Harnal Ocas is a prescription medication that belongs to the Alpha-Adrenergic Blocker family. This medication works by relaxing the urinary bladder and prostate muscles so that urine can flow freely.

Use this medication precisely as recommended by your physician. Follow the prescription of your doctor carefully. 

The medication dose your physician has given is based on your condition, other medications or food supplements you may take, and your reaction to treatment. To diminish your risks for adverse effects, don’t increase your dosage, take it regularly, or take it as instructed by your physician. Adverse events may still happen even at usual prescription dosages. 

If your physician requests you to use this drug consistently, use it regularly to get the most benefits from it. To make you remember it better, take it at a fixed time every day. 

Your doctor may need to modify your dosages to ease your symptoms or if you develop adverse reactions. 

If you have any inquiries with regards to information, ask your physician or pharmacist.

Harnal OCAS is used in the following conditions:

  • symptoms of the lower urinary tract caused by an enlarged prostate (benign prostatic hyperplasia)

This medicine may be recommended for different uses. Approach your physician or pharmacist for more information.

Do not use Harnal OCAS in people with the following conditions:

  • Prostate problems
  • Prolonged and painful erection of penis
  • Low blood pressure
  • Small pupil syndrome
  • Sulfa allergy

Harnal OCAS may have the following side effects:

  • increased cough
  • insomnia
  • respiratory disorders
  • nausea
  • skin disorders
  • drowsiness
  • chest pain
  • dizziness
  • inflammation of the back of the throat (pharyngitis)
  • heart disorders
  • stomach or intestinal disorders
  • stuffy nose
  • prolonged erection of the penis (priapism)
  • tooth disorder
  • dry mouth
  • rash
  • small pupil syndrome (Intraoperative Floppy Iris Syndrome)
  • visual disturbance
  • irregular heartbeat
  • back pain
  • abnormal ejaculation
  • severe skin itching
  • inflammation of the sinuses (sinusitis)
  • loss of consciousness
  • diarrhea
  • hives
  • infection
  • headache
  • bleeding from the nasal cavity
  • decreased libido
  • blurred vision
  • skin peeling (skin desquamation)
  • decreased muscle strength

Keep in mind that your physician has recommended this drug since he or she has known that the advantage to you is more noteworthy than the risk of adverse reactions. Many individuals utilizing this medicine don’t have serious side effects.  

A serious allergy to this medication is uncommon. In any case, seek emergency medical help if you see any manifestations of a serious allergic response, including a rash, tingling or swelling particularly of the face or tongue or throat, dizziness or difficulty in breathing. 

This is not a complete list of side effects. If you see other effects not recorded above, contact your physician or pharmacist.


Take extra caution in patients with the following medical conditions:

  • patients taking alpha-blockers, sulpha medicines, anticoagulants, cimetidine and medicines used for treating erectile dysfunction or high blood pressure
  • planning to have cataract or glaucoma surgery
  • severe liver problem
  • dental surgery
  • prostate cancer
  • kidney problems
  • low blood pressure on standing up

Prior to taking this medicine, tell your physician or pharmacist if you are allergic to it, or if you have some other hypersensitivities. This drug may contain inert ingredients which can cause unfavorable side effects or different issues. Talk with your pharmacist for more information.


Harnal OCAS may interact with the following medicines:

  • Diclofenac
  • Cimetidine
  • Moderate and Strong Inhibitor of CYP3A4 or CYP2D6
  • Furosemide
  • Warfarin
  • Alpha Adrenergic Blocking Agents
  • Phosphodiesterase 5 Inhibitors (PDE5) Inhibitors

Inform your physician about the drugs you take including over-the-counter medications, prescribed drugs, supplements and vitamins. 

This is not a complete list of drug interactions. Approach your physician or pharmacist for more details. 

The effects of certain medications can change if you consume different medications or herbal products simultaneously. This can build your risk for side effects or may cause your drugs not to work effectively. These interactions are conceivable, yet don’t generally happen. Your physician or pharmacist can prevent or oversee interactions by changing how you utilize your prescriptions or by close checking. 

While utilizing this drug, don’t start, stop, or change the dose of other medicines you are using without your physician’s advice. 

Symptoms of overdose may include the following: 

  • low blood pressure

Seek medical help immediately. 

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