Silodosin

Urief

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(฿17.67/tablet)
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Urief 4 mg — a medicine for an enlarged prostate with silodosin, relaxing prostate muscle so urine flows more freely

💊 Active ingredient: Silodosin
⏱️ How to use: swallow whole with water, twice daily
🍽️ Condition: after breakfast and the evening meal
📦 Pack: 30 tablets/box (3 strips × 10)
⚡ Highlight: prostate selective, little effect on blood pressure
🌡️ Storage: below 30°C, away from sunlight and moisture

ตัวเลือก: จำนวน 30 เม็ด
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จัดส่งสินค้าอย่างเป็นส่วนตัวภายในประเทศไทย โดยบรรจุภัณฑ์ไม่ระบุรายละเอียดสินค้า ลูกค้าสามารถตรวจสอบเงื่อนไขการจัดส่งและการคืนสินค้าได้ตามนโยบายของร้าน หากมีข้อสงสัยสามารถติดต่อทีมงานเพื่อขอข้อมูลเพิ่มเติม

ตัวเลือก

What is Urief 4 mg?

Urief 4 mg is a medicine for benign prostatic hyperplasia containing silodosin, an alpha-1 blocker that selectively targets alpha-1A receptors in the smooth muscle of the prostate and bladder neck. Relaxing that muscle widens the urinary outlet, improving flow and easing incomplete emptying and night-time urination. It is taken after food as advised by a doctor or pharmacist.

🛒 30 tablets (3 strips × 10) · authentic · 24-hour dispatch from Intimo Life — consult a doctor or pharmacist before use.

Product Description

Urief 4 mg treats benign prostatic hyperplasia (BPH). Its active ingredient silodosin is an alpha-1 blocker acting selectively on alpha-1A receptors in the smooth muscle of the prostate and bladder neck. As that muscle relaxes, the outlet widens, so urine flows more strongly and the bladder empties better.

📊 Key facts

  • More common with age — histological studies find BPH in 50-60% of men in their 60s, rising to 80-90% of those over 70.
  • Symptoms affect the majority — around 56% of men aged 50-79 report symptoms attributable to BPH.
  • Fast acting — alpha-blockers peak in roughly 72 hours and typically improve symptom scores by about 4-6 points.
  • Prostate selective — silodosin barely acts on alpha-1B receptors in arterioles, so it affects blood pressure less than non-selective alpha-blockers such as Cazosin (Doxazosin).

🏭 Urief is made by Kissei Pharmaceutical in Japan and marketed by Eisai Co., Ltd., Tokyo. Each carton holds 30 tablets (3 strips × 10) of silodosin 4 mg.

⚠️ Tell your doctor or pharmacist before starting Urief if you have liver or kidney impairment or are due for eye surgery.

Supatcheree A., Pharmacist

Medically reviewed by

Supatcheree A., Pharmacist | Sources: NHS, StatPearls, LiverTox

Last reviewed: 2026-08-05

About Urief

What is Urief 4 mg?

Urief 4 mg is the brand name for silodosin tablets containing 4 mg per tablet, manufactured by Kissei Pharmaceutical in Japan. It belongs to the selective alpha-1 blocker class, developed specifically to treat the urinary symptoms caused by benign prostatic hyperplasia.

What distinguishes silodosin is its selectivity for alpha-1A receptors, the subtype densely present in the smooth muscle of the prostate, bladder neck, and proximal urethra. That contrasts with alpha-1B receptors, abundant in blood vessel walls, which govern blood pressure. The drug therefore relaxes muscle where it is needed while interfering little with vascular tone.

Urief does not shrink the prostate. It reduces the squeezing force of the muscle around the urethra, which is why it relieves symptoms faster than medicines that reduce prostate volume.

What does Urief 4 mg treat?

The main indication for Urief 4 mg is relief of lower urinary tract symptoms caused by benign prostatic hyperplasia.

The symptoms it helps fall into two groups. Voiding symptoms include a weak stream, having to strain, hesitancy before flow starts, an intermittent stream, and the feeling of incomplete emptying afterwards. Storage symptoms include urinary frequency, urgency that is hard to hold, and waking repeatedly at night to urinate.

Urief does not treat bacterial cystitis or prostate cancer. If you have burning, cloudy urine, fever, or blood in the urine, see a doctor first.

How to take Urief 4 mg and dosage

Urief 4 mg tablets are swallowed whole with water. Do not crush, chew, or split them.

The usual adult dose is silodosin 4 mg twice daily, after breakfast and after the evening meal. In some countries an 8 mg once-daily regimen taken with food is used instead. Doctors may start at a lower dose and titrate upward in older patients or those with reduced kidney function.

Taking the tablet with or after food genuinely matters: it keeps blood levels steadier and reduces the chance of dizziness from a blood pressure drop in the early days. Take it at the same times each day, and do not adjust the dose yourself even once symptoms improve. Always check with a pharmacist or doctor before changing the dose.

What are the side effects of Urief 4 mg?

The most common side effect of Urief is a change in ejaculation: reduced semen volume or no semen at all (retrograde ejaculation or anejaculation). It happens because the drug relaxes the bladder neck, so semen flows backwards into the bladder rather than out through the urethra. It occurs more often than with other alpha-blockers because silodosin is more selective.

Other reported effects include dizziness, light-headedness, nasal congestion, diarrhoea, dry mouth, and a drop in blood pressure on standing. That last one occurs less often than with non-selective alpha-blockers because silodosin targets the prostate far more than blood vessels.

If you experience near-fainting, palpitations, a widespread rash, or difficulty breathing, stop the medicine and seek medical attention immediately.

Contraindications and precautions for Urief

Urief is not suitable for anyone allergic to silodosin, or for people with severe liver or kidney impairment, because blood levels rise substantially and raise the risk of side effects.

The most important precaution concerns eye surgery. Selective alpha-blockers are associated with intraoperative floppy iris syndrome, so anyone due to have cataract or other eye surgery must tell their ophthalmic surgeon they are taking or have taken Urief, even if it was stopped some time ago.

Stand up slowly during the first week, as light-headedness can occur, and avoid driving or operating machinery until you know how your body responds. If you feel dizzy, sit or lie down until it passes, and tell your pharmacist if it continues beyond two weeks.

Urief compared with other BPH medicines

Several oral medicines treat BPH, differing mainly in receptor selectivity and their effect on blood pressure.

  • Urief (Silodosin) — the most alpha-1A selective of the group, so it affects blood pressure least, but it changes ejaculation more often than the others.
  • Cazosin (Doxazosin) — a non-selective alpha-blocker that lowers blood pressure at the same time, useful for men who also have hypertension, though light-headedness needs watching.
  • Cardura XL (Doxazosin XL) — an extended-release doxazosin taken once daily, giving steadier drug levels than the immediate-release form.

In short: if your blood pressure is normal and you want to avoid dizziness, Urief fits better. If you also have high blood pressure and would rather manage both with one tablet, ask your doctor about doxazosin.

Can Urief be taken with other medicines?

Urief interacts with several drug classes, so tell your pharmacist or doctor everything you take, including supplements and herbal products.

The class needing most care is strong CYP3A4 inhibitors such as ketoconazole and itraconazole, which push silodosin blood levels much higher and increase dizziness risk. The other is erectile dysfunction and blood pressure medicines, whose blood-pressure-lowering effects add together and can cause light-headedness on standing.

Taking two alpha-blockers at once does not improve results; it only raises the risk of low blood pressure. Do not combine Urief with another medicine from the same class without medical advice.

How fast does Urief work?

Alpha-blockers such as Urief act quickly compared with other drug classes used for the same condition.

Many men notice a stronger stream within the first few days, and the effect of this class peaks at roughly 72 hours after starting, improving symptom severity scores by about 4 to 6 points on average.

Judge the real benefit over at least four weeks, though, because night-time frequency usually improves more slowly than stream strength. If a full month brings no improvement, go back to your doctor rather than increasing the dose yourself.

Where to buy Urief 4 mg?

Where to buy Urief 4 mg?

Order online from Intimo Life with delivery across Thailand in 1-3 business days, packed discreetly for privacy with no product name shown on the parcel.

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เนื้อหาในบทความนี้มีจุดประสงค์เพื่อให้ความรู้ทั่วไปเท่านั้น ไม่ได้มีเจตนาทดแทนคำแนะนำ การวินิจฉัย หรือการรักษาจากแพทย์หรือเภสัชกรผู้เชี่ยวชาญ หากมีข้อสงสัยเกี่ยวกับอาการหรือการใช้ยา ควรปรึกษาแพทย์หรือเภสัชกรก่อนเสมอ

Frequently Asked Questions

BPH comes from age-related hormone changes that make prostate cells multiply and press on the urethra running through the gland. Age is the main risk factor, then family history, obesity, and diabetes. It is not cancer and does not raise prostate cancer risk.

Mild symptoms that do not disrupt daily life can simply be monitored. Left to worsen, BPH can cause retained urine, repeated urinary infections, bladder stones, or acute retention needing emergency catheterisation. If symptoms disturb your sleep, see a doctor.

Urief relieves symptoms by relaxing muscle; it does not shrink the prostate. Stop it and symptoms usually return within days. Men who respond well often continue long term under medical review, and those with a much enlarged prostate may need another medicine.

If the next dose is still hours away, take it with or after food. If it is close, skip it and carry on as usual. Never take two tablets to catch up, as that raises the risk of dizziness from a blood pressure drop. Set a reminder tied to your mealtimes.

It is not physically harmful. There is no pain and no damage to the reproductive organs, and orgasm feels the same. It returns to normal within days of stopping. The one thing to plan around is conception: natural fertility is reduced while you take the medicine, so tell your doctor if you are trying for a baby.

Yes. Urinary symptoms in older men have several causes: benign enlargement, infection, stones, and prostate cancer. Doctors usually examine you, test the urine, and may check a PSA level. Starting medication without assessment can mask another condition needing prompt treatment.

No. Urief is licensed only for men with benign prostatic hyperplasia. Women have no prostate, so there is no indication and no safety data. Women with frequency or incontinence should see a doctor, as the treatments are an entirely different class. Not for children either.

Keep it to a minimum. Alcohol dilates blood vessels and adds to the medicine's blood-pressure-lowering effect, increasing dizziness on standing, especially in the first week. It is also a diuretic that makes night-time toilet trips more frequent.

Store below 30°C, away from direct sunlight and moisture. Keep tablets in the original blister until you take them; foil protects against humidity better than a pill organiser. Avoid bathrooms and cars, keep out of reach of children, and check the expiry date.

The price depends on pack size and the current listing. See the up-to-date price on this product page at Intimo Life, which shows the price per box and the average per tablet. For dosage questions, message our pharmacist first.

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