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Prescription Drug Coverage

Tamsulosin (Flomax) Medicare Coverage

You may be able to find Medicare plan options in your area that cover Tamsulosin or Flomax. Learn more about Tamsulosin and find Medicare Advantage plans in your area that cover prescription drugs.
Chemical name: Tamsulosin

Brand name: Flomax

Typical dosage: 0.4mg

Typical type: Capsule1

Tamsulosin is a medication used to treat benign prosthetic hyperplasia (BPH). It is available as a brand name or generic drug and is an oral capsule.

Tamsulosin is a medication typically used to treat benign prosthetic hyperplasia, or BPH. The brand name equivalent of Tamsulosin is called Flomax.

Tamsulosin is taken once daily. Tamsulosin blocks receptors in the prostate to lead to relaxation of the muscles in the bladder and prostate, which can improve urine flow and other symptoms of BPH.

The most common side effects of Tamsulosin include headache, back pain, diarrhea, dizziness, runny nose, throat irritation and fatigue.

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Does Medicare cover Tamsulosin or Flomax?

Yes! 100% of Medicare Advantage plans and Medicare Part D plans cover Tamsulosin.1

  • Medicare Advantage plans that offer prescription drug coverage are called Medicare Advantage Prescription Drug Plans (MA-PD). Most Medicare Advantage beneficiaries (88 percent) are enrolled in MA-PDs.2

  • Medicare prescription drugs plans each have their own formulary, or drug list, that details what prescription drugs are covered by the plan and how they are covered.

Drug coverage may vary based on plan availability. You may be able to find Medicare Advantage plan options in your area that cover Tamsulosin.

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You can also compare Part D prescription drug plans available where you live and enroll in a Medicare prescription drug plan online when you visit

Average costs for Tamsulosin with Medicare drug coverage1

Your copay and deductible costs for any prescription drug can vary depending on what coverage stage you’re in.

Deductible stage Typical copay stage
Your deductible is the amount of money you must spend on covered drugs before your Medicare drug coverage starts paying its share of costs.

In the deductible stage, you’re responsible for the full cost of your prescription drugs.

Some Medicare prescription drug plans have a $0 deductible. Medicare drug plans cannot have a deductible more than $480 in 2022.
After you meet your Part D deductible, you enter the initial coverage period.

During this phase (the typical copay stage), you pay a copayment (flat fee) or coinsurance (percentage) for your covered medications.
$2 – $18 $Free – $18

Additional information

For the most benefit, take Tamsulosin about 30 minutes following a meal at the same time every day. Swallow this medication whole; do not chew, open or crush.

Tell your doctor if you have any unusual chest pains while taking Tamsulosin. This medication can also cause a serious eye condition. It is important to talk to your doctor before having any cataract or other eye surgeries.

This medication can lower your blood pressure when you stand quickly. To lower the chance of getting dizzy or passing out, rise slowly if you have been sitting or lying down.



This article is for informational purposes only. It is not healthcare advice, treatment, or diagnosis. It is not an endorsement of or recommendation for this medication. Speak to your doctor or healthcare provider about your specific healthcare needs, including your prescription medications. Only take medication as directed by your doctor.

Coverage and costs of prescription medications will vary by Medicare plan. Not all plans are available in all areas.


Written by Hayden Gharibyar, Pharm.D.