Can I take Doxazosin and Furosemide together?

Por qué sucede esto

Both medicines work to lower blood pressure but in different ways. Doxazosin relaxes your blood vessels, while furosemide (a 'water tablet') removes excess fluid from your body. When used together, their effects add up, which can lead to an excessive drop in blood pressure.

Be careful when getting up from a sitting or lying position; move slowly to give your body time to adjust. Your doctor may want to monitor your blood pressure more closely or adjust your doses when starting this combination. If you feel very dizzy or faint, sit or lie down immediately and contact your doctor.

Hipotensión tras la primera dosis

Doxazosina can cause a sudden drop in blood pressure, especially after the very first dose. This may make you feel dizzy or faint when standing up. It is recommended to take your first dose at bedtime to avoid falls.

Cirugía de cataratas

If you are due to have eye surgery for cataracts, you must tell your surgeon you are taking doxazosin. It can cause a complication called 'Floppy Iris Syndrome' which the surgeon needs to prepare for.

Deshidratación y desequilibrio de electrolitos

Furosemide can cause severe loss of body water and salts. You must seek medical advice if you develop severe vomiting, diarrhoea, or signs of dehydration like extreme thirst or muscle cramps.

Alergia a las sulfonamidas

If you are allergic to 'sulpha' medicines (such as certain antibiotics like co-trimoxazole), you may also have a serious allergic reaction to furosemide.

Gota

La furosemida puede aumentar los niveles de ácido úrico en su sangre, lo que puede desencadenar un ataque de gota doloroso o empeorar la gota existente.

Alcohol

It is best to avoid or strictly limit alcohol while taking these medicines. Both doxazosin and furosemide lower your blood pressure; alcohol also has this effect. Combining them can cause your blood pressure to drop too low, leading to dizziness, lightheadedness, or fainting, especially when standing up.

Liquorice (Natural/Black)

Avoid eating large amounts of natural black liquorice. It can cause your body to lose potassium and retain salt, which opposes the effect of furosemide and may worsen heart or blood pressure conditions.

Cafeína (Café, Té, Bebidas Energéticas)

Limite su consumo de cafeína. La cafeína es un diurético suave y puede aumentar el efecto de pérdida de agua de la furosemida, lo que potencialmente incrementa el riesgo de deshidratación o desequilibrios electrolíticos.

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.