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Calsus

Ask a doctor about a prescription for Calsus

5.0(25)
Doctor

Anna Biriukova

General medicine5 years of experience

Dr Anna Biriukova is an internal medicine doctor with clinical experience in cardiology, endocrinology, and gastroenterology. She provides online consultations for adults, offering expert medical support for heart health, hormonal balance, digestive issues, and general internal medicine.

Cardiology – Diagnosis and treatment of:

  • High blood pressure, blood pressure fluctuations, and cardiovascular risk prevention.
  • Chest pain, shortness of breath, arrhythmias (tachycardia, bradycardia, palpitations).
  • Leg swelling, chronic fatigue, reduced exercise tolerance.
  • EKG interpretation, lipid profile evaluation, cardiovascular risk assessment (heart attack, stroke).
  • Post-COVID-19 cardiac monitoring and care.
Endocrinology – Diabetes, thyroid, metabolism:
  • Diagnosis and management of type 1 and type 2 diabetes, and prediabetes.
  • Individual treatment plans including oral medications and insulin therapy.
  • GLP-1 therapy– modern pharmacological treatment for weight management and diabetes control, including drug selection, monitoring, and safety follow-up.
  • Thyroid disorders – hypothyroidism, hyperthyroidism, autoimmune thyroid diseases (Hashimoto’s, Graves’ disease).
  • Metabolic syndrome – obesity, lipid disorders, insulin resistance.
Gastroenterology – Digestive health:
  • Abdominal pain, nausea, heartburn, gastroesophageal reflux (GERD).
  • Stomach and intestinal conditions: gastritis, irritable bowel syndrome (IBS), indigestion.
  • Management of chronic digestive disorders and interpretation of tests (endoscopy, ultrasound, labs).
General internal medicine and preventive care:
  • Respiratory infections – cough, colds, bronchitis.
  • Lab test analysis, therapy adjustments, medication management.
  • Adult vaccinations – planning, contraindications assessment.
  • Cancer prevention – screening strategies and risk assessment.
  • Holistic approach – symptom relief, complication prevention, and quality of life improvement.
Dr Biriukova combines internal medicine with specialist insight, offering clear explanations, personalised treatment plans, and comprehensive care tailored to each patient.
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This page is for general information. Consult a doctor for personal advice. Call emergency services if symptoms are severe.
About the medicine

How to use Calsus

Package Leaflet: Information for

the user

Calsus, 25,000 IU, soft capsules

Cholecalciferol

Read the package leaflet carefully before taking the medicine, as it contains important information for the patient.

  • Keep this leaflet, you may need to read it again.
  • If you have any further questions, ask your doctor or pharmacist.
  • This medicine has been prescribed for you. Do not pass it on to others. It may harm them, even if their symptoms are the same as yours.
  • If you experience any side effects, including those not listed in this leaflet, tell your doctor or pharmacist. See section 4.

Table of Contents of the Leaflet

  • 1. What is Calsus and what is it used for
  • 2. Important information before taking Calsus
  • 3. How to take Calsus
  • 4. Possible side effects
  • 5. How to store Calsus
  • 6. Contents of the pack and other information

1. What is Calsus and what is it used for

Calsus contains the active substance cholecalciferol (vitamin D), which regulates the absorption and metabolism of calcium and bone mineralization. Calsus is used to prevent and treat vitamin D deficiency in adults and adolescents (children over 12 years of age). Calsus is also used as a supplement to proper treatment of bone loss (osteoporosis) in adult patients, preferably in combination with calcium.

2. Important information before taking Calsus

When not to take Calsus:

  • if you are allergic to cholecalciferol or any of the other ingredients of this medicine (listed in section 6);
  • if you have hypercalcemia (high blood calcium levels) or hypercalciuria (high urine calcium levels);
  • if you have kidney stones or are prone to kidney stone formation;
  • if you have severe kidney function disorders;
  • if you are hypersensitive to peanuts or soy.

If any of the above applies to you, consult your doctor or pharmacist before taking Calsus. 1/5

Warnings and precautions

Before starting treatment with Calsus, discuss it with your doctor or pharmacist:

  • if you have sarcoidosis (a disease that affects the connective tissue in the lungs, skin, and joints);
  • if you are taking other medicines containing vitamin D;
  • if you have kidney disease;

Children and adolescents

This medicine is not intended for use in children under 12 years of age.

Calsus and other medicines

Tell your doctor or pharmacist about all medicines you are taking, have recently taken, or might take, especially:

  • thiazide diuretics (medicines used to treat high blood pressure);
  • phenytoin or barbiturates (medicines used to treat epilepsy);
  • glucocorticoids (medicines used to treat inflammatory conditions);
  • digoxin (a medicine used to treat heart conditions);
  • cholestyramine (a medicine used to treat high cholesterol levels);
  • laxatives, e.g., those containing liquid paraffin;
  • actinomycin (a medicine used in chemotherapy);
  • imidazole (an antifungal medicine);
  • rifampicin (an antibiotic);
  • isoniazid (an antibiotic).

Calsus with food and drink

Swallow the Calsus capsule whole with water, preferably during a meal.

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. Calsus is not recommended during pregnancy. Calsus can be used during breastfeeding. Vitamin D passes into breast milk. This should be taken into account when giving additional vitamin D to a breastfed child. There are no data on the effect of vitamin D on fertility. However, it is not expected that normal vitamin D levels will have any adverse effect on fertility. 2/5

3. How to take Calsus

Always take this medicine exactly as your doctor has told you. If you are not sure, ask your doctor or pharmacist. Swallow the capsules whole with water. It is best to take Calsus with a meal to help your body absorb the vitamin D.

Adults and adolescents

Prevention of vitamin D deficiency
The recommended dose is one capsule (25,000 IU) per month.
Initial treatment of vitamin D deficiency
The dose will be adjusted according to the patient's blood vitamin D levels (25-hydroxycholecalciferol (25(OH)D)).
The recommended dose is 100,000 IU (4 capsules of 25,000 IU) taken once in the first month.
A maintenance dose of one capsule of 25,000 IU per month may be considered after the initial dose of 100,000 IU.
Calsus used as a supplement to proper treatment of osteoporosis in adult patients
The recommended dose is one capsule (25,000 IU) per month.

Use in children

Calsus in the form of 25,000 IU capsules is not intended for use in children under 12 years of age. Other forms of this medicine may be more suitable for children. Consult your doctor or pharmacist.

Overdose of Calsus

If you take more than you should, contact your doctor or emergency department immediately for assessment of the risk and advice. The most common symptoms of overdose are: nausea, vomiting, excessive thirst, increased urination within 24 hours, constipation, and dehydration, as well as high blood calcium levels (hypercalcemia and hypercalciuria) confirmed by laboratory tests.

Missed dose of Calsus

Do not take a double dose to make up for a forgotten dose.

Stopping treatment with Calsus

If you want to stop taking this medicine, discuss it with your doctor. If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them. Stop taking Calsus and contact your doctor immediately if you experience symptoms of a severe allergic reaction such as:

  • swelling of the face, lips, tongue, or throat;
  • difficulty swallowing;
  • difficulty breathing.

Uncommon(may affect up to 1 in 100 people):

  • -hypercalcemia (elevated blood calcium levels) and
  • -hypercalciuria (elevated urine calcium levels).

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

  • -itching, rash, hives.

Reporting side effects

If you experience any side effects, including those not listed in this leaflet, tell your doctor or pharmacist. Side effects can be reported directly to the Department of Drug Safety, Office for Registration of Medicinal Products, Medical Devices, and Biocidal Products, Al. Jerozolimskie 181C, PL-02-222 Warsaw, Tel.: +48 22 49 21 301, Fax: +48 22 49 21 309, website: https://smz.ezdrowie.gov.pl. Side effects can also be reported to the marketing authorization holder. By reporting side effects, you can help provide more information on the safety of this medicine.

5. How to store Calsus

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 carton and blister after "EXP". The expiry date refers to the last day of that month. Store the medicine below 25°C. Store in the original package to protect from moisture. Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. This will help protect the environment.

6. Contents of the pack and other information

What Calsus contains

The active substance is cholecalciferol (vitamin D). Each soft capsule contains 0.625 mg of cholecalciferol, equivalent to 25,000 IU of vitamin D. The other ingredients are: capsule filling: medium-chain triglycerides, all-rac-α-tocopherol (E 307). Capsule shell: gelatin, glycerol, purified water, titanium dioxide (E 171), and yellow iron oxide (E 172). Also contains traces of medium-chain triglycerides, phosphatidylcholine (from soybean lecithin - see section 2 "Calsus contains soybean lecithin"), caprylic and capric triglycerides, ethanol, sunflower seed oil glycerides, oleic acid, ascorbyl palmitate, and all-rac-α-tocopherol.

What Calsus looks like and contents of the pack

Calsus, 25,000 IU, soft capsules, are yellow, opaque, oval-shaped soft gelatin capsules, approximately 9 mm x 6 mm in size. PVC/PVDC/Aluminum blisters in a cardboard box. Packs of 1, 2, 3, 4, 6, and 12 soft capsules, as well as packs of 3x1, 4x1, 6x1, 12x1 soft capsules. Not all pack sizes may be marketed.

Marketing authorization holder and manufacturer

Marketing authorization holder

Teva B.V., Swensweg 5, 2031 GA Haarlem, The Netherlands

Manufacturer/Importer

TEVA Gyógyszergyár Zrt., Pallagi út 13, 4042 Debrecen, Hungary, Merckle GmbH, Ludwig-Merckle-Strasse 3, 89143 Blaubeuren, Germany. For more information on this medicine, contact the marketing authorization holder: Teva Pharmaceuticals Polska Sp. z o.o., tel. +48 22 345 93 00

Date of last revision of the leaflet: June 2024

5/5

  • Country of registration
  • Active substance
  • Prescription required
    Yes
  • Importer
    Merckle GmbH TEVA Gyógyszergyár Zrt. (TEVA Pharmaceutical Works Private Limited Company)
  • Alternatives to Calsus
    Dosage form: Tablets, 1000 IU
    Active substance: colecalciferol
    Prescription required
    Dosage form: Tablets, 7000 IU
    Active substance: colecalciferol
    Prescription required
    Dosage form: Tablets, 30,000 IU
    Active substance: colecalciferol
    Prescription required

Alternatives to Calsus in other countries

The best alternatives with the same active ingredient and therapeutic effect.

Alternative to Calsus in Spain

Dosage form: CAPSULE, 800 IU
Active substance: colecalciferol
Manufacturer: Nutricion Medica S.L.
Prescription required
Dosage form: CAPSULE, 3,200 IU
Active substance: colecalciferol
Manufacturer: Nutricion Medica S.L.
Prescription required
Dosage form: ORAL SOLUTION/SUSPENSION, 25,000 IU/2.5 ml
Active substance: colecalciferol
Prescription required
Dosage form: ORAL SOLUTION/SUSPENSION DROPS, 10,000 IU/ml
Active substance: colecalciferol
Prescription required
Dosage form: TABLET, 20,000 IU
Active substance: colecalciferol
Prescription required
Dosage form: TABLET, 10,000 IU
Active substance: colecalciferol
Prescription required

Alternative to Calsus in Ukraine

Dosage form: capsules, 4000 IU per 15 capsules
Active substance: colecalciferol
Dosage form: capsules, 2000 IU, 15 capsules in a blister
Active substance: colecalciferol
Dosage form: capsules, 10000 IU per 15 capsules
Active substance: colecalciferol
Dosage form: capsules, 50000 IU; 2 capsules in a blister
Active substance: colecalciferol
Prescription required
Dosage form: drops, 20000 IU/ml
Active substance: colecalciferol
Prescription required
Dosage form: tablets, 500 IU
Active substance: colecalciferol
Prescription not required

Online doctors for Calsus

Discuss dosage, side effects, interactions, contraindications, and prescription renewal for Calsus – subject to medical assessment and local rules.

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Doctor

Maryna Kuznetsova

Cardiology16 years of experience

Dr Marina Kuznetsova is an internal medicine doctor and cardiologist with a PhD in medicine. She provides online consultations for adults with chronic and acute conditions, with a strong focus on cardiovascular health. Her approach is based on current clinical guidelines and evidence-based treatment strategies.

Areas of expertise:

  • dyslipidaemia and lipid metabolism disorders
  • prevention and management of atherosclerosis
  • blood pressure monitoring and antihypertensive therapy
  • arrhythmias: diagnosis, follow-up, and treatment adjustment
  • cardiovascular care and recovery support after Covid-19
Dr Kuznetsova helps patients manage cardiovascular risk factors, optimise long-term treatment, and gain clarity in complex health situations – all through accessible and structured online care.
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5.0(25)
Doctor

Anna Biriukova

General medicine5 years of experience

Dr Anna Biriukova is an internal medicine doctor with clinical experience in cardiology, endocrinology, and gastroenterology. She provides online consultations for adults, offering expert medical support for heart health, hormonal balance, digestive issues, and general internal medicine.

Cardiology – Diagnosis and treatment of:

  • High blood pressure, blood pressure fluctuations, and cardiovascular risk prevention.
  • Chest pain, shortness of breath, arrhythmias (tachycardia, bradycardia, palpitations).
  • Leg swelling, chronic fatigue, reduced exercise tolerance.
  • EKG interpretation, lipid profile evaluation, cardiovascular risk assessment (heart attack, stroke).
  • Post-COVID-19 cardiac monitoring and care.
Endocrinology – Diabetes, thyroid, metabolism:
  • Diagnosis and management of type 1 and type 2 diabetes, and prediabetes.
  • Individual treatment plans including oral medications and insulin therapy.
  • GLP-1 therapy– modern pharmacological treatment for weight management and diabetes control, including drug selection, monitoring, and safety follow-up.
  • Thyroid disorders – hypothyroidism, hyperthyroidism, autoimmune thyroid diseases (Hashimoto’s, Graves’ disease).
  • Metabolic syndrome – obesity, lipid disorders, insulin resistance.
Gastroenterology – Digestive health:
  • Abdominal pain, nausea, heartburn, gastroesophageal reflux (GERD).
  • Stomach and intestinal conditions: gastritis, irritable bowel syndrome (IBS), indigestion.
  • Management of chronic digestive disorders and interpretation of tests (endoscopy, ultrasound, labs).
General internal medicine and preventive care:
  • Respiratory infections – cough, colds, bronchitis.
  • Lab test analysis, therapy adjustments, medication management.
  • Adult vaccinations – planning, contraindications assessment.
  • Cancer prevention – screening strategies and risk assessment.
  • Holistic approach – symptom relief, complication prevention, and quality of life improvement.
Dr Biriukova combines internal medicine with specialist insight, offering clear explanations, personalised treatment plans, and comprehensive care tailored to each patient.
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Liudmyla Boichuk

Family medicine10 years of experience

Dr Liudmyla Boichuk is a family medicine doctor providing diagnosis and treatment for a wide range of acute and chronic conditions in adults and children. She works with respiratory, cardiovascular and digestive system disorders and has extensive experience caring for patients with multiple coexisting conditions, where coordinated, whole-person management is essential.

She treats adults with respiratory illnesses such as pneumonia, COPD and bronchial asthma, as well as cardiovascular conditions including hypertension and ischaemic heart disease. Her practice also covers gastrointestinal complaints and chronic comorbidities that require careful, structured medical supervision.

Dr Boichuk provides care for children from birth, including acute respiratory viral infections, infectious diseases, pneumonia, bronchitis, bronchial obstruction syndromes and allergic reactions. She offers clear, evidence-based guidance to parents and ensures safe follow-up throughout the child’s recovery.

Her work also includes developing personalised immunisation plans and supporting families with long-term preventive care.

Known for her structured clinical approach and clear communication, Dr Liudmyla Boichuk offers patients of all ages comprehensive, reliable and evidence-based medical care.

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Svetlana Kolomeeva

Cardiology17 years of experience

Dr. Svetlana Kolomeeva is a general practitioner and internal medicine doctor providing online consultations for adults. She helps patients manage acute symptoms, chronic conditions, and preventive care. Her clinical focus includes cardiovascular health, hypertension control, and managing symptoms like fatigue, weakness, sleep issues, and overall low energy.

Patients commonly seek her help for:

  • High blood pressure, headaches, dizziness, swelling, palpitations.
  • Diagnosis and management of hypertension, arrhythmias, and tachycardia.
  • Metabolic syndrome, excess weight, high cholesterol.
  • Chronic fatigue, insomnia, poor concentration, anxiety.
  • Respiratory symptoms: colds, flu, sore throat, cough, fever.
  • Digestive issues: heartburn, bloating, constipation, IBS symptoms.
  • Chronic conditions: diabetes, thyroid disorders.
  • Interpretation of lab tests and medical reports, therapy adjustment.
  • Second opinion and decision-making support.
  • Cardiovascular disease prevention and metabolic risk reduction.
  • Long-term follow-up and dynamic health monitoring.

Dr Kolomeeva combines clinical expertise with personalised care. She clearly explains diagnoses, guides patients through symptoms and treatment options, and provides actionable plans. Her consultations are designed not only to address current complaints but also to stabilise chronic conditions and prevent future complications. She supports patients through every stage of care – from first symptoms to ongoing health management.

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Mar Tabeshadze

Endocrinology10 years of experience

Dr. Mar Tabeshadze is a licensed endocrinologist and general practitioner in Spain. She provides online consultations for adults, offering medical support for a wide range of endocrine conditions and related health concerns.

  • Diagnostic consultations for suspected endocrine disorders
  • Management of thyroid conditions, including in pregnant women
  • Early detection and treatment of type 1 and type 2 diabetes, with personalised therapy plans
  • Obesity treatment: identifying underlying causes of weight gain, combining medication and non-pharmacological strategies, and long-term support
  • Diagnosis and treatment of endocrine-related skin, hair, and nail issues
  • Ongoing care for patients with osteoporosis, pituitary, and adrenal gland disorders
Dr. Tabeshadze takes a patient-centred approach based on evidence-based medicine. Her goal is to help patients achieve hormonal balance, manage chronic conditions effectively, and improve overall well-being through targeted, personalised care.
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Doctor

Lina Travkina

Family medicine12 years of experience

Dr. Lina Travkina is a licensed family and preventive medicine doctor based in Italy. She provides online consultations for adults and children, supporting patients across all stages of care – from acute symptom management to long-term health monitoring and prevention.

Areas of medical care include:

  • Respiratory conditions: colds, flu, acute and chronic bronchitis, mild to moderate pneumonia, bronchial asthma.
  • ENT and eye conditions: sinusitis, tonsillitis, pharyngitis, otitis, infectious and allergic conjunctivitis.
  • Digestive issues: gastritis, acid reflux (GERD), IBS, dyspepsia, bloating, constipation, diarrhoea, functional bowel symptoms, intestinal infections.
  • Urological and infectious diseases: acute and recurrent cystitis, bladder and kidney infections, prevention of recurrent UTIs, asymptomatic bacteriuria.
  • Chronic conditions: hypertension, diabetes, hypercholesterolemia, metabolic syndrome, thyroid disorders, excess weight.
  • Neurological and general symptoms: headache, migraine, dizziness, fatigue, sleep disturbances, reduced concentration, anxiety, asthenia.
  • Chronic pain support: back, neck, joint, and muscle pain, tension syndromes, pain associated with osteochondrosis and chronic conditions.

Additional care areas:

  • Preventive consultations and check-up planning.
  • Medical advice and follow-up consultations.
  • Test interpretation and diagnostic guidance.
  • Structured support for undiagnosed complaints.
  • Second opinion on diagnoses and treatment plans.
  • Nutritional and lifestyle support for vitamin deficiencies, anaemia, metabolic issues.
  • Post-operative recovery support and pain management.
  • Preconception counselling and postpartum support.
  • Immunity support and strategies to reduce frequency of infections.

Dr. Travkina combines evidence-based medicine with an attentive, personalised approach. Her consultations focus not only on treatment, but also on prevention, recovery, and long-term wellbeing.

If during the consultation it becomes clear that your case requires in-person assessment or specialised care outside of her scope, the session will be terminated and the payment fully refunded.

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Alexandra Alexandrova

General medicine8 years of experience

Dr Alexandra Alexandrova is a licensed general medicine doctor in Spain, specialising in trichology, nutrition, and aesthetic medicine. She offers online consultations for adults, combining a therapeutic approach with personalised care for hair, scalp, and overall health.

Areas of expertise:

  • Hair loss in women and men, postpartum hair loss, androgenetic and telogen effluvium.
  • Scalp conditions: seborrheic dermatitis, psoriasis, scalp irritation, dandruff.
  • Chronic conditions: hypertension, diabetes, metabolic disorders.
  • Online trichology consultation: customised treatment plans, nutritional support, hair growth stimulation.
  • Hair loss prevention: hormonal imbalance, stress factors, haircare strategies.
  • Routine health check-ups, prevention of cardiovascular and metabolic diseases.
  • Personalised nutritional advice to improve hair strength, skin health, and hormonal balance.
  • Aesthetic medicine: non-invasive strategies to enhance skin quality, tone, and metabolic wellness.

Dr Alexandrova follows an evidence-based and holistic approach: online consultations with a therapist and trichologist on Oladoctor provide professional support for hair, scalp, and overall health — all from the comfort of your home.

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