From the FDA Drug Label
Tamsulosin Hydrochloride Capsules 0.4 mg once daily is recommended as the dose for the treatment of the signs and symptoms of BPH. For those patients who fail to respond to the 0. 4 mg dose after 2 to 4 weeks of dosing, the dose of Tamsulosin Hydrochloride Capsules can be increased to 0.8 mg once daily.
The recommended dose and frequency of Flomax (tamsulosin) is 0.4 mg once daily, which can be increased to 0.8 mg once daily if patients fail to respond after 2 to 4 weeks of dosing 1.
From the Research
Flomax (tamsulosin) should be prescribed at a dose of 0.4 mg taken once daily, approximately 30 minutes after the same meal each day, as this dose is effective for most men with benign prostatic hyperplasia (BPH) and has a favorable safety profile, as shown in studies such as 2 and 3. The medication works by relaxing the muscles in the prostate and bladder neck, making it easier to urinate. Some key points to consider when prescribing Flomax include:
- The medication should be swallowed whole with water and not crushed or chewed.
- It's best taken consistently at the same time each day to maintain steady blood levels.
- Patients may experience side effects including dizziness, especially when standing up quickly, decreased blood pressure, headache, or retrograde ejaculation.
- If a patient experiences severe dizziness or fainting, they should contact their healthcare provider immediately.
- It's essential to continue taking Flomax as prescribed, even if symptoms improve, and to inform the doctor about all other medications being taken to avoid potential interactions. The most recent and highest quality study, 3, supports the use of tamsulosin in combination with finasteride for the treatment of BPH, but also notes that tamsulosin alone is effective and widely used. Overall, the recommended dose and frequency of Flomax are supported by the available evidence, including studies such as 2 and 3, which demonstrate the efficacy and safety of tamsulosin in the treatment of BPH.