Terazosin IP 1 mg is a prescription medicine used to manage high blood pressure (hypertension) or urinary symptoms associated with benign prostatic hyperplasia (BPH), depending on the doctor's assessment. It belongs to the alpha-1 adrenergic blocker class and works by relaxing smooth muscles in blood vessels and, in men with an enlarged prostate, around the prostate and bladder outlet.
For high blood pressure, terazosin helps relax blood vessels, allowing blood to flow more easily and helping lower blood pressure. For BPH, it may help relieve symptoms such as difficulty starting urination, a weak urine stream, and frequent or nighttime urination. It does not shrink the prostate itself.
Common side effects include dizziness, headache, tiredness, and light-headedness. A sudden drop in blood pressure after the first dose or after restarting treatment can cause fainting, which is why careful dose initiation is important.
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Follow your prescription: Take the exact dose recommended by your healthcare professional. Do not increase the dose yourself, even if your symptoms have not improved.
Take the first dose at bedtime if instructed: Terazosin can cause a sudden drop in blood pressure, particularly after the first dose. Your doctor may advise taking the initial dose at bedtime to reduce the risk of dizziness or fainting.
Take it consistently: Follow your prescribed daily schedule. Take the tablet with water and follow the instructions on the product leaflet.
Be careful when restarting: If you stop taking terazosin for several days, contact your doctor before restarting. You may need to begin again at a lower dose to reduce the risk of fainting.
If you miss a dose: Follow your product leaflet or ask your pharmacist for advice. Do not take a double dose to make up for a missed tablet.
Rise slowly: Move gradually from lying down or sitting to standing, especially when beginning treatment or after a dose increase.
Monitor your response: If you are taking terazosin for blood pressure, check your readings as advised. If it is prescribed for BPH, report persistent urinary symptoms or difficulty passing urine.
Review other medicines: Tell your doctor about other blood pressure medicines, diuretics, erectile dysfunction medicines such as sildenafil, and all supplements, as combinations can increase the risk of low blood pressure.
Do not stop treatment independently: Contact your healthcare professional if side effects occur or if you think the medicine is not helping.
Seek urgent care when necessary: Fainting, chest pain, or an inability to pass urine requires prompt medical assessment.
Important guidance
Safety advice
Check with your doctor
AlcoholConsult your doctor
Alcohol may increase the blood-pressure-lowering effects of Terazosin IP 1 mg and cause dizziness, light-headedness, or fainting. These effects may be more noticeable when starting treatment or increasing the dose. Avoid alcohol until you understand how the medicine affects you, and consult your doctor if you regularly consume alcohol.
PregnancyConsult your doctor
Terazosin IP 1 mg is not routinely used during pregnancy unless a healthcare professional considers it necessary. Information about its safety during pregnancy is limited, and treatment decisions depend on the mother's condition and potential risks to the developing baby. Inform your doctor if you are pregnant, planning pregnancy, or suspect pregnancy before using this medicine.
BreastfeedingConsult your doctor
The safety of Terazosin IP 1 mg during breastfeeding has not been fully established, and information about its transfer into breast milk is limited. If you are breastfeeding or planning to breastfeed, consult your doctor before starting treatment. Your healthcare professional can assess the potential risks and benefits and recommend a suitable alternative if necessary.
DrivingConsult your doctor
Terazosin IP 1 mg may cause dizziness, drowsiness, blurred vision, or faintness, particularly after the first dose or a dose increase. These effects can impair driving and operating machinery. Avoid driving until you know how the medicine affects you, and do not drive if you feel dizzy, weak, or light-headed.
KidneyConsult your doctor
Inform your doctor if you have kidney disease before taking Terazosin IP 1 mg. Although terazosin does not usually require routine dose adjustment solely because of kidney impairment, your overall condition and other medicines may affect treatment suitability. Your healthcare professional should monitor your blood pressure, symptoms, and treatment response as appropriate.
LiverConsult your doctor
Tell your doctor if you have liver disease before taking Terazosin IP 1 mg. Terazosin should be used cautiously in patients with impaired liver function, and some medicines that affect liver enzymes may alter its effects. Your doctor can assess your medical history, review other medicines, and determine whether treatment and monitoring are appropriate.
Clinical review pending
This page uses verified catalogue facts and responsible medicine-information rules. It supports awareness and does not replace a doctor's advice.
