Tabletas de potasio
Sando-K
Revisado por pares por Sid DajaniÚltima actualización por Michael Stewart, MRPharmSÚltima actualización 13 Feb 2025
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Take each of your doses with a snack or after a meal.
Do not use salt substitutes while you are taking potassium.
De un vistazo
Potassium is an electrolyte that may be prescribed if you have low levels in your blood.
Low potassium can result from some medicines, sickness, diarrhoea, or excessive sweating.
Take potassium after a meal or snack to help prevent stomach upset.
You will have regular blood tests to check your potassium levels.
Do not use salt substitutes as they contain high amounts of potassium.
About potassium
Tipo de medicamento | A salt (an electrolyte) |
Usado para | To replace potassium when there are low levels of potassium in your blood |
También llamado | Sando-K®, Aace K®, Aad K®, PotaChlor® |
Disponible como | Oral liquid medicine, modified-release tablets and effervescent tablets |
Having just the right amount of potassium in our bodies is essential for health. For most people, a normal healthy diet containing a variety of fruit, vegetables and other fresh foods provides a good quantity of potassium.
If you have a low level of potassium in your blood, it is known as hypokalaemia. It can occur as a side-effect of medication, especially if you take 'water' tablets (diuretics). It can also occur if you lose a lot of fluid in diarrhoea and through being sick (vomiting), or if you sweat excessively.
If any of the above apply to you, your doctor will assess the amount of potassium in your blood and will prescribe a potassium supplement to replace any low levels of potassium if needed.
Before taking potassium tablets or liquid medicine
Some medicines are not suitable for people with certain conditions, and sometimes a medicine can only be used if extra care is taken. For these reasons, before you start taking potassium it is important that your doctor knows:
Si tienes algún problema con el funcionamiento de tus riñones.
Si tienes una afección cardíaca.
Si está tomando otros medicamentos. Esto incluye cualquier medicamento que esté tomando y que esté disponible para comprar sin receta, así como medicamentos herbales y complementarios.
Si alguna vez has tenido una reacción alérgica a un medicamento.
How to take potassium
Before you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about potassium, and will also provide you with a full list of the side-effects which you could experience from taking it.
Take the tablets or liquid medicine exactly as your doctor tells you to. How much you will need to take will depend upon the level of potassium in your blood, so your doctor will say what dose is right for you. Your dose will be on the label of the pack to remind you about what was said to you.
Take your doses with a snack or just after a meal. This will help to prevent any stomach upset.
If you have been given Sando-K® tablets, these are effervescent and should be taken dissolved or mixed into water. Add the tablet to half a glassful of water and allow it to dissolve before you swallow the liquid.
Try to take your doses at the same times of day each day as this will help you to remember to take them regularly. If you do forget to take a dose, take it as soon as you remember (unless it is nearly time for your next dose, in which case leave out the missed dose and take the next dose as normal). Do not take two doses together to make up for a forgotten dose.
Obteniendo el máximo de tu tratamiento
Try to keep your regular appointments with your doctor. This is so your doctor can check on your progress. Your doctor will want to do some tests from time to time to check the levels of potassium in your blood.
Do not use salt substitutes. A number are available as health food products but as they contain high amounts of potassium, they are not suitable for you to use.
Potassium is present in many different foods, particularly in fruit and vegetables. Making sure that you have at least five portions of fruit and vegetables a day is an important part of eating a healthy diet.
Can taking potassium cause problems?
Along with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the most common ones associated with potassium. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.
Common side-effects from taking potassium | ¿Qué puedo hacer si experimento esto? |
Tummy (abdominal) discomfort, diarrhoea, feeling sick (nausea) or being sick (vomiting) | Stick to simple foods - avoid rich or spicy meals. If you are not already doing so, remember to take your doses after a meal or a snack |
If you experience any other symptoms which you think may be due to potassium, speak with your doctor or pharmacist for further advice.
How to store potassium tablets and liquid medicine
Mantenga todos los medicamentos fuera del alcance y la vista de los niños.
Almacenar en un lugar fresco y seco, lejos del calor y la luz directos.
Información importante sobre todos los medicamentos
Información importante sobre todos los medicamentos
Nunca tome más de la dosis prescrita. Si sospecha que usted u otra persona podría haber tomado una sobredosis de este medicamento, acuda de inmediato al departamento de accidentes y emergencias de su hospital local. Lleve el envase con usted, incluso si está vacío.
Si vas a someterte a una operación o a un tratamiento dental, informa a la persona que realiza el tratamiento sobre los medicamentos que estás tomando.
If you buy any medicines, check with a pharmacist that they are suitable to take with your prescribed medicines.
Este medicamento es para ti. Nunca lo des a otras personas, incluso si su condición parece ser la misma que la tuya.
No guardes medicamentos caducados o no deseados. Llévalos a tu farmacia local, que se encargará de desecharlos por ti.
Si tienes alguna pregunta sobre este medicamento, consulta a tu farmacéutico.
Informar efectos secundarios de un medicamento o vacuna
Si experimenta efectos secundarios, puede reportarlos en línea a través de Sitio web de Yellow Card.

¿Inseguro sobre mezclar medicamentos?
Verifica posibles interacciones entre medicamentos, suplementos y alimentos antes de tomarlos juntos.
Preguntas frecuentes
Can I use salt substitutes if I am taking potassium supplements?
No, you should not use salt substitutes. Many of these products contain high amounts of potassium and are not suitable for you to use while taking prescribed potassium.
What should I do if I forget to take a dose of potassium?
If you forget a dose, take it as soon as you remember. However, if it's almost time for your next scheduled dose, skip the missed one and take your next dose as usual. Do not take two doses at once to compensate for a forgotten dose.
How should I store my potassium tablets or liquid medicine?
Keep all potassium medicines out of the reach and sight of children. Store them in a cool, dry place, away from direct heat and light.
What should I do if I accidentally take too much potassium?
If you suspect that you or someone else has taken an overdose of potassium, you should go to the accident and emergency department of your local hospital immediately. Remember to take the medicine container with you, even if it's empty.
Can I give my potassium medicine to someone else?
No, this medicine is specifically prescribed for you. You should never give it to other people, even if their symptoms or condition seems similar to yours.
Lecturas adicionales y referencias
- Manufacturer's PIL, Sando-K® Effervescent Tablets; Alturix Limited, The electronic Medicines Compendium. Dated September 2024.
- Medicamentos Completos BNF 89ª Edición; Asociación Médica Británica y Sociedad Real de Farmacia de Gran Bretaña, Londres.
Sobre el autorVer biografía completa

Michael Stewart, MRPharmS
Gerente de Revisión de Folletos de Medicamentos – Contratista, Farmacéutico
BPharm (Hons), MRPharmS
Michael es un farmacéutico comunitario que ejerce en Midlands y South Yorkshire con más de 20 años de experiencia asesorando sobre medicamentos y condiciones médicas. Tiene una sólida formación en capacitación en atención médica, habiendo producido e impartido cursos de formación para equipos de farmacia y personal de entornos de atención residencial, incluidas enfermeras. También ha contribuido a juntas asesoras de farmacia para la gestión de condiciones de baja gravedad en la comunidad.
Acerca del revisor

Sid Dajani
Sultan Dajani se graduó en la Escuela de Farmacia de Londres en 1994 y se convirtió en el miembro más joven elegido para el consejo de la Sociedad Real de Farmacia desde su fundación en 1842.
Historial del artículo
La información en esta página está escrita y revisada por pares por clínicos calificados.
Artículo también disponible en Inglés, Alemán, Español, Francés, Italiano, Portugués, Hindi, Hebreo, Árabe, y Sueco.
Next review due: 13 Feb 2028
13 Feb 2025 | Última versión

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