Pratsiol
Prazosin lowers high blood pressure and helps with urination problems caused by an enlarged prostate.
Form
tabletti
Strength
2 mg
Active Ingredient
Prazosin hydrochloride
Manufacturer
Orion Corporation
How to Use
Dosage
Your doctor will tell you your dose, usually starting with a small dose (e.g., 0.5 mg) two to three times a day.
Method
Take the medicine with plenty of fluid, such as a glass of water. It's best to take the first dose in the evening before bed.
Important
Your doctor will determine your maximum daily dose; never exceed it.
Possible Side Effects
COMMON
- •Pounding heart (palpitations)
- •Shortness of breath, stuffy nose
- •Stomach problems (nausea, vomiting, diarrhea, constipation), dry mouth
- •Headache, dizziness, lightheadedness, tiredness, feeling weak
- •Feeling down, nervousness
- •Rash
- •Frequent need to urinate
- •Vision problems
- •Low blood pressure when standing up
RARE
- •Joint pain
- •Increased sweating, itching
- •Sleep problems
- •Red eyes
- •Ringing in ears (tinnitus)
- •Numbness or tingling
- •Chest pain
- •Abdominal pain
- •Nosebleeds
- •Impotence
- •Allergic reactions
- •Seeing or hearing things that aren't there (hallucinations)
- •Fainting, swelling
- •Inflammation of the pancreas (pancreatitis)
- •Abnormal liver test results
- •Unusual hair loss or thinning, skin rash (lichen planus)
- •Difficulty controlling urine (incontinence)
- •Long-lasting and/or painful erection
Important Warnings
- Do not take if you are allergic to prazosin or any other ingredients in this medicine (quinazolines).
- Talk to your doctor if you have chest pain during exercise, heart failure, or kidney or liver disease.
- Tell your doctor if you have narcolepsy (a sleep disorder) or circulation problems in your brain.
- If you are having cataract surgery, tell your eye doctor that you are taking or have taken Pratsiol.
- At the start of treatment, especially in older people, you might feel dizzy or lightheaded. Take your first dose in the evening to help prevent this.
Show 5 more warnings
- Not recommended for children and adolescents under 18 years of age.
- Tell your doctor about all other medicines you are taking, as Pratsiol can increase their blood pressure-lowering effect.
- Physical exertion, heat, alcohol, and certain erectile dysfunction medicines can increase the effect of Pratsiol and lower blood pressure too much.
- Generally not recommended during pregnancy or breastfeeding. Ask your doctor for advice.
- May cause tiredness and dizziness at the start of treatment. Avoid driving and tasks requiring concentration until you know how the medicine affects you.
Use in Elderly Patients
Category D
Avoid use in older adults. A significant adverse effect is orthostatic hypotension. Consider potential significant interactions. (updated 19.5.2025)