or pharmacist.

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4. Possible Side Effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

The possible side effects associated with the use of colecalciferol may be:

Uncommon(affect up to 1 in 100 people):

  • Excess calcium in the blood (hypercalcemia)
  • Excess calcium in the urine (hypercalciuria)

Rare(affect up to 1 in 1,000 people):

  • Skin rash (rash or skin eruption)
  • Itching (pruritus)
  • Urticaria

Reporting of Side Effects

If you experience any side effects, talk to your doctor, pharmacist, or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly through the Spanish Pharmacovigilance System for Human Use Medicines: https://www.notificaram.es. By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storage of Aldexina

Keep this medicine out of the sight and reach of children.

Do not use this medicine after the expiry date which is stated on the packaging after EXP. The expiry date is the last day of the month shown.

Store below 25°C.

Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help protect the environment.

6. Package Contents and Further Information

Composition of Aldexina

The active substance is colecalciferol (Vitamin D3)

One capsule contains:

25,000 IU (0.625 mg) of colecalciferol in the form of concentrated colecalciferol powder.

50,000 IU (1.250 mg) of colecalciferol in the form of concentrated colecalciferol powder.

The other excipients are:

Aldexina 25,000 IU Hard Capsules:

Contents of the hard capsule

Gelatin, sucrose, cornstarch, partially hydrogenated soybean oil, all-rac-α-tocopherol, silicon dioxide.

Composition of the capsule

Body of the capsule: quinoline yellow (E-104), orange yellow S (E-110), titanium dioxide (E-171), gelatin.

Cap of the capsule: iron oxide red (E-172), orange yellow S (E-110), titanium dioxide (E-171), gelatin.

Aldexina 50,000 IU Hard Capsules:

Contents of the hard capsule

Gelatin, sucrose, cornstarch, partially hydrogenated soybean oil, all-rac-α-tocopherol, silicon dioxide.

Composition of the capsule

Body of the capsule: quinoline yellow (E-104), orange yellow S (E-110), titanium dioxide (E-171), gelatin.

Cap of the capsule: iron oxide black (E-172), titanium dioxide (E-171), gelatin.

Appearance of the Product and Package Contents

Aldexina 25,000 IU is a hard capsule with a yellow body and an orange cap. The capsule size is 18 mm. It contains a white-yellowish powder and is supplied in Poliamide/Aluminum/PVC-Aluminum blisters in cardboard boxes.

Each box may contain 4 and 8 capsules.

Aldexina 50,000 IU is a hard capsule with a yellow body and a black cap. The capsule size is 24 mm. It contains a white-yellowish powder and is supplied in Poliamide/Aluminum/PVC-Aluminum blisters in cardboard boxes.

Each box may contain 2 and 4 capsules.

Marketing Authorization Holder and Manufacturer

Laboratorios Alter, S.A.

Mateo Inurria, 30

28036 Madrid

Spain

Date of the Last Revision of this Leaflet: February 2024

Detailed and updated information on this medicine is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) http://www.aemps.gob.es/.

Online doctors for ALDEXINA 25,000 IU HARD CAPSULES

Discuss questions about ALDEXINA 25,000 IU HARD CAPSULES, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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Tarek Agami

General medicine 11 years exp.

Dr. Tarek Agami is a general practitioner registered in both Portugal and Israel, with broad experience in family and preventive medicine. He offers online consultations for adults and children, providing personalised support for primary care needs, chronic disease management, and everyday health concerns.

Dr. Agami received clinical training and worked in leading medical institutions in Israel (Kaplan Medical Center, Barzilai Medical Center, Wolfson Medical Center) and Portugal (European Healthcare City, Viscura Internacional, Hospital Dr. José Maria Grande, Hospital Vila Franca de Xira). His approach combines international medical standards with individualised attention to each patient.

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Dr. Agami provides medical support for patients using GLP-1 medications (such as Ozempic or Mounjaro) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Portugal and Israel.

Dr. Agami is committed to evidence-based, patient-centred care, ensuring that each person receives trusted medical support tailored to their health goals.

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Nuno Tavares Lopes

Family medicine 18 years exp.

Dr. Nuno Tavares Lopes is a licensed physician in Portugal with 17 years of experience in emergency medicine, family and general practice, and public health. He is the Director of Medical and Public Health Services at an international healthcare network and serves as an external consultant for the WHO and ECDC.

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Dr. Nuno Tavares Lopes provides medical support for patients using GLP-1 medications (Mounjaro, Wegovy, Ozempic, Rybelsus) as part of a weight loss strategy. He offers individualised treatment planning, regular follow-up, dose adjustment, and advice on combining medication with sustainable lifestyle changes. Consultations follow the medical standards accepted in Europe.

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Anastasiia Shalko

Family medicine 13 years exp.

Dr. Anastasiia Shalko is a general practitioner with a background in both paediatrics and general medicine. She graduated from Bogomolets National Medical University in Kyiv and completed her paediatric internship at the P.L. Shupyk National Medical Academy of Postgraduate Education. After working as a paediatrician in Kyiv, she relocated to Spain, where she has been practising general medicine since 2015, providing care for both adults and children.

Her work focuses on urgent, short-term medical concerns – situations where patients need quick guidance, symptom assessment and clear next steps. She helps people understand whether their symptoms require in-person evaluation, home management or a change in treatment. Common reasons for booking an online consultation include:

  • acute respiratory symptoms (cough, sore throat, runny nose, fever)
  • viral illnesses such as colds and seasonal infections
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Dr. Shalko works specifically with urgent and short-term problems, providing practical recommendations and helping patients determine the safest next step. She explains symptoms clearly, guides patients through decision-making and offers straightforward medical advice for everyday acute issues.

She does not provide long-term management of chronic conditions, ongoing follow-up or comprehensive care plans for complex long-term illnesses. Her consultations are designed for acute symptoms, sudden concerns and situations where timely medical input is important.

With clinical experience in both paediatrics and general medicine, Dr. Shalko confidently supports adults and children. Her communication style is clear, simple and reassuring, helping patients feel informed and supported throughout the consultation.

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Tomasz Grzelewski

Dermatology 21 years exp.

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques.

For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance.

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Frequently Asked Questions

Is a prescription required for ALDEXINA 25,000 IU HARD CAPSULES?
ALDEXINA 25,000 IU HARD CAPSULES requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.
What is the active substance in ALDEXINA 25,000 IU HARD CAPSULES?
The active ingredient in ALDEXINA 25,000 IU HARD CAPSULES is colecalciferol. This information helps identify medicines with the same composition but different brand names.
How much does ALDEXINA 25,000 IU HARD CAPSULES cost in pharmacies?
The average pharmacy price for ALDEXINA 25,000 IU HARD CAPSULES is around 9.37 EUR. Prices may vary depending on the manufacturer and dosage form.
Who manufactures ALDEXINA 25,000 IU HARD CAPSULES?
ALDEXINA 25,000 IU HARD CAPSULES is manufactured by Laboratorios Alter S.A.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of ALDEXINA 25,000 IU HARD CAPSULES online?
Doctors such as Family doctors, Psychiatrists, Dermatologists, Cardiologists, Endocrinologists, Gastroenterologists, Pulmonologists, Nephrologists, Rheumatologists, Hematologists, Infectious disease physicians, Allergists, Geriatricians, Paediatricians, Oncologists may assess whether ALDEXINA 25,000 IU HARD CAPSULES is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.
What are the alternatives to ALDEXINA 25,000 IU HARD CAPSULES?
Other medicines with the same active substance (colecalciferol) include ALDEXINA 50,000 IU HARD CAPSULES, BENFEROL CHOQUE 50,000 IU SOFT GEL CAPSULES, BENFEROL MENSUAL 25,000 IU Soft Capsules. These may have different brand names or formulations but contain the same therapeutic ingredient. Always consult a doctor before switching or starting a new medicine.
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