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Codeina – Adicciones
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Codeina


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Descripción breve

La codeína es un narcótico con potencia analgésica moderada y acción antitusígena, extraído de la Papaver Somniferum (adormidera). Actúa uniéndose a receptores opioides cerebrales y medulares, lo que modifica la percepción y la experiencia subjetiva del dolor, reduciendo significativamente su intensidad al imitar los efectos de las endorfinas (moléculas que intervienen en la transmisión del dolor) (Clínica Universidad de Navarra, s.f.). Su uso abarca el tratamiento de dolores leves – moderados como los derivados de lesiones, situaciones postquirúrgicas o condiciones de dolor crónico -, la supresión de la tos irritativa, el control de diarreas refractarias y casos de síndrome de piernas inquietas resistentes a terapias convencionales.

Sin embargo, la codeína posee un potencial adictivo intrínseco. La interacción de factores biopsicosociales puede generar dependencia con la sustancia, activando directamente el sistema de recompensa cerebral, lo que refuerza el consumo repetido y, en casos descontrolados, desencadena un trastorno por consumo de opioides (APA, 2022).   

Datos en España

En España, la codeína es un medicamento sujeto a prescripción médica, aunque se han detectado casos de un uso recreativo ilegal (Madurga, 2024). Se receta en dosis adaptadas a la edad y la indicación terapéutica, leve a moderado, control de la tos u otras.

El Ministerio de Sanidad financia parcialmente medicamentos con codeína a través del Sistema Nacional de Salud en casos específicos (Ministerio de Sanidad, s.f.).

La Agencia Española de Medicamentos y Productos Sanitarios (AEMPS, 2015) establece recomendaciones para limitar su uso en población pediátrica con tos, debido a su potencial adictivo. Su uso está contraindicado  en menores de 12 años y desaconsejado en adolescentes de 12 a 18 años (Medicover Hospitals, s.f.).

Según la Encuesta sobre Alcohol y otras Drogas en España, la codeína y el tramadol son los analgésicos opioides más consumidos nacionalmente. Del 15.2% de la población española de entre 15 a 64 años que reconoce haber consumido opioides con o sin receta, el 56% corresponde a codeína, con mayor prevalencia en mujeres que en hombres (EDADES, 2024).

Efectos a corto y a largo plazo

Los efectos inmediatos del abuso de codeína resultan de la alteración del equilibrio del Sistema Nervioso Central (AEMPS, s.f.). A corto plazo se observan consecuencias psiquiátricas (cambios en el estado de ánimo), nerviosas (somnolencia, cefaleas, reducción de la percepción del dolor), cardiacas (palpitaciones, taquicardia o bradicardia), vasculares (hipotensión), respiratorias (depresión respiratoria), gastrointestinales (náuseas, vómitos, sequedad bucal, estreñimiento o pancreatitis), cutáneas (prurito), auditivas (vértigo) y renales/urinarias (retenciones urinarias). En caso de sobredosis, especialmente con escasa tolerancia previa, los efectos pueden ser irreversibles (AEMPS, s.f.; National Health Service, s.f.).

A largo plazo el consumo prolongado genera tolerancia, adicción e hiperalgesia (aumento paradójico de la sensibilidad al dolor), interfiriendo gravemente en la funcionalidad diaria (NHS, s.f.). Se suman estreñimiento crónico severo, alteraciones cognitivas y emocionales, así como disminución de la libido y disfunción eréctil (Patel et al., 2026; MedlinePlus, s.f.).

No se recomienda la interrupción abrupta del consumo. La suspensión repentina provoca síndrome de abstinencia con efectos adversos, por lo que debe realizarse siguiendo la pauta de un profesional (Medicover Hospitals, s.f.).

Factores de riesgo

Esta adicción resulta de la interacción entre factores biológicos, psicológicos y sociales previamente descritos en las referencias de los opioides.

Referencias bibliográficas

Agencia Española de Medicamentos y Productos Sanitarios. (2015, 13 de marzo). Codeína: nuevas restricciones de uso como antitusígeno en pediatría (MUH [FV], 3/2015). https://www.aemps.gob.es/informa/notasInformativas/medicamentosUsoHumano/seguridad/2015/docs/NI-MUH_FV_03-codeina.pdf

Agencia Española de Medicamentos y Productos Sanitarios (AEMPS). (s.f.). Ficha técnica: Codeisan 28,7 mg comprimidos. Centro de Información de Medicamentos (CIMA). https://cima.aemps.es/cima/dochtml/ft/1778/FT_1778.html

American Psychiatric Association. (2022). Manual diagnóstico y estadístico de los trastornos mentales (5ª ed., texto revisado.). Editorial Médica Panamericana.

Clínica Universidad de Navarra. (s. f.). Codeína. https://www.cun.es/enfermedades-tratamientos/medicamentos/codeina

Madurga Sanz, M. (2024). Codeína (solución oral): Reino Unido lo reclasifica como medicamento con receta médica, debido al uso fraudulento recreativo, también detectado en España. Panorama Actual del Medicamento. https://www.farmaceuticos.com/pam/actualidad/codeina-solucion-oralreino-unido-lo-reclasifica-como-medicamento-con-receta-medica-debido-al-uso-fraudulento-recreativo-tambien-detectado-en-espana/

Medicover Hospitals. (s. f.). Codeine. https://www.medicoverhospitals.in/es/medicine/codeine

Ministerio de Sanidad – Profesionales de la Salud – Buscador situación financiación medicamentos. (s. f.). https://www.sanidad.gob.es/profesionales/medicamentos.do?cn=795419&metodo=verDetalle&utm_source=chatgpt.com

Ministerio de Sanidad. (2024). Encuesta sobre Alcohol y otras Drogas en España (EDADES) 2024. Ministerio de Sanidad, Gobierno de España. https://pnsd.sanidad.gob.es/profesionales/sistemasInformacion/sistemaInformacion/pdf/2025/2025_Informe_EDADES.pdf 

Ministerio de Sanidad. (2025). Encuesta sobre uso de drogas en Enseñanzas Secundarias en España (ESTUDES) 2025. Ministerio de Sanidad, Gobierno de España. https://pnsd.sanidad.gob.es/profesionales/sistemasInformacion/sistemaInformacion/pdf/2025/ESTUDES_2025_Informe_nacional_df.pdf

National Health Service (NHS). (s. f.). Side effects of codeine. https://www.nhs.uk/medicines/codeine/side-effects-of-codeine/

Patel, P., Tharp, J. G., Eriator, I. I., & Rout, P. (2026). Codeine. En StatPearls. StatPearls Publishing. http://www.ncbi.nlm.nih.gov/books/NBK526029/