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Problems With Ejaculation (21)
Abdominal Pain (15)
Body Odor (14)
Constipation (14)
Rash (7)
Light Headed (6)
Amlodipine (3)
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Tamsulosin Side Effects and Adverse Effects reported to US Food and Drug Administration (FDA)

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Showing 1-25 of 896 

Myelodysplastic Syndrome, Off Label Use, Bone Marrow Transplant, Graft Complication, Bone Marrow Failure, Graft Versus Host Disease (8398039-7)
on May 23, 2012 Male from UNITED STATES , weighting 185.2 lb, was treated with Tamsulosin Hcl. Directly after, patient experienced the unwanted or unexpected Tamsulosin side effects: myelodysplastic syndrome, off label use, bone marrow transplant, graft complication, bone marrow failure, graft versus host disease. Tamsulosin Hcl dosage: Unk.
Associated medications used:
  • Potassium Chloride (Unk)
  • Dexamethasone (Unk)
  • Ursodiol (Unk)
  • Hydrocortisone (Unk)
  • Voriconazole (Unk)
  • Symbicort (Unk)
  • Magnesium (Unk)
  • Vitamin D


Off Label Use, Skin Ulcer, Abdominal Abscess, Injection Site Extravasation, Injection Site Abscess (8392294-5)
Patient was taking Tamsulosin Hcl. Patient felt the following Tamsulosin side effects: off label use, skin ulcer, abdominal abscess, injection site extravasation, injection site abscess on May 21, 2012 from UNITED KINGDOM Additional patient health information: Male , 80 years of age, . Tamsulosin Hcl dosage: N/A.
Multiple prescriptions taken:
  • Beconase
  • Leuprolide Acetate
  • Fluticasone Propionate/salmeterol


Nausea, Blood Creatine Phosphokinase Increased, Muscular Weakness (8387282-9)
Adverse event was reported on Apr 12, 2012 by a Male taking Tamsulosin Hcl (Dosage: N/A) . Location: JAPAN , 68 years of age, weighting 125.7 lb, After Tamsulosin was administered, patient encountered several Tamsulosin side effects: nausea, blood creatine phosphokinase increased, muscular weakness.
Multiple concurrent drugs taken:
  • Estazolam
  • Betamethasone
  • Crestor
  • Zolpidem
  • Frandol S
  • Magnesium Oxide
  • Paxil
  • Bulkose
Patient was hospitalized and became disabled.

Nervousness, Dry Mouth, Abdominal Discomfort, Sleep Disorder (8387057-0)
on May 23, 2012 Male from UNITED STATES , weighting 164.0 lb, was diagnosed with
  • benign prostatic hyperplasia
and was treated with Tamsulosin Hcl. Directly after, patient experienced the unwanted or unexpected Tamsulosin side effects: nervousness, dry mouth, abdominal discomfort, sleep disorder. Tamsulosin Hcl dosage: 0.4mg 1 Daily Oral.


Memory Impairment (8384849-9)
on May 22, 2012 Male from UNITED KINGDOM , 73 years of age, weighting 163.1 lb, was treated with Tamsulosin. Patient felt the following Tamsulosin side effects: memory impairment. Tamsulosin dosage: Unk.
Multiple prescriptions taken:
  • Atorvastatin Calcium (10 Mg, Unk)
  • Metformin (Unk)
  • Clopidogrel (Unk)


Weight Decreased, Decreased Appetite, Diarrhoea (8383477-9)
Patient was taking Tamsulosin Hcl. After Tamsulosin was administered, patient encountered several Tamsulosin side effects: weight decreased, decreased appetite, diarrhoea on Mar 21, 2011 from UNITED STATES Additional patient health information: Male , 76 years of age, weighting 198.0 lb, . Tamsulosin Hcl dosage: N/A.
Multiple concurrent drugs taken:
  • Lantus
  • Coumadin
  • Januvia
  • Ensure (ensure)
  • Revlimid (5 Mg, Daily For 28 Days, Po)
  • Procrit
  • Colchicine
  • Glipizide


Atrial Flutter (8378230-6)
Adverse event was reported on May 15, 2012 by a Male taking Tamsulosin Hcl (Dosage: N/A) . Location: UNITED KINGDOM , 85 years of age, Directly after, patient experienced the unwanted or unexpected Tamsulosin side effects: atrial flutter.
Associated medications used:
  • Aspirin
  • Finasteride (5 Mg, 1 In 1 D, Oral)
  • Doxazosin Mesylate
  • Carbamazepine


Dysuria, Constipation (8374882-5)
on May 14, 2012 Male from UNITED STATES , weighting 229.3 lb, was treated with Tamsulosin. Patient felt the following Tamsulosin side effects: dysuria, constipation. Tamsulosin dosage: Unk.
Multiple prescriptions taken:
  • Lisinopril (10 Mg, Unk)
  • Sertraline (50 Mg, Unk)
  • Toviaz (4 Mg, 1x/day)


Dry Mouth, Mastication Disorder, Septic Shock, Pain, Weight Decreased, Decreased Appetite, Change Of Bowel Habit, Agitation, Dysstasia (8372890-1)
on May 16, 2012 Male from UNITED STATES , weighting 149.9 lb, was treated with Tamsulosin Hydrochloride. After Tamsulosin was administered, patient encountered several Tamsulosin side effects: dry mouth, mastication disorder, septic shock, pain, weight decreased, decreased appetite, change of bowel habit, agitation, dysstasia. Tamsulosin Hydrochloride dosage: Unk.
Multiple concurrent drugs taken:
  • Metoprolol (Unk)
  • Amlodipine (Unk)
  • Potassium (Unk)
  • Lovastatin (Unk)
  • Sutent (50 Mg, 24/42 Day Cycle)
  • Benicar (Unk)


Visual Acuity Reduced (8368070-6)
Patient was taking Tamsulosin. Directly after, patient experienced the unwanted or unexpected Tamsulosin side effects: visual acuity reduced on May 08, 2012 from UNITED STATES Additional patient health information: Male , weighting 172.0 lb, was diagnosed with
  • hypertonic bladder
and. Tamsulosin dosage: Unk.
Associated medications used:
  • Toviaz (4 Mg, 1x/day)


Anaemia, Small Intestinal Stenosis, Haematochezia (8365412-2)
Adverse event was reported on May 14, 2012 by a Male taking Tamsulosin Hcl (Dosage: 0.2 Mg) . Location: JAPAN , weighting 125.7 lb, Patient felt the following Tamsulosin side effects: anaemia, small intestinal stenosis, haematochezia.
Multiple prescriptions taken:
  • Mobic (10 Mg)
  • Depas (1df)
  • Mucosta (100 Mg)
  • Aspirin (100 Mg)
  • Coroherser-r (100 Mg)
  • Pentazocine Lactate
  • Halcion (0.5 Mg)
  • Metformin Hcl (500 Mg)
Patient was hospitalized.

Renal Failure Acute, Anaemia, Abdominal Wall Haematoma (8363357-5)
on May 14, 2012 Male from FRANCE , 61 years of age, was treated with Tamsulosin Hcl. After Tamsulosin was administered, patient encountered several Tamsulosin side effects: renal failure acute, anaemia, abdominal wall haematoma. Tamsulosin Hcl dosage: N/A.
Multiple concurrent drugs taken:
  • Amiodarone Hcl
  • Pentoxifylline
  • Valsartan
  • Simvastatin
  • Carvedilol
  • Pentoxifylline
  • Levothyroxine Sodium
  • Lovenox
Patient was hospitalized.

Neutropenia, Blood Product Transfusion Dependent, Pseudomonas Infection, Pleural Effusion, Nausea, Diverticulitis, Diarrhoea, Pneumonia, Blood Culture Positive (8360627-1)
on May 14, 2012 Male from UNITED STATES , weighting 171.1 lb, was treated with Tamsulosin Hcl. Directly after, patient experienced the unwanted or unexpected Tamsulosin side effects: neutropenia, blood product transfusion dependent, pseudomonas infection, pleural effusion, nausea, diverticulitis, diarrhoea, pneumonia, blood culture positive. Tamsulosin Hcl dosage: N/A.
Associated medications used:
  • Levothyroxine Sodium
  • Bactrim Ds
  • Bendamustine 100 Mg/vial Cephalon (191mg (90mg/m2) Iv)
  • Valacyclovir Hydrochloride
  • Rituximab 10 Mg/ml Idec Pharm/genentech (795mg (375mg/m2) Iv)


Renal Cell Carcinoma, Brain Oedema, Disease Progression (8359545-4)
Patient was taking Tamsulosin Hcl. Patient felt the following Tamsulosin side effects: renal cell carcinoma, brain oedema, disease progression on May 14, 2012 from JAPAN Additional patient health information: Male , 71 years of age, weighting 124.3 lb, . Tamsulosin Hcl dosage: 0.2 Mg, 1x/day.
Multiple prescriptions taken:
  • Loxonin (As Needed (60 Mg/day))
  • Temsirolimus (25 Mg, Weekly)
  • Adenosine (1 G, 3x/day)
  • Vitamin B12 (500 Ug, 3x/day)
  • Norvasc (2.5 Mg, 1x/day)
  • Temsirolimus (25 Mg, Unk)
  • Temsirolimus (25 Mg, Unk)
  • Magmitt (250 Mg, 3x/day)
Patient was hospitalized.

Platelet Count Decreased, Blood Pressure Fluctuation, White Blood Cell Count Increased (8356279-7)
Adverse event was reported on May 09, 2012 by a Male taking Tamsulosin (Dosage: 0.4 Mg, Daily) was diagnosed with
  • prostatic disorder
and. Location: UNITED STATES , weighting 130.1 lb, After Tamsulosin was administered, patient encountered several Tamsulosin side effects: platelet count decreased, blood pressure fluctuation, white blood cell count increased.
Multiple concurrent drugs taken:
  • Finasteride (5 Mg, Daily)
  • Levothyroxine (100 Ug, Daily)
  • Sutent (50 Mg, Daily)


Reticulocytopenia, Therapeutic Response Decreased, Portal Hypertension, Anaemia, Hepatic Encephalopathy, Hepatitis C, Streptococcal Bacteraemia, Peritonitis Bacterial, Varices Oesophageal (8352103-7)
on May 04, 2012 Male from UNITED STATES , 64 years of age, weighting 145.5 lb, was treated with Tamsulosin Hcl. Directly after, patient experienced the unwanted or unexpected Tamsulosin side effects: reticulocytopenia, therapeutic response decreased, portal hypertension, anaemia, hepatic encephalopathy, hepatitis c, streptococcal bacteraemia, peritonitis bacterial, varices oesophageal. Tamsulosin Hcl dosage: 0.8 Mg, Qd.
Associated medications used:
  • Ribavirin (Unk)
  • Spironolactone (100 Mg, Qd)
  • Interferon (Unk)
  • Furosemide (40 Mg, Unk)
  • Zinc Sulfate (220 Mg, Bid)
  • Flomax (Unk)
  • Cholestyramine (Unk)
  • Pulmicort (180 Mug, Bid)
Patient was hospitalized and became disabled.

Vertigo, Peripheral Coldness, Paraesthesia (8350553-6)
on May 04, 2012 Male from CROATIA (local name: Hrvatska) , 60 years of age, weighting 218.3 lb, was diagnosed with
  • benign prostatic hyperplasia
and was treated with Tamsulosin Hydrochloride. Patient felt the following Tamsulosin side effects: vertigo, peripheral coldness, paraesthesia. Tamsulosin Hydrochloride dosage: N/A.
Multiple prescriptions taken:
  • Dutasteride
  • Clarithromycin
  • Ramipril


Hyperkalaemia, Septic Shock, Haemorrhage, Infection, Ischaemic Cardiomyopathy (8350173-3)
Patient was taking Tamsulosin Hcl. After Tamsulosin was administered, patient encountered several Tamsulosin side effects: hyperkalaemia, septic shock, haemorrhage, infection, ischaemic cardiomyopathy on May 08, 2012 from UNITED STATES Additional patient health information: Male , weighting 283.0 lb, . Tamsulosin Hcl dosage: 0.4 Mg.
Multiple concurrent drugs taken:
  • Spironolactone (50 Mg)
  • Docusate Sodium (200 Mg)
  • Lipitor (20 Mg)
  • Aspirin (81 Mg)
  • Magnesium Oxide (2400 Mg)
  • Lisinopril (20 Mg)
  • Lanoxin (0.125 Mg)
  • Oxycodone Hcl
Patient was hospitalized.

Agitation, Anxiety, Blood Alkaline Phosphatase Increased, Blood Creatinine Increased, Mood Altered, Blood Urea Increased (8349690-1)
Adverse event was reported on May 03, 2012 by a Patient taking Tamsulosin (Dosage: 400 Ug, 2x/day) . Location: UNITED KINGDOM , 85 years of age, Directly after, patient experienced the unwanted or unexpected Tamsulosin side effects: agitation, anxiety, blood alkaline phosphatase increased, blood creatinine increased, mood altered, blood urea increased.
Associated medications used:
  • Xalatan (Unk)
  • Lumigan


Atrial Fibrillation, Dyspnoea (8348829-1)
on Apr 23, 2012 Male from UNITED STATES , 54 years of age, weighting 210.0 lb, was treated with Tamsulosin Hydrochloride. Patient felt the following Tamsulosin side effects: atrial fibrillation, dyspnoea. Tamsulosin Hydrochloride dosage: N/A.
Multiple prescriptions taken:
  • Amiodarone Hcl
  • Pravastatin Sodium
  • Paroxetine Hcl
  • Prilosec
  • Warfarin Sodium
  • Xyrem (See Image)
  • Xyrem (See Image)
  • Lisinopril And Hydrochlorothiazide
Patient was hospitalized.

Rash (8344018-5)
on Feb 01, 2011 Male from UNITED STATES , weighting 199.2 lb, was treated with Tamsulosin Hcl. After Tamsulosin was administered, patient encountered several Tamsulosin side effects: rash. Tamsulosin Hcl dosage: N/A.
Multiple concurrent drugs taken:
  • Vitamin C
  • Ferrous Sulfate Tab
  • Treanda


Constipation (8343397-2)
Patient was taking Tamsulosin Hydrochloride. Directly after, patient experienced the unwanted or unexpected Tamsulosin side effects: constipation on Apr 27, 2012 from UNITED STATES Additional patient health information: Male , 69 years of age, weighting 172.0 lb, . Tamsulosin Hydrochloride dosage: N/A.
Associated medications used:
  • Gemcitabine Hydrochloride (Last Dose On 30nov10 And Resumed On 09dec2010, On Day 8.)
  • Laxoberal
  • Pantoprazole
  • Buprenorphine (Transtec 35)
Patient was hospitalized.

Multiple Sclerosis Relapse, Clostridial Infection, Urinary Tract Infection (8327285-3)
Adverse event was reported on Apr 19, 2012 by a Male taking Tamsulosin Hcl (Dosage: N/A) . Location: UNITED STATES , 52 years of age, weighting 246.9 lb, Patient felt the following Tamsulosin side effects: multiple sclerosis relapse, clostridial infection, urinary tract infection.
Multiple prescriptions taken:
  • Metoprolol Tartrate
  • Potassium Chloride
  • Provigil
  • Omeprazole
  • Viagra
  • Avonex
  • Cholecalciferol
  • Pravachol
Patient was hospitalized.

Retrograde Ejaculation, Vision Blurred, Pruritus, Anxiety, Abdominal Discomfort, Urticaria, Dyspnoea, Product Substitution Issue (8318869-7)
on Apr 26, 2012 Male from UNITED STATES , 55 years of age, weighting 160.0 lb, was treated with Tamsulosin Hcl. After Tamsulosin was administered, patient encountered several Tamsulosin side effects: retrograde ejaculation, vision blurred, pruritus, anxiety, abdominal discomfort, urticaria, dyspnoea, product substitution issue. Tamsulosin Hcl dosage: 1 Capsule 1 Day Feb 18 - Feb 22. Patient was hospitalized.

Gastric Ulcer (8317536-3)
on Apr 19, 2012 Male from BULGARIA , 60 years of age, weighting 185.2 lb, was diagnosed with
  • benign prostatic hyperplasia
  • anaemia
  • haematoma
  • infection prophylaxis
  • renal cell carcinoma
and was treated with Tamsulosin. Directly after, patient experienced the unwanted or unexpected Tamsulosin side effects: gastric ulcer. Tamsulosin dosage: 0.4 Mg, Unk.
Associated medications used:
  • Venofer (Unk)
  • Dicynone (Unk)
  • Ciprofloxacin (Unk)
  • Axitinib (10 Mg, 2x/day)
  • Venofer (Unk)
Patient was hospitalized.

Showing 1-25 of 896 

Tamsulosin Health Episodes

How Can Tamsulosin Affect You?

i took tamsulosin and just got a fever afterwards...my doctor ...Keep Reading

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Tamsulosin sucks! I insurance (Tricare) will only allow me to have Tamsulasin because Flomax ...Keep Reading

I am 87 years old and have been taking 0,4 mg of Flomaxtra ...Keep Reading

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It is very important to keep track of all side effects and discuss them with your doctor. If you think you may have a medical emergency, call your doctor or 911 immediately.

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Most drugs have a large list of nonsevere or mild adverse effects which do not rule out continued usage. These effects depend on individual sensitivity, and can include nausea, dizziness, diarrhea, malaise, vomiting, headache, dermatitis, dry mouth, etc. Check commonly reported side effects . These can be considered a form of pseudo-allergic reaction, as not all users experience these effects; many users experience none at all.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Tamsulosin Information

Alternative TAMSULOSIN Names:TAMSULOSI

Active Ingredient: TAMSULOSI

More About Tamsulosin

Side Effects reported to FDA: 896. View Tamsulosin Adverse Reports

Tamsulosin safety alerts: 2005

Reported deaths: 39

Reported hospitalizations: 253

Flomax (tamsulosin HCl)

Audience: Ophthalmologists, Urologists, and other healthcare professionals

[Posted 11/22/2005] Boehringer Ingelheim and FDA notified healthcare professionals of revisions to PRECAUTIONS and ADVERSE REACTIONS sections of the prescribing information for Flomax, indicated for the treatment of the signs and symptoms of benign prostatic hyperplasia (BPH). A surgical condition termed Intraoperative Floppy Iris Syndrome (IFIS) has been observed during phacoemulsification cataract surgery in some patients treated with alpha-1 blockers including Flomax. Most of these reports were in patients taking the alpha-1 blocker when IFIS occurred, but in some cases alpha-1 blocker had been stopped prior to surgery. It is recommended that male patients being considered for cataract surgery, as part of their medical history, be specifically questioned to ascertain whether they have taken Flomax or other alpha-1 blockers. If so, the patient's ophthalmologist should be prepared for possible modifications to their surgical technique that may be warranted should IFIS be observed during the procedure.

[November 2005 - Letter - Boehringer Ingelheim]
[October 2005 - Label - Boehringer Ingelheim]

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