Ir al contenido principal

¿Puedo tomar Guanfacina y Tizanidina juntos?

Guía de interacción de medicamentos

Tomar estos dos medicamentos juntos puede hacer que su presión arterial baje demasiado y hacer que se sienta muy somnoliento o mareado. Puede sentirse débil, aturdido o incluso desmayarse, especialmente al levantarse rápidamente. También puede ralentizar significativamente su ritmo cardíaco.

Continúa leyendo abajo

Por qué sucede esto

Both guanfacine and tizanidine are 'alpha-2 agonists'. This means they work in a similar way to relax blood vessels and slow down the nervous system. When used together, their effects add up, leading to a much stronger impact on blood pressure, heart rate, and alertness than either drug would have on its own.

You should speak to your doctor before taking these medicines together. If your doctor decides you need both, they may start you on a lower dose and monitor your blood pressure and heart rate closely. Avoid driving or operating machinery until you know how this combination affects you. Get up slowly from a sitting or lying position to prevent dizziness.

Continúa leyendo abajo

Low blood pressure and heart rate

Both medicines can significantly lower your blood pressure and heart rate. Do not stop taking them suddenly, as this can cause a dangerous 'rebound' spike in blood pressure and a rapid heartbeat. Always taper the dose gradually under medical supervision.

Liver impairment

Tizanidine can cause serious liver damage. You must have regular blood tests to check your liver function, especially during the first few months of treatment. Seek immediate medical help if you notice yellowing of the skin or eyes.

Severe drowsiness and sedation

These medicines cause significant drowsiness that is much stronger when they are taken together or with alcohol. This can severely impair your ability to drive or operate machinery safely.

Interrupción repentina del tratamiento

No deje de tomar tizanidina de repente. Hacerlo puede causar un aumento rápido de la presión arterial y la frecuencia cardíaca. Su dosis debe reducirse gradualmente.

Alcohol

It is best to avoid or strictly limit alcohol while taking these medicines. Both guanfacine and tizanidine cause drowsiness and can lower your blood pressure. Alcohol will significantly increase these effects, making you feel very dizzy, sleepy, or lightheaded, and increasing the risk of falls or accidents.

Comidas ricas en grasa

Taking this medicine with a high-fat meal can significantly increase the amount of medicine absorbed into your bloodstream. This increases the risk of side effects like low blood pressure, slow heart rate, and extreme sleepiness. You should take it at the same time each day, either with or without food, but avoid high-fat meals at the time of dosing.

Jugo de toronja

Grapefruit juice can stop your body from breaking down guanfacine properly. This can lead to higher levels of the medicine in your blood, increasing the risk of side effects. Avoid drinking grapefruit juice while taking this medicine.

Cafeína (Café, Té, Bebidas Energéticas)

You should avoid or strictly limit caffeine while taking tizanidine. Caffeine can interfere with how your body breaks down this medicine, leading to higher levels of tizanidine in your blood. This can increase the risk of side effects like low blood pressure, a slow heart rate, and extreme sleepiness.

Continúa leyendo abajo

Taking multiple medicines? Our Verificador de Interacciones de Medicamentos helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Descargo de responsabilidad

Esta información es solo para fines educativos generales y no debe considerarse como un sustituto del consejo médico profesional. Siempre consulte a su médico de cabecera, farmacéutico u otro profesional de la salud calificado antes de tomar decisiones sobre sus medicamentos. Las circunstancias individuales pueden variar, y solo un profesional de la salud que conozca su historial médico puede proporcionar orientación personalizada.

Continúa leyendo abajo

Historial del artículo

La información en esta página está escrita y revisada por pares por clínicos calificados.

  • 25 Ene 2026 | Publicado originalmente
verificador de elegibilidad para la gripe

Pregunta, comparte, conecta.

Navega por discusiones, haz preguntas y comparte experiencias en cientos de temas de salud.

verificador de síntomas

¿Te sientes mal?

Evalúa tus síntomas en línea de forma gratuita

Suscríbete al boletín de Patient

Tu dosis semanal de consejos de salud claros y confiables, escritos para ayudarte a sentirte informado, seguro y en control.

Por favor, introduce una dirección de correo electrónico válida

By subscribing you accept our Política de Privacidad. Puedes darte de baja en cualquier momento. Nunca vendemos tus datos.