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Blood Glucose Increase (30)
No Ejaculate (22)
Confusion (20)
Mental Confusion (13)
Ejaculation (10)
Atrial Fibrillation (8)
Blurred Visison (7)
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Flomax Side Effects and Adverse Effects reported to US Food and Drug Administration (FDA)

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Showing 1-25 of 2112 

Cerebrovascular Accident (8337722-6)
on May 02, 2012 Male from UNITED STATES , 67 years of age, weighting 410.1 lb, was diagnosed with
  • benign prostatic hyperplasia
  • gastrooesophageal reflux disease
  • atrial fibrillation
  • hypertension
and was treated with Flomax. Directly after, patient experienced the unwanted or unexpected Flomax side effects: cerebrovascular accident. Flomax dosage: 0.4 Mg.
Associated medications used:
  • Nexium (40 Mg)
  • Pradaxa (300 Mg)
  • Metoprolol Tartrate (150 Mg)
  • Hyzaar
Patient was hospitalized.

Fatigue, Off Label Use (8331681-8)
Patient was taking Flomax. Patient felt the following Flomax side effects: fatigue, off label use on Nov 07, 2011 from UNITED STATES Additional patient health information: Male , 86 years of age, weighting 164.9 lb, . Flomax dosage: N/A.
Multiple prescriptions taken:
  • Entocort Ec
  • Entocort Ec
  • Entocort Ec
  • Entocort Ec
  • Entocort Ec
  • Lipitor
  • Ambien


Angioedema (8315667-5)
Adverse event was reported on Apr 19, 2012 by a Male taking Flomax (Dosage: N/A) . Location: UNITED STATES , 60 years of age, After Flomax was administered, patient encountered several Flomax side effects: angioedema.
Multiple concurrent drugs taken:
  • Daliresp


Oedema Peripheral, Diabetes Mellitus Inadequate Control, Venous Insufficiency (8314009-9)
on Apr 20, 2012 Male from UNITED STATES , 68 years of age, weighting 217.2 lb, was treated with Flomax. Directly after, patient experienced the unwanted or unexpected Flomax side effects: oedema peripheral, diabetes mellitus inadequate control, venous insufficiency. Flomax dosage: 0.4 Mg, Bid.
Associated medications used:
  • Omeprazole (40 Mg, Qd)
  • Verapamil (180 Mg, Bid)
  • Promacta (Unk)
  • Nplate (99 Mug, Qwk)
  • Digoxin (250 Mug, Unk)
  • Glyburide And Metformin Hydrochloride
  • Xalatan
  • Nplate (99 Mug, Qwk)



Renal Cell Carcinoma, Prostatitis, Kidney Infection, Sepsis, Diarrhoea, Chest Pain (8309462-0)
on Apr 11, 2012 Male from UNITED STATES , 57 years of age, weighting 378.0 lb, was treated with Flomax. Patient felt the following Flomax side effects: renal cell carcinoma, prostatitis, kidney infection, sepsis, diarrhoea, chest pain. Flomax dosage: N/A.
Multiple prescriptions taken:
  • Vytorin
  • Aspirin
  • Nicotine
  • Glimepiride
  • Glyburide
  • Nitroglycerin
  • Actos (45 Mg, Per Oral)
  • Finasteride
Patient was hospitalized.

Fatigue, Pancytopenia, Anaemia, Leukocytosis, Thrombocytopenia, Blood Sodium Decreased, Blood Glucose Increased, Pallor (8301829-X)
Patient was taking Flomax. After Flomax was administered, patient encountered several Flomax side effects: fatigue, pancytopenia, anaemia, leukocytosis, thrombocytopenia, blood sodium decreased, blood glucose increased, pallor on Mar 10, 2011 from UNITED STATES Additional patient health information: Male , 71 years of age, . Flomax dosage: N/A.
Multiple concurrent drugs taken:
  • Fluoxetine
  • Crestor
  • Lisinopril
  • Hct Ct (hydrochlorothiazide)
  • Tasigna (300 Mg, Bid, Oral ; 150 Mg, Bid, Oral ; 150 Mg, Bid, Oral)
  • Tasigna (300 Mg, Bid, Oral ; 150 Mg, Bid, Oral ; 150 Mg, Bid, Oral)
  • Tasigna (300 Mg, Bid, Oral ; 150 Mg, Bid, Oral ; 150 Mg, Bid, Oral)
  • Blood Cells, Packed Human (blood Cells, Packed Human)
Patient was hospitalized.

Pulmonary Fibrosis (8293804-9)
Adverse event was reported on Mar 29, 2012 by a Male taking Flomax (Dosage: N/A) . Location: UNITED STATES , 55 years of age, Directly after, patient experienced the unwanted or unexpected Flomax side effects: pulmonary fibrosis.
Associated medications used:
  • Fazaclo Odt (600 Mg, Qd, Oral)
  • Risperdal
  • Prednisolone
  • Spiriva
  • Zantac


Sensation Of Blood Flow (8278214-2)
on May 02, 2011 Male from UNITED STATES , weighting 160.1 lb, was treated with Flomax. Patient felt the following Flomax side effects: sensation of blood flow. Flomax dosage: N/A.
Multiple prescriptions taken:
  • Vytorin
  • Eye Drops
  • Vitamin Tab
  • Nexium


Dyspnoea, Wheezing, Visual Impairment, Pneumonia, Product Quality Issue, Dry Eye, Bronchitis (8277281-X)
on Apr 05, 2012 Male from UNITED STATES , 79 years of age, was treated with Flomax. After Flomax was administered, patient encountered several Flomax side effects: dyspnoea, wheezing, visual impairment, pneumonia, product quality issue, dry eye, bronchitis. Flomax dosage: N/A.
Multiple concurrent drugs taken:
  • Duoneb
  • Tylenol W/ Codeine
  • Klor-con
  • Lopressor
  • Cozaar
  • Ventolin
  • Zocor
  • Theophylline


Pleural Effusion, Deep Vein Thrombosis, Pulmonary Embolism (8263912-7)
Patient was taking Flomax. Directly after, patient experienced the unwanted or unexpected Flomax side effects: pleural effusion, deep vein thrombosis, pulmonary embolism on Mar 29, 2012 from UNITED STATES Additional patient health information: Male , 67 years of age, weighting 227.1 lb, . Flomax dosage: Also On 02oct2011.
Associated medications used:
  • Glucosamine
  • Avodart (Also On 02oct2011)
  • Bevacizumab (Last Dose Received On 16-aug-2011; Taken Off The Protocol On 11-oct-2011.)
  • Ondansetron
  • Prochlorperazine
  • Folic Acid
  • Codeine Phosphate
  • Aspirin
Patient was hospitalized.

Paraesthesia, Treatment Noncompliance, Neuropathy Peripheral (8262555-9)
Adverse event was reported on Jul 31, 2008 by a Male taking Flomax (Dosage: N/A) . Location: UNITED STATES , 71 years of age, Patient felt the following Flomax side effects: paraesthesia, treatment noncompliance, neuropathy peripheral.
Multiple prescriptions taken:
  • Hydroxyurea
  • Gleevec (400 Mg, Qd, Oral)
  • Procardia Xl
  • Allopurinol


Intervertebral Disc Protrusion, Osteitis Deformans, Azotaemia, Osteolysis, Hepatic Lesion, Tooth Loss, Mouth Ulceration, Hyperhidrosis, Hypokalaemia (8261159-1)
on Apr 03, 2012 Male from UNITED STATES , weighting 140.0 lb, was treated with Flomax. After Flomax was administered, patient encountered several Flomax side effects: intervertebral disc protrusion, osteitis deformans, azotaemia, osteolysis, hepatic lesion, tooth loss, mouth ulceration, hyperhidrosis, hypokalaemia. Flomax dosage: N/A.
Multiple concurrent drugs taken:
  • Bevacizumab
  • Zometa (4 Mg, Qmo)
  • Hydrochlorothiazide
  • Lasix
  • Lisinopril
  • Prednisone Tab
  • Diphenhydramine Hcl
  • Megestrol Acetate (40 Mg, Unk)
Patient was hospitalized.

Blood Bilirubin Increased, Hepatotoxicity, Alanine Aminotransferase Abnormal, Liver Function Test Abnormal (8245085-X)
on Mar 21, 2012 Male from UNITED STATES , 54 years of age, was treated with Flomax. Directly after, patient experienced the unwanted or unexpected Flomax side effects: blood bilirubin increased, hepatotoxicity, alanine aminotransferase abnormal, liver function test abnormal. Flomax dosage: N/A.
Associated medications used:
  • Tramadol Hcl (50mg As Required)
  • Lovenox
  • Votrient (800mg Per Day)
  • Lexapro
  • Simvastatin


Nausea, Pain In Extremity, Dizziness, Musculoskeletal Pain (8236702-9)
Patient was taking Flomax. Patient felt the following Flomax side effects: nausea, pain in extremity, dizziness, musculoskeletal pain on Mar 26, 2012 from UNITED STATES Additional patient health information: Male , weighting 169.0 lb, . Flomax dosage: 0.4 Mg 1 X Day Oral.

Cardiac Failure Congestive, Arthritis, Pneumonia (8236331-7)
Adverse event was reported on Mar 16, 2012 by a Male taking Flomax (Dosage: As Needed) was diagnosed with
  • prostatic disorder
and. Location: UNITED STATES , weighting 189.0 lb, After Flomax was administered, patient encountered several Flomax side effects: cardiac failure congestive, arthritis, pneumonia.
Multiple concurrent drugs taken:
  • Remicade
  • Losartan Potassium
  • Remicade
  • Remicade
  • Remicade
  • Prilosec
Patient was hospitalized.

Dyspnoea, Cardiac Failure, Anaemia, Joint Swelling, Rales (8235820-9)
on Mar 21, 2012 Male from CANADA , 89 years of age, weighting 160.9 lb, was treated with Flomax. Directly after, patient experienced the unwanted or unexpected Flomax side effects: dyspnoea, cardiac failure, anaemia, joint swelling, rales. Flomax dosage: N/A.
Associated medications used:
  • Sennoside
  • Coumadin
  • Flovent
  • Vitamin D
  • Symbicort
  • Digoxin
  • Lasix (120mg In The Am And 80mg In The Pm)
  • Bisoprolol Fumarate
Patient was hospitalized.

Stomatitis (8226217-6)
on Aug 18, 2010 Male from UNITED STATES , 53 years of age, was treated with Flomax. Patient felt the following Flomax side effects: stomatitis. Flomax dosage: N/A.
Multiple prescriptions taken:
  • Norvasc
  • Afinitor (Alt 05 Mg And 10 Mg Daily, Oral)
  • Metoprolol Tartrate
  • Avastin


Fatigue, Thrombocytopenia, Oral Pain, Stomatitis, Condition Aggravated (8225063-7)
Patient was taking Flomax. After Flomax was administered, patient encountered several Flomax side effects: fatigue, thrombocytopenia, oral pain, stomatitis, condition aggravated on Aug 28, 2009 from UNITED STATES Additional patient health information: Male , 80 years of age, weighting 190.9 lb, . Flomax dosage: N/A.
Multiple concurrent drugs taken:
  • Multivitamins (ascorbic Acid, Ergocalciferol, Folic Acid, Nicotinamide
  • Calcium Carbonate
  • Zocor
  • Coumadin
  • Afinitor (10 Mg, Qd, 10 Mg, Qod, Oral)
  • Afinitor (10 Mg, Qd, 10 Mg, Qod, Oral)
  • Toprol-xl
  • Lotrel


Syncope, Fall, Orthostatic Hypotension (8214110-4)
Adverse event was reported on Mar 14, 2012 by a Male taking Flomax (Dosage: 0.4 Mg Daily Po Recent) was diagnosed with
  • hypertension
and. Location: UNITED STATES , 65 years of age, weighting 217.4 lb, Directly after, patient experienced the unwanted or unexpected Flomax side effects: syncope, fall, orthostatic hypotension.
Associated medications used:
  • Toprol-xl
  • Aspirin
  • Norvasc (5mg Daily Po Chronic)
  • M.v.i.
  • Zinc Gluconate
Patient was hospitalized.

Micturition Disorder (8211607-8)
on Mar 08, 2012 Male from UNITED STATES , 70 years of age, weighting 269.0 lb, was treated with Flomax. Patient felt the following Flomax side effects: micturition disorder. Flomax dosage: N/A.
Multiple prescriptions taken:
  • Alka-seltzer Plus Severe Sinus Congestion + Cough Liquid Gels (2 Df, Once)


Sinusitis, Oropharyngeal Pain, Adenoma Benign, Myalgia, Benign Prostatic Hyperplasia, Prostatic Obstruction, Headache, Sluggishness, Muscle Spasms (8205187-0)
on Feb 28, 2012 Male from UNITED STATES , 63 years of age, weighting 300.0 lb, was treated with Flomax. After Flomax was administered, patient encountered several Flomax side effects: sinusitis, oropharyngeal pain, adenoma benign, myalgia, benign prostatic hyperplasia, prostatic obstruction, headache, sluggishness, muscle spasms. Flomax dosage: N/A.
Multiple concurrent drugs taken:
  • Avodart
  • Levsin Sl (hyoscyamine Sulfate)
  • Actos (15 Mg, 1 In 1 D, Per Oral, 45 Mg, 1 In 1 D, Per Oral)
  • Actos (15 Mg, 1 In 1 D, Per Oral, 45 Mg, 1 In 1 D, Per Oral)
  • Procardia Xl
  • Coreg Cr (carvedilol)
  • Lovastatin
  • Glucotrol Xl


Abdominal Pain Upper, Gallbladder Disorder, Emotional Distress, Nephrolithiasis, Anxiety, Cholecystitis (8201813-0)
Patient was taking Flomax. Directly after, patient experienced the unwanted or unexpected Flomax side effects: abdominal pain upper, gallbladder disorder, emotional distress, nephrolithiasis, anxiety, cholecystitis on Mar 03, 2012 from UNITED STATES Additional patient health information: Female , 21 years of age, weighting 160.9 lb, . Flomax dosage: 0.4 Mg, Unk.
Associated medications used:
  • Promethazine (25 Mg, Unk)
  • Phendimetrazine Fumarate (35 Mg, Unk)
  • Yaz
  • Sulfamethoxazole
  • Armodafinil (150 Mg, Unk)
  • Hydrocodone Bitartrate
  • Hydrocodone Bitartrate And Acetaminophen
  • Ketorolac Tromethamine (10 Mg, Unk)
Patient was hospitalized.

Pollakiuria (8199948-4)
Adverse event was reported on Nov 18, 2010 by a Male taking Flomax (Dosage: 0.8 Mg) was diagnosed with
  • benign prostatic hyperplasia
and. Location: UNITED STATES , 55 years of age, Patient felt the following Flomax side effects: pollakiuria.
Multiple prescriptions taken:
  • Avodart


Malignant Melanoma (8198905-1)
on Feb 29, 2012 Male from UNITED STATES , 91 years of age, weighting 173.1 lb, was treated with Flomax. After Flomax was administered, patient encountered several Flomax side effects: malignant melanoma. Flomax dosage: N/A.
Multiple concurrent drugs taken:
  • Plavix
  • Travatan
  • Synthroid
  • Crestor
  • Amlodipine
  • Metoprolol Succinate


Pain In Jaw (8198082-7)
on Feb 03, 2012 Male from UNITED STATES , 74 years of age, was treated with Flomax. Directly after, patient experienced the unwanted or unexpected Flomax side effects: pain in jaw. Flomax dosage: N/A.
Associated medications used:
  • Xgeva
  • Lipitor


Showing 1-25 of 2112 

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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.

Flomax Information

Alternative FLOMAX Names:TAMSULOSI

Active Ingredient: TAMSULOSI

Flomax Dosage, Warnings, Usage.

Side Effects reported to FDA: 2112. View Flomax Adverse Reports

Flomax safety alerts: 2005

Reported deaths: 60

Reported hospitalizations: 366

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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