Terazosin
Uses of Terazosin
Terazosin is primarily used to manage symptoms of an enlarged prostate (benign prostatic hyperplasia, or BPH) in men, such as difficulty urinating. It belongs to the class of medications known as alpha-1 blockers.
It is also sometimes used to manage high blood pressure (hypertension).
Side effects of Terazosin
Dizziness
Light-headedness
Tiredness
Nausea
Nasal congestion
How Terazosin works
Terazosin is an alpha-1 blocker.
It primarily functions by blocking the action of adrenaline on alpha-1 receptors located on muscle cells in the prostate, bladder neck, and blood vessels. By preventing adrenaline from triggering these receptors and causing muscles to contract, Terazosin allows the muscles to relax.
As a result, it reduces the symptoms of an enlarged prostate by relaxing the muscles in the prostate and bladder neck, thereby improving urine flow.
Certified content
Written By
Doctor of Medicine
Reviewed By
BMS, FMC, MD Resident
Expert Advice
Dosage Forms Available
Terazosin is available for oral use in the form of tablets and capsules.
Age and Dose Restrictions
Terazosin is intended for adult males only. It is not recommended for use in females or children.
Contraindications
Terazosin should not be used by individuals who have a known allergy to it or similar alpha-1 blocker medicines such as doxazosin, prazosin, silodosin, alfuzosin, or tamsulosin.
It is also contraindicated in people with a history of orthostatic hypotension (low blood pressure when standing up).
Other Medications to Avoid with this Medicine
Terazosin can interact with other alpha-1 blockers (such as doxazosin and tamsulosin), antihypertensives (like metoprolol and lisinopril), nitrates (such as nitro-glycerine), and phosphodiesterase-5 inhibitors for erectile dysfunction (like sildenafil and tadalafil).
Overdose and Missed Dose
An overdose of Terazosin can potentially cause serious symptoms like fainting, fast heartbeat, skin rash, itching, shortness of breath, and prolonged painful erections. If you observe any of these symptoms, inform your doctor immediately.
If you miss a dose, take it as soon as you remember. However, if it is close to the timing of your next dose, skip the missed dose and continue with your regular schedule. Do not double the dose to make up for the missed one.
Management of Side Effects
Most side effects are temporary, generally harmless, and resolve when discontinuing this medicine. However, if you experience any severe side effects or worsening of any of the symptoms, please consult your doctor.
Taking the medication at bedtime can help minimise dizziness and light-headedness.
Getting up slowly from a sitting or lying position can also reduce the risk of light-headedness and potential falls.
Use in Driving and Operating Machinery
Terazosin may cause dizziness and light-headedness, which can affect your ability to drive or operate heavy machinery. Avoid these activities until you know how this medicine affects you.
Caution in Other Conditions
Individuals with liver disease should use this medicine with caution, as it can potentially worsen their condition.
Special Dietary and Lifestyle Recommendations
Limit the intake of liquids in the evening to reduce frequent urination at night.
Avoid alcohol while taking this medication, as it can further lower blood pressure and increase side effects such as dizziness.
Frequently asked questions
Can I use Terazosin for kidney problems?
No, it is not typically used for kidney problems. It is primarily used to manage symptoms of an enlarged prostate (benign prostatic hyperplasia or BPH) and sometimes, high blood pressure. Always consult your doctor for the right medication for your condition.
Is Terazosin safe for long-term use?
Yes, it can be used safely for long-term treatment of conditions like BPH and hypertension, as long as it is under a doctor's supervision. However, it is important to regularly review your need for ongoing treatment with your doctor.
Does Terazosin cause weight gain?
Weight gain is not a common side effect of this medicine. However, individual responses to medication can vary. If you experience unexplained weight gain while taking this medicine, please consult your doctor.
Can I suddenly stop taking Terazosin?
No, you should not stop taking it without consulting your doctor. Sudden withdrawal could lead to the return of your symptoms or could potentially cause a sudden increase in blood pressure.
Can Terazosin help with urinary tract infections (UTIs)?
Terazosin is not used to treat UTIs. It is used to relieve symptoms of an enlarged prostate in men, which can include difficulty urinating. If you suspect you have a UTI, please consult your doctor.
Is Terazosin a beta-blocker?
No, Terazosin is not a beta-blocker. It belongs to a class of medications called alpha-1 blockers.
Will Terazosin affect my sex life?
One of the rare but serious side effects of Terazosin is prolonged painful erections. If you experience this or any other sexual difficulties while taking this medicine, please consult your doctor.
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