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SEIDIGESTAN 100 mg soft capsules

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About the medicine

How to use SEIDIGESTAN 100 mg soft 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

SEIDIGESTAN 100 mg Soft Capsules

Progesterone

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 or pharmacist.
  • This medicine has been prescribed for you only. Do not pass it on to others, as it may harm them, even if their symptoms are the same as yours.
  • If you experience any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet.

Contents of the Package Leaflet:

  1. What Seidigestan 100 mg is and what it is used for
  2. What you need to know before you take Seidigestan 100 mg
  3. How to take Seidigestan 100 mg
  4. Possible side effects
  5. Storage of Seidigestan 100 mg
  6. Contents of the pack and further information

1. What Seidigestan 100 mg is and what it is used for

Seidigestan belongs to the group of medicines called progestogens and contains natural progesterone.

Seidigestan is used for disorders related to a progesterone deficiency, also in hormone replacement therapy for menopause, to resolve some fertility problems, and for the prevention of certain types of preterm labor and abortion.

Doctor consultation

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2. What you need to know before you take Seidigestan 100 mg

Do not takeSeidigestan

  • If you are allergic to progesterone or any of the other ingredients of Seidigestan listed in section 6.
  • This medicine contains soy lecithin. It should not be used in case of peanut or soy allergy.
  • If you have undiagnosed vaginal bleeding.
  • If you have a history of thromboembolic disorders.
  • If you have severe liver disorders.

Warnings and precautions

  • In case of drowsiness, it is recommended to take the capsules preferably at night before bedtime.
  • Treatment in the described conditions of use does not have a contraceptive effect.

Using Seidigestan with other medicines:

Tell your doctor or pharmacist if you are using or have recently used or might use any other medicines, including those obtained without a prescription.

Taking Seidigestan with food and drinks:

The ingestion of food after taking the capsules increases their absorption, so it is recommended to take the capsules at the same time, outside of meals, avoiding variations in intake from one day to another.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you might be pregnant, or plan to become pregnant, consult your doctor or pharmacist before using this medicine.

Progesterone is the hormone that increases during pregnancy, so its administration during this period does not produce adverse effects.

Progesterone is eliminated in breast milk, so its administration during the breastfeeding period is not advisable.

Driving and using machines:

Given that there is a risk of drowsiness and/or vertigo sensations related to the use of progesterone orally, during treatment, activities that require a special state of alertness, such as driving vehicles or handling dangerous machinery, should not be performed.

3. How to take Seidigestan 100 mg

Follow exactly the administration instructions of Seidigestan 100 mg as indicated by your doctor. Consult your doctor or pharmacist if you have doubts. Remember to take your medicine.

Your doctor will indicate the duration of your treatment with Seidigestan. Do not stop the treatment before the indicated time.

The dose to be administered should be established according to the hormonal plasma levels of each patient and will vary according to the indications.

The recommended dose is:

Orally:

Take the capsules with the help of a glass of water outside of meals.

The average recommended dose is 200 to 300 mg per day (i.e., 200 mg at night before bedtime or 100 mg in the morning and 200 mg at night before bedtime).

Vaginally:

Insert the capsules into the vagina deeply, pushing them with your finger.

The dose can range from 200 mg to 600 mg per day.

If you take more Seidigestan than you should

Consult your doctor or pharmacist immediately or go to the nearest hospital. In case of overdose or massive ingestion, various effects such as menstrual disorders, including amenorrhea (disappearance of menstruation), and also sedation (drowsiness) and liver alterations may occur.

In case of overdose or accidental ingestion, consult your doctor or pharmacist immediately or call the Toxicological Information Service, phone (91) 562 04 20, indicating the medicine and the amount ingested.

If you forget to take Seidigestan

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

Medicine questions

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4. Possible side effects

Like all medicines, Seidigestan can cause side effects, although not everybody gets them. The most common adverse reactions are:

Orally:

  • Drowsiness (tendency to sleep) and/or fleeting vertigo sensations. They appear 1 to 3 hours after ingestion of the product.
  • Shortening of the menstrual cycle or intercurrent bleeding.
  • Amenorrhea (disappearance of menstruation).

If you think any of the side effects you are experiencing is serious or if you notice any side effects not mentioned in this leaflet, tell your doctor or pharmacist.

5. Storage of Seidigestan 100 mg

No special storage conditions are required.

Keep out of the sight and reach of children.

Do not use Seidigestan after the expiry date stated on the carton after CAD. The expiry date is the last day of the month indicated.

Medicines should not be disposed of via wastewater or household waste. Place the packaging and any unused medicines in the SIGRE collection point at your pharmacy. If you are unsure, ask your pharmacist how to dispose of the packaging and any unused medicines. This will help protect the environment.

6. Contents of the pack and further information

Composition of Seidigestan 100 mg capsules

  • The active ingredient is micronized progesterone. One capsule contains 100 mg of progesterone.
  • The other ingredients are sunflower oil, soy lecithin, gelatin, glycerol (E 422), titanium dioxide (E 171), and purified water.

Appearance of the product and contents of the pack

Spherical soft gelatin capsules. They are presented in boxes containing 30 capsules (2 blisters) or 60 capsules (4 blisters).

Marketing authorization holder and manufacturer

SEID, S.A.

Carretera de Sabadell a Granollers, Km. 15

08185 - Lliçà de Vall (Barcelona)

Date of last revision of this leaflet: October 2022

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 SEIDIGESTAN 100 mg soft capsules

Discuss questions about SEIDIGESTAN 100 mg soft capsules, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

5.0 (3)
Doctor

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.

Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults.

In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions.

Patients commonly seek his care for:

  • seasonal and perennial allergies
  • allergic rhinitis and chronic nasal symptoms
  • asthma and breathing difficulties
  • food and medication allergies
  • urticaria, atopic dermatitis and skin reactions
  • recurrent infections in children
  • sports-related health questions
  • general family medicine concerns
Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.
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5.0 (29)
Doctor

Anna Biriukova

General medicine 6 years exp.

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.
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  • 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.
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Gastroenterology – Digestive health:
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  • 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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€60
5.0 (29)
Doctor

Dmytro Horobets

Family medicine 7 years exp.

Dr. Dmytro Horobets is a licensed family medicine physician in Poland, specialising in endocrinology, diabetology, obesity management, gastroenterology, pediatrics, general surgery, and pain medicine. He offers online consultations for adults and children, providing personalised medical support for a wide range of acute and chronic health concerns.

Areas of expertise:

  • Endocrinology: diabetes type 1 and type 2, prediabetes, thyroid disorders, metabolic syndrome, hormonal imbalance.
  • Obesity medicine: structured weight management plans, nutritional counselling, obesity-related health risks.
  • Gastroenterology: acid reflux (GERD), gastritis, irritable bowel syndrome (IBS), liver and biliary conditions.
  • Pediatric care: infections, respiratory symptoms, digestive issues, growth and development monitoring.
  • General surgery support: pre- and post-surgical consultations, wound care, rehabilitation.
  • Pain management: chronic and acute pain, back pain, joint pain, post-traumatic pain syndromes.
  • Cardiovascular health: hypertension, cholesterol control, risk assessment for heart disease.
  • Preventive medicine: regular check-ups, health screenings, long-term management of chronic conditions.

Dr. Horobets combines evidence-based medicine with a patient-centred approach. He carefully evaluates each patient’s medical history and symptoms, offering clear explanations and structured treatment plans adapted to individual needs.

Whether you need help managing diabetes, tackling weight-related health issues, interpreting lab results, or receiving general family medicine support, Dr. Horobets provides professional online care tailored to your specific health goals.

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€60

Frequently Asked Questions

Is a prescription required for SEIDIGESTAN 100 mg soft capsules?
SEIDIGESTAN 100 mg soft 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 SEIDIGESTAN 100 mg soft capsules?
The active ingredient in SEIDIGESTAN 100 mg soft capsules is progesterone. This information helps identify medicines with the same composition but different brand names.
How much does SEIDIGESTAN 100 mg soft capsules cost in pharmacies?
The average pharmacy price for SEIDIGESTAN 100 mg soft capsules is around 5.81 EUR. Prices may vary depending on the manufacturer and dosage form.
Who manufactures SEIDIGESTAN 100 mg soft capsules?
SEIDIGESTAN 100 mg soft capsules is manufactured by Seid S.A.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of SEIDIGESTAN 100 mg soft 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 SEIDIGESTAN 100 mg soft 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 SEIDIGESTAN 100 mg soft capsules?
Other medicines with the same active substance (progesterone) include CYCLOGEST 400 mg VAGINAL SUPPOSITORIES, DARSTIN 10 mg/g GEL, GEPRETIX 100 mg SOFT GEL 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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