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Can I take Lercanidipine and Promethazine together?

دليل تفاعل الأدوية

Taking these two medicines together can cause your blood pressure to drop lower than intended. This might make you feel dizzy, lightheaded, or faint, especially when standing up quickly. Additionally, both drugs can cause drowsiness, which may be more intense when they are used at the same time.

تابع القراءة أدناه

لماذا يحدث هذا

Lercanidipine works by relaxing your blood vessels to lower blood pressure. Promethazine, while primarily an antihistamine, can also cause blood vessels to widen slightly and has a sedating effect on the brain. When combined, these effects add together, increasing the risk of low blood pressure and sleepiness.

You should use caution when taking these medicines together. Monitor your blood pressure regularly and be careful when getting out of bed or standing up. If you feel very dizzy or sleepy, avoid driving or operating machinery. If you experience fainting or severe dizziness, contact your doctor to see if your doses need adjusting.

تابع القراءة أدناه

Breathing problems (e.g. asthma, COPD, sleep apnoea)

Promethazine can cause severe breathing difficulties and should be avoided if you have serious lung disease or breathing problems, as it can suppress your respiratory system. Promethazine must not be given to children under 2 years of age because it can cause life-threatening breathing difficulties (respiratory depression).

Glaucoma or prostate issues

Promethazine can worsen symptoms of narrow-angle glaucoma (increasing eye pressure) or cause sudden inability to pass urine if you have an enlarged prostate.

Drowsiness and safety-critical tasks

Promethazine causes significant drowsiness that can last into the next day. Do not drive or operate machinery if you feel sleepy or if your alertness is impaired.

Severe liver or kidney disease

Lercanidipine is not recommended if you have severe liver or kidney problems. Ensure your doctor is aware of your condition before starting treatment.

الكحول

It is best to avoid or strictly limit alcohol while taking these medicines. For lercanidipine, alcohol can increase the blood-pressure-lowering effect, making you feel dizzy or faint. For promethazine, alcohol increases the sedative effect, making you dangerously drowsy and increasing the risk of breathing difficulties.

الجريب فروت وعصير الجريب فروت

You must not eat grapefruit or drink grapefruit juice while taking lercanidipine. Grapefruit can significantly increase the amount of the medicine in your blood, making side effects like dizziness, headaches, and a fast heartbeat much more likely.

وجبات غنية بالدهون

Lercanidipine should be taken at least 15 minutes before a meal. Taking it with or immediately after a high-fat meal can significantly increase the amount of medicine absorbed by your body, which may lead to more side effects.

تابع القراءة أدناه

Taking multiple medicines? Our مدقق تفاعلات الأدوية 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.

إخلاء المسؤولية

هذه المعلومات لأغراض تعليمية عامة فقط ولا ينبغي الاعتماد عليها كبديل للنصيحة الطبية المهنية. استشر دائمًا طبيبك العام أو الصيدلي أو أي متخصص رعاية صحية مؤهل آخر قبل اتخاذ قرارات بشأن أدويتك. قد تختلف الظروف الفردية، ولا يمكن إلا لمتخصص الرعاية الصحية الذي يعرف تاريخك الطبي تقديم إرشادات مخصصة.

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  • 25 يناير 2026 | نُشر في الأصل
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