Silodosin

Enlarged Prostate

Treatment

1 FDA approval

15 Active Studies for Silodosin

What is Silodosin

Silodosin

The Generic name of this drug

Treatment Summary

Silodosin is a medication used to treat enlarged prostate in men over the age of 40. It works by binding to certain receptors in the prostate and relaxing the muscles in the lower urinary tract, which reduces pressure in the bladder and improves urinary symptoms. Silodosin is available as an oral capsule under the brand names Rapaflo and Urorec. It has been approved by the FDA, Europe, and Canada.

Rapaflo

is the brand name

image of different drug pills on a surface

Silodosin Overview & Background

Brand Name

Generic Name

First FDA Approval

How many FDA approvals?

Rapaflo

Silodosin

2009

34

Approved as Treatment by the FDA

Silodosin, also known as Rapaflo, is approved by the FDA for 1 uses including Enlarged Prostate .

Enlarged Prostate

Effectiveness

How Silodosin Affects Patients

Silodosin is a drug that works by blocking a certain type of receptor (alpha-1A) in the body. It is most often used to treat benign prostatic hyperplasia, and has been found to improve urinary flow, and reduce urinary storage and voiding symptoms. In general, it takes two to six hours for the drug to take effect. Silodosin can also cause a certain type of eye reaction during cataract surgery known as intraoperative floppy iris syndrome (IFIS).

How Silodosin works in the body

Benign prostatic hyperplasia (BPH) is a condition characterized by an enlarged prostate that can cause bladder outlet obstruction and other urinary symptoms. Silodosin is a drug used to treat BPH. It works by blocking certain types of receptors in the prostate, known as alpha-1 adrenoceptors. By blocking these receptors, Silodosin helps relax the smooth muscles of the prostate, improving obstruction and overactivity of the bladder. It also has an effect on the nerves in the bladder, helping to reduce storage symptoms.

When to interrupt dosage

The degree of Silodosin is contingent upon the diagnosed condition. The quantity of dosage also depends upon the delivery process outlined in the table beneath.

Condition

Dosage

Administration

Enlarged Prostate

4.0 mg, , 8.0 mg

Oral, Capsule - Oral, , Capsule, Capsule, gelatin coated - Oral, Capsule, gelatin coated

Warnings

Silodosin has seven contraindications, and its utilization should be avoided for the conditions given in the following table.

Silodosin Contraindications

Condition

Risk Level

Notes

Pulse Frequency

Do Not Combine

Pulse Frequency

Do Not Combine

Pulse Frequency

Do Not Combine

Pulse Frequency

Do Not Combine

Severe Hepatic Impairment

Do Not Combine

Pulse Frequency

Do Not Combine

Severe Hypersensitivity Reactions

Do Not Combine

Silodosin may interact with Pulse Frequency

There are 20 known major drug interactions with Silodosin.

Common Silodosin Drug Interactions

Drug Name

Risk Level

Description

Alfuzosin

Major

Silodosin may increase the hypotensive activities of Alfuzosin.

Aripiprazole lauroxil

Major

Silodosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Aripiprazole lauroxil.

Asenapine

Major

Silodosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Asenapine.

Brexpiprazole

Major

Silodosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Brexpiprazole.

Bucindolol

Major

Silodosin may increase the orthostatic hypotensive, hypotensive, and antihypertensive activities of Bucindolol.

Silodosin Toxicity & Overdose Risk

The lowest dose of silodosin that has caused toxicity in rats is 800mg/kg. In clinical trials, the most common side effect of overdose is low blood pressure. If the patient experiences this, they should be put in a lying down position to help restore their blood pressure and heart rate. Additional treatments such as administering fluids intravenously may also be needed. Since silodosin binds strongly to proteins in the blood, dialysis will not be effective.

image of a doctor in a lab doing drug, clinical research

Silodosin Novel Uses: Which Conditions Have a Clinical Trial Featuring Silodosin?

An ongoing investigation of 21 studies is assessing the potential of Silodosin to treat Enlarged Prostate.

Condition

Clinical Trials

Trial Phases

Enlarged Prostate

16 Actively Recruiting

Not Applicable, Phase 2

Silodosin Reviews: What are patients saying about Silodosin?

5

Patient Review

1/4/2020

Silodosin for Enlarged Prostate with Urination Problems

Silodosin has helped me to dramatically reduce the number of times I need to use the restroom at night. It's a vast improvement over Flomax, with none of the associated headaches or stuffy nose. The only " downside" is that it eliminates ejaculation; however, orgasm is still possible and it's much less messy this way!

4.3

Patient Review

4/28/2012

Silodosin for Enlarged Prostate

This treatment really helped me with my urine flow. However, I did experience some cognitive impairment and slowness which made it difficult to sustain concentration and focus.

4.3

Patient Review

1/9/2013

Silodosin for Enlarged Prostate

I THINK THIS MEDICINE MAKES MY HEARTBEAT STRONGER AND HARDER. I CAN FEEL IT PUMPING IN MY CHEST.

3.7

Patient Review

9/29/2012

Silodosin for Enlarged Prostate

I didn't experience the desired effect of this medication. After three doses, there was no seminal fluid. I couldn't find any information about this being a side effect, so I'll be asking for a different drug. Although it did help with my urine flow and sleep patterns.

2.7

Patient Review

1/2/2017

Silodosin for Enlarged Prostate with Urination Problems

I had chronic diarrhoea for a while and I eventually realized that this drug was the cause. You're supposed to take it with food, but even then I got occasional cramps.

2.3

Patient Review

8/14/2010

Silodosin for Enlarged Prostate

I took one 8mg pill and found it difficult to ejaculate. I also now have pain in my groin area. Not sure where the sperm went, but this was a scary experience. Needless to say, I won't be taking any more of this medication.

2.3

Patient Review

4/19/2019

Silodosin for Enlarged Prostate with Urination Problems

Though this treatment is effective, the side effect of fainting caused me to break my C1 vertebrae. I'm lucky that I didn't end up in a wheelchair or worse - dead. My doctor says that even though few people have this side effect, the risk is too much.

2.3

Patient Review

4/30/2019

Silodosin for Enlarged Prostate with Urination Problems

I didn't find this effective for my BPH symptoms; the only side effect I experienced was dizziness.

2

Patient Review

11/6/2012

Silodosin for Enlarged Prostate

I had improved flow for a few weeks, but then I started to experience dry orgasms and eventually no orgasm. I also had no morning erection and severe constipation. I switched to Flomax and have seen a complete turnaround so far.

1.7

Patient Review

5/13/2019

Silodosin for Stones in the Urinary Tract

After having kidney stones removed, my doctor put me on this medication. It did help with urine flow but caused terrible headaches and diarrhea. Once I stopped taking it per my doctor's orders, those problems went away.
image of drug pills surrounding a glass of water symbolizing drug consumption

Patient Q&A Section about silodosin

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

What are the side effects of silodosin?

"Anorgasmia is the medical term for regular difficulty reaching orgasm after ample sexual stimulation, causing personal distress. Anorgasmia can be primary, meaning the person has never experienced orgasm, or secondary, meaning they have experienced orgasm in the past, but no longer can. Anorgasmia is much more common in women than men, and is especially common among young adults. The condition can be occasional or persistent, and can be caused by a variety of physical and psychological factors.

Anorgasmia is the medical term for difficulty reaching orgasm after ample sexual stimulation. It can be primary, meaning the person has never experienced orgasm, or secondary, meaning they have experienced orgasm in the past, but no longer can. Anorgasmia is much more common in women than men, and is especially common among young adults. The condition can be occasional or persistent, and can be caused by a variety of physical and psychological factors."

Answered by AI

Is silodosin better than tamsulosin?

"The results showed that silodosin was better than tamsulosin in terms of stone expulsion rate, with 82.4% for silodosin and 61.5% for tamsulosin. The time it took to expel the stones was also significantly lower for silodosin, at 9.4 ± 3.8 vs."

Answered by AI

Does silodosin shrink the prostate?

"This helps to relieve urinary symptoms.

Silodosin is used by men to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia-BPH). It does not shrink the prostate, but it works by relaxing the muscles in the prostate and the bladder. This helps relieve urinary symptoms."

Answered by AI

What is silodosin used for?

"Silodosin is used to treat the signs and symptoms associated with an enlarged prostate, also known as benign prostatic hyperplasia (BPH). BPH is a common issue that can occur in men as they age, and is caused by the prostate gland enlarging and placing pressure on the bladder."

Answered by AI

What is the side effect of silodosin?

"Some common side effects of silodosin may include headaches, diarrhea, abnormal ejaculation, or a stuffy nose and sinus pain."

Answered by AI

Clinical Trials for Silodosin

Image of Centre Hospitalier de l'université de Montréal (CHUM) in Montréal, Canada.

Optilume vs Rezum for Enlarged Prostate

18+
Male
Montréal, Canada

Lower urinary symptoms (LUTS) affect older men and their frequency and severity increase with age. According to Berry et al., the histological diagnosis of benign prostatic hyperplasia (BPH) increases from 25% in the group age between 40 to 49 years to 80% in the group age between 70 to 79 years (1). However, this hyperplasia can lead to a bladder outlet obstruction (BOO) secondary to benign prostatic enlargement (BPE), causing storage and voiding symptoms, associated with a considerable impairment of the quality of life (2). Surgical therapy of BPH has continuously evolved in recent years. The current gold standard for the endoscopic treatment of BPH is the transurethral resection of the prostate (TURP). Other innovative techniques were developed including Urolift, transurethral laser enucleation (holmium, thulium) and Aquablation therapy. One of the latest technologies for the management of BPH are Optilume BPH Catheter System (Optilume®, Urotronic Inc, Minneapolis, USA) and Rezum Water Vapor Therapy (Rezum System, Bostocn Scientific, Marlborough, MA). The purpose of the present study is to compare between patient experience, symptom relief and functional improvement when using the Optilume BPH Catheter System (Optilume®, Urotronic Inc, Minneapolis, USA) and Rezum Water Vapor Therapy (Rezum System, Boston Scientific, Marlborough, MA).

Recruiting
Has No Placebo

Centre Hospitalier de l'université de Montréal (CHUM) (+1 Sites)

Naeem Bhojani, MD

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Image of Thunder Bay Regional Health Sciences Centre/Thunder Bay Regional Health Research Institute in Thunder Bay, Canada.

Traditional vs Top-Down HoLEP for Enlarged Prostate

18+
Male
Thunder Bay, Canada

Benign prostatic hyperplasia (BPH), the non-malignant enlargement of the prostate gland, places pressure on the urethra and causes urination difficulties and bladder problems. Lower Urinary Tract Symptoms (LUTS) secondary to BPH is a common condition in aging men, with an overall prevalence of more than 50% in those older than 50 years of age. Men with LUTS often experience sexual dysfunction including ejaculatory loss, painful ejaculation, and erectile dysfunction, which among other complications can also lead to a decreased quality of life. Holmium laser enucleation of the prostate (HoLEP), first reported by Fraundorfer et al in 1998, is a more recent step in the evolution of holmium laser prostatectomy. HOLEP offers patients the alternative of being treated endoscopically with minimal blood loss, short catheterization time, and decreased hospital stay. One noted drawback to HoLEP, and the primary reason why it has yet to become the new standard for treatment of symptomatic BPH, is the complexity of this procedure, with a prolonged learning curve. Modifications to the procedure have thus been explored in order to address this limitation. The "Top-Down" HoLEP technique is a novel technique which offers potential benefits to the Traditional HoLEP procedure, including decreased complexity, a reduced learning curve, with anticipated improved continence. This study will compare the operating time between the Top-Down Holmium Laser Enucleation of the prostate (HoLEP) and the Traditional HoLEP for the treatment of patients with symptomatic bladder outlet obstruction due to BPH in Northwestern Ontario.

Waitlist Available
Has No Placebo

Thunder Bay Regional Health Sciences Centre/Thunder Bay Regional Health Research Institute

Hazem Elmansy, MD

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