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BOI-K EFFERVESCENT TABLETS

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About the medicine

How to use BOI-K EFFERVESCENT TABLETS

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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

Prospectus: INFORMATION FOR THE USER

Boi-keffervescent tablets

Potassium hydrogen carbonate / Ascorbic acid

Read the entire prospectus carefully before starting to take the medicine.

  • Keep this prospectus, as you may need to read it again.
  • If you have any doubts, consult your doctor or pharmacist.
  • This medicine has been prescribed to you and should not be given to others, even if they have the same symptoms, as it may harm them.
  • If you consider that any of the adverse effects you suffer is serious or if you notice any adverse effect not mentioned in this prospectus, inform your doctor or pharmacist.

Contents of the prospectus:

  1. What Boi-keffervescent tabletsare and what they are used for
  2. Before taking Boi-keffervescent tablets
  3. How to take Boi-keffervescent tablets
  4. Possible side effects
  5. Storage of Boi-keffervescent tablets
  6. Additional information

1. What BOI-K effervescent tablets are and what they are used for

Boi-k belongs to a group of medicines called "mineral supplements".

BOI-K is used in the following situations:

Treatment and prophylaxis of hypokalemia (potassium deficiency) in situations such as:

  • Potassium losses caused by treatment with diuretics (medicines to increase urine elimination), corticosteroids, and derivatives (medicines to reduce inflammation).
  • Potassium losses caused by vomiting, diarrhea, kidney problems, hyperaldosteronism (excessive production of the hormone aldosterone), and intense sweating (due to climate or physical exercise).
  • Situations where there is a deficit in potassium intake, such as malnutrition or deficient diets.

Treatment of digitalis intoxication (medicines for the heart)

Situations where an additional intake of vitamin C is necessary.

Doctor consultation

Not sure if this medicine is right for you?

Discuss your symptoms and treatment with a doctor online.

2. Before taking BOI-K effervescent tablets

Do not take BOI-Keffervescent tablets:

  • If you are allergic (hypersensitive) to potassium hydrogen carbonate, ascorbic acid, or any other component of BOI-K.
  • If you have high potassium levels in the blood (hyperkalemia).
  • If you have any of the following gastrointestinal diseases (stomach and intestine): intestinal obstruction, digestive tract stenosis, paralytic ileus, or any other process that hinders or prevents passage through the stomach or intestine.
  • If you have peptic ulcers or digestive bleeding, as excess potassium can cause gastrointestinal perforation.
  • If you have severe kidney failure, as potassium can accumulate in the kidneys.
  • If you have any disease that reduces urine production.
  • If you have Addison's disease (a disease where the production of hormones such as cortisol and aldosterone decreases).

Be careful withBoi-keffervescent tablets:

  • If you have had kidney stones or gout.
  • During treatment, your doctor should monitor your potassium levels in the blood, especially in the case of the elderly, patients with heart disease, or kidney failure.
  • If you are being treated with amiloride, triamterene, or spironolactone, which are types of diuretics, hyperkalemia (high potassium levels in the blood) may occur.
  • If you are being treated with digitalis (medicines for heart problems), BOI-K may increase the toxicity of digitalis.
  • If you have had peptic ulcers, as oral potassium administration (a component of BOI-K) can cause irritation to the gastrointestinal mucosa.

If you take more than 1 g of vitamin C (ascorbic acid) per day, you may experience diarrhea, kidney stones, and abdominal cramps. There is also a risk of forming stones and precipitating acute gout attacks in individuals who are prone to them.

During treatment, your doctor will assess whether you need to undergo periodic electrocardiogram checks, as if there are any alterations, potassium administration should be suspended.

Use in elderly people

Your doctor should monitor your potassium levels in the blood to rule out kidney failure.

In any of these situations, inform your doctor before taking BOI-K.

Use of other medicines:

Tell your doctor or pharmacist if you are using or have recently used any other medicine, including those purchased without a prescription, homeopathic medicines, herbal remedies, and other health-related products, as it may be necessary to interrupt treatment or adjust the dose.

Consult your doctor if you take Boi-k with any of the following medicines:

  • Amiloride, triamterene, or spironolactone (diuretics), ACE inhibitors (medicines for high blood pressure), angiotensin II receptor antagonists (medicines for high blood pressure), NSAIDs (non-steroidal anti-inflammatory medicines), beta-blockers (medicines for heart rhythm disorders and high blood pressure), cyclosporine (a medicine used in transplants), heparin (to prevent blood clotting). These medicines may favor potassium accumulation and lead to hyperkalemia (high potassium levels in the blood).
  • Laxatives, corticosteroids, amphotericin B (an antifungal antibiotic), aminoglycosides (gentamicin), penicillins (penicillin, carbenicillin, mezlocillin, piperacillin, ticarcillin), or polymyxin B. These medicines may lead to increased potassium elimination, potentially causing hypokalemia (low potassium levels in the blood).
  • Digitalis (medicines for heart problems), BOI-K may increase their toxicity.
  • Parenteral calcium salts, as cardiac rhythm disorders may occur.
  • Insulin or bicarbonate, as they may cause hypokalemia (low potassium levels in the blood).
  • Vitamin C (ascorbic acid) at high doses may alter the action of the following medicines: antidepressants, anticoagulants, high doses of salicylates, sulfonamides, trimethoprim/sulfamethoxazole, or hormonal contraceptives.

Never take another medicine on your own initiative without your doctor's recommendation, as some combinations should be avoided, and in other cases, it may be necessary to adjust the treatment dose.

Interference with diagnostic tests

If you are going to undergo any diagnostic test (blood test, urine test, etc., including tests with reactive strips), inform your doctor that you are being treated with Boi-k, as it may alter the results.

Pregnancy and breastfeeding:

Consult your doctor or pharmacist before using any medicine.

Tell your doctor if you are pregnant, trying to become pregnant, or are breastfeeding.

Pregnancy

BOI-K is not expected to cause adverse reactions in the mother or fetus, provided that the recommended daily intake of potassium and vitamin C is not exceeded.

High doses of potassium or vitamin C are not recommended during pregnancy unless strictly necessary.

Breastfeeding

The effect of high doses of potassium is unknown, so its administration at high doses is not recommended unless strictly necessary.

Driving and using machines

BOI-K does not affect the ability to drive or operate machinery.

Important information about some of the components of BOI-K

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

3. How to take BOI-K effervescent tablets

Follow your doctor's instructions for taking BOI-K exactly. Consult your doctor or pharmacist if you have any doubts.

BOI-K is administered orally.

The normal dose is:

Adults:

2 to 6 tablets per day.

Patient with kidney failure:

A dose adjustment may be necessary based on the degree of kidney failure.

Guidelines for correct administration:

It is recommended to take the dose in 2 or 3 divided doses, coinciding with meals or after them, to reduce stomach damage.

The effervescent tablet should be dissolved in a little water and taken alone or mixed with fruit juices, broth, etc., preferably during meals or after them.

If you take moreBoi-keffervescent tablets than you should:

If you have taken more BOI-K than you should, consult your doctor or pharmacist immediately or contact the Toxicology Information Service (Telephone: 91 562 04 20), and take the package with the remaining medicine, so the doctor knows what you have taken.

Among the symptoms of potassium salt overdose are: abdominal pain, nausea and vomiting, diarrhea and ulcers, chest tightness, hyperkalemia (excess potassium in the blood), difficulty breathing, and heart failure.

Treatment in patients with an overdose of an oral potassium supplement is usually symptomatic and may be limited to temporary suspension of treatment.

If you forget to takeBoi-keffervescent tablets:

If you forget to take a dose, take it as soon as you remember, unless it is almost time to take the next dose. Do not take a double dose to make up for forgotten doses.

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

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible side effects

Like all medicines, BOI-K can cause side effects, although not everyone gets them.

If you consider that any of the side effects you suffer is serious or if you notice any side effect not mentioned in this prospectus, inform your doctor or pharmacist.

The frequency terminology used below is based on the following definitions: Very common (?1/10), common (?1/100, <1>

The side effects of potassium hydrogen carbonate are generally mild and transient. The side effects are:

  • Very common: nausea, vomiting, diarrhea, flatulence (excess gas), abdominal pain, and gastric hyperacidity.
  • Common: presence of peptic ulcers, digestive bleeding, intestinal obstruction, or intestinal perforation.
  • Rare: exanthematic eruptions (skin irritation) may appear.
  • Frequency not known: severe hyperkalemia (excess potassium in the blood) may occur.

If you take more than 1 g of vitamin C (ascorbic acid) per day, you may experience diarrhea, kidney stones, and abdominal cramps. There is also a risk of forming stones and precipitating acute gout attacks in individuals who are prone to them.

If you consider that any of the side effects you suffer is serious or if you notice any side effect not mentioned in this prospectus, inform your doctor or pharmacist.

5. Storage of BOI-K effervescent tablets

Keep Boi-k out of the reach and sight of children.

Expiry date

Do not use Boi-k after the expiry date stated on the package after CAD. The expiry date is the last day of the month indicated.

No special storage conditions are required.

Medicines should not be disposed of via wastewater or household waste. Deposit the packages and medicines you no longer need at the SIGRE collection point in your pharmacy. If in doubt, ask your pharmacist how to dispose of packages and medicines you no longer need. This will help protect the environment.

6. Additional information

Composition ofBoi-keffervescent tablets

The active ingredients are potassium hydrogen carbonate and ascorbic acid. Each BOI-K effervescent tablet contains 1.001 mg of potassium hydrogen carbonate and 250 mg of ascorbic acid.

The other ingredients are: anhydrous citric acid, sodium benzoate (E-211), macrogol 6000, sodium saccharin, sucrose, lemon flavor, lactose monohydrate.

Appearance of the product and package contents

Boi-k effervescent tablets are presented in the form of white, circular, flat-surfaced effervescent tablets with a lemon odor.

Boi-k effervescent tablets are presented in packages containing 20 or 50 tablets.

If the tablets appear yellowish, this does not mean a loss of their therapeutic potassium activity.

Marketing authorization holder and manufacturer

Marketing authorization holder

IONFARMA, S.L.U.

Perú, 228

08020 Barcelona, Spain.

Manufacturer

Laboratorios ERN, S.A.

Gorgs Lladó, 188

08210 Barberá del Vallés – Barcelona

Spain

This prospectus was approved in April 2012

Detailed and updated information about 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 BOI-K EFFERVESCENT TABLETS

Discuss questions about BOI-K EFFERVESCENT TABLETS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

5.0 (69)
Doctor

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.

Main areas of consultation:

  • Diagnosis and treatment of acute and chronic conditions (high blood pressure, diabetes, respiratory infections, cardiovascular symptoms)
  • Evaluation of symptoms and guidance on further diagnostic testing
  • Preventive check-ups and regular health monitoring
  • Medical support during travel or after relocation
  • Treatment adjustments and lifestyle recommendations based on your personal history
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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5.0 (63)
Doctor

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.

  • Emergency care: infections, fever, chest/abdominal pain, minor injuries, paediatric emergencies
  • Family medicine: hypertension, diabetes, cholesterol, chronic disease management
  • Travel medicine: pre-travel advice, vaccinations, fit-to-fly certificates, travel-related illnesses
  • Sexual and reproductive health: PrEP, STD prevention, counselling, treatment
  • Weight management and wellness: personalised weight loss programmes, lifestyle guidance
  • Skin and ENT issues: acne, eczema, allergies, rashes, sore throat, sinusitis
  • Pain management: acute and chronic pain, post-surgical care
  • Public health: prevention, health screenings, long-term monitoring
  • Sick leave (Baixa médica) connected to Segurança Social in Portugal
  • IMT medical certificates for driving licence exchange
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.

Dr. Lopes also provides interpretation of medical tests, follow-up care for complex patients, and multilingual support. Whether for urgent concerns or long-term care, he helps patients act with clarity and confidence.

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€59
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Doctor

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
  • gastrointestinal complaints (nausea, diarrhoea, abdominal pain, gastroenteritis)
  • sudden changes in how a child or adult feels
  • questions about existing treatment and whether adjustments are needed
  • renewal of prescriptions when clinically appropriate
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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€50
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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€80

Frequently Asked Questions

Is a prescription required for BOI-K EFFERVESCENT TABLETS?
BOI-K EFFERVESCENT TABLETS 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 BOI-K EFFERVESCENT TABLETS?
The active ingredient in BOI-K EFFERVESCENT TABLETS is potassium hydrogencarbonate. This information helps identify medicines with the same composition but different brand names.
How much does BOI-K EFFERVESCENT TABLETS cost in pharmacies?
The average pharmacy price for BOI-K EFFERVESCENT TABLETS is around 3.72 EUR. Prices may vary depending on the manufacturer and dosage form.
Who manufactures BOI-K EFFERVESCENT TABLETS?
BOI-K EFFERVESCENT TABLETS is manufactured by Ionfarma S.L.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of BOI-K EFFERVESCENT TABLETS 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 BOI-K EFFERVESCENT TABLETS 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 BOI-K EFFERVESCENT TABLETS?
Other medicines with the same active substance (potassium hydrogencarbonate) include BOI-K ASPARTIC ACID EFFERVESCENT TABLETS, POTASION 600 mg HARD CAPSULES, SIBNAYAL 24 mEq PROLONGED-RELEASE GRANULES. 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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