Request ConsultationTamsulosin is a prescription medicine sold under the brand name Flomax that is used for the treatment of an enlarged prostate, also known as an alpha blocker. The treatment of benign prostatic hyperplasia, or BPH, is important; tamsulosin is a group of medicine which is an alpha blocker. It blocks the receptors in the prostate and bladder neck, relaxing the muscle, which helps improve flow and eases BPH symptoms.
Important Warnings while taking Tamsulosin
It is advised not to consume it if the patient is allergic to tamsulosin or any other ingredient in the medicine. It is also noted that a sudden drop in blood pressure which leads to fainting and dizziness, and it is advised to consult the doctor. Consumption of alcohol can worsen dizziness and blood pressure. If the patient undergoes any surgeries while on the treatment, it is advised to contact the doctor and tell the respective healthcare professional to avoid complications.
It is advised not to consume it with other alpha blockers, as it may slow or hinder the activity and efficiency of the treatment. Consumption of tamsulosin with strong CYP3A4 inhibitors, as it may increase the level in the blood, which may result in severe complications. Enlarged prostate and prostate cancer can be misdiagnosed; any symptoms experienced should be reported and discussed with the doctor.
Other medication interactions, like over-the-counter drugs, vitamins, or other herbal products, should be conveyed to the doctor at the time of treatment. It is not advised to discontinue the medicine without consultation, as discontinuation can lead to complications. If stopped, consult the healthcare professional and then start the treatment.
A rare condition called priapism, a prolonged and potentially painful erection unrelated to sexual activity, has also been reported. It requires immediate medical attention because delayed treatment can result in permanent erectile dysfunction.
Things to consider before taking Tamsulosin consumption
Before taking Tamsulosin, patients should tell their healthcare provider if they have:
- Planned eye surgery
- Allergies to other drugs
- History of kidney and liver problems
- Hypotension
- A history of cataracts or glaucoma
- Allergy to sulfa drugs
- Consumption of other alpha blockers
- Administration of certain antibiotics or antifungals
- Heart or blood-pressure problems.
- Current treatment with medicines for erectile dysfunction.
- Medicines that inhibit CYP3A4 or CYP2D6.
Tamsulosin is indicated for use in treating BPH symptoms and does not shrink the prostate gland or treat the condition itself. As there is the potential to have overlapping symptoms between prostate cancer and BPH, medical assessment prior to and during treatment could be necessary.
Application/Consumption
It is an oral medication that is taken once in a day. The FDA approved Flomax capsules have to be taken around 30 minutes after taking the same meal every day. The constant association with food will ensure that drug exposure remains constant.
It should be taken as a complete pill without breaking, chewing, or opening it. Patients should follow the directions carefully and not increase the dose on their own.
In case of missed doses, it is recommended by the FDA label that patients start with 0.4 mg once in a day dose. As dizziness and hypotension can occur, patients should be careful when rising from a sitting or lying position, especially during the first few days of starting therapy and increasing the dose.
Dosing information
The usual recommended starting dose of tamsulosin for BPH is 0.4 mg once daily, taken approximately 30 minutes after the same meal each day.
For patients who do not respond adequately to 0.4 mg after 2 to 4 weeks, the dose may be increased to 0.8 mg once daily under medical supervision.
The dose should be individualized according to symptom response and tolerability. Patients should not increase or decrease their dose independently.
Uses
Tamsulosin is primarily used for:
- Treatment of signs and symptoms of benign prostatic hyperplasia.
- Improvement of urinary flow associated with prostate-related bladder outlet obstruction.
- Reduction of symptoms such as weak urine stream, difficulty initiating urination, urinary frequency, urgency, and incomplete bladder emptying.
- Tamsulosin works by relaxing smooth muscle in the prostate and bladder neck. It does not treat prostate cancer and is not indicated for hypertension.
Tamsulosin side effects
Common tamsulosin side effects include dizziness, abnormal ejaculation, headaches, nasal congestion, fatigue, back pain, and diarrhea. The reason for abnormal ejaculation or lack of ejaculation may be associated with the effect of the drug on smooth muscles responsible for this function.
It is especially important to pay attention to dizziness and orthostatic symptoms, as they can increase the risk of falling. Patients with serious cases of dizziness, fainting, or significant fatigue should consult a healthcare professional.
Tamsulosin can sometimes lead to hypotension and syncope. The risk increases when it is taken in combination with other drugs that lower blood pressure, including some PDE-5 inhibitors, used to treat erectile dysfunction. Patients should follow their healthcare professional’s instructions regarding these medications.
Tamsulosin is also linked to intraoperative floppy iris syndrome. This condition may arise in patients undergoing cataract surgery even if they have stopped taking tamsulosin. That is why patients should inform their eye surgeon about their taking of this drug. Allergic reactions to tamsulosin are quite rare and may manifest in the form of rash, itching, hives, swelling, or difficulty breathing.
Priapism is an uncommon side effect. An erection that is either too long or too painful needs prompt medical attention to avoid erectile dysfunction. Drug-drug interaction is an issue to consider. Tamsulosin is a drug mainly metabolized by CYP3A4 and CYP2D6, and thus drugs that may block the action of these enzymes increase the levels of tamsulosin. As indicated by the FDA label, tamsulosin interacts significantly with potent inhibitors of CYP3A4 enzymes, such as ketoconazole. Combination with another alpha-blocker is also not recommended.
Key insight:
Astellas Korea launched Vesomni CR, a new fixed-dose combination therapy designed to simplify the treatment of benign prostatic hyperplasia and overactive bladder. Vesomni CR is a once-daily tablet that combines 0.4 mg of tamsulosin hydrochloride and 6 mg of solifenacin succinate.
