Maxflow 0.4mg Capsules contain the active ingredient Tamsulosin, which is used to treat symptoms of an enlarged prostate, also known as benign prostatic hyperplasia (BPH). Tamsulosin works by relaxing the muscles in the prostate and bladder neck, making it easier to urinate. Maxflow is usually taken once daily, and it may take several weeks to see the full benefit of the medication. It is important to follow the dosage instructions provided by your doctor or pharmacist and to not exceed the recommended dose. Common side effects of Maxflow include dizziness, headache, and runny or stuffy nose.