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pindolol

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Brand names: Visken

Beta-Blocker with ISA Rx

Pindolol is a medicine that lowers high blood pressure. It belongs to a class of drugs called beta-blockers.

Drug Shortage Alert

pindolol is currently listed as to be discontinued by the FDA. Affected manufacturer: Sun Pharmaceutical Industries, Inc..

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Drug Pricing (NADAC)

Generic Price

$0.79/unit

Generic Available

Yes (4 manufacturers)

Pricing data from NADAC (CMS), effective December 18, 2024. Compare all drug costs →

What it does

Pindolol treats high blood pressure.

Common side effects

Bizarre or many dreams, Dizziness, Fatigue

Key warnings

You should not take pindolol if you have asthma, heart failure, cardiogenic shock, second or third-degree heart block, or a very slow heart rate.

How It Works

Pindolol blocks the effects of certain natural chemicals in your body, like adrenaline. This helps to slow down your heart rate and lower your blood pressure. It also has some stimulating activity of its own.

How to Take It

Take pindolol tablets as your doctor tells you. The usual starting dose is 5 mg twice a day. You can take it with or without food. Your doctor may increase your dose every 3 to 4 weeks, up to 60 mg per day, if needed.

Pregnancy & Breastfeeding

Tell your doctor if you are pregnant or plan to become pregnant. It is not known if pindolol will harm your unborn baby. Talk to your doctor about the risks and benefits of taking pindolol while breastfeeding.

Missed Dose

If you miss a dose, take it as soon as you remember. If it is close to your next dose, skip the missed dose and continue with your regular schedule.

Storage

Store pindolol tablets at room temperature (68° to 77°F) away from light, in a tightly closed container, and out of reach of children.

Side Effects (from patient reports)

Based on 389 FDA adverse event reports.

The medicine is not working
51
Feeling tired
43
Feeling sick to your stomach
43
Bladder infection
42
Feeling lightheaded
41
The medicine is interacting with another medicine
40
Difficulty breathing
40
Falling down
31
Loose stools
30
Muscle breakdown
28

FDA Adverse Event Report Analysis

Detailed analysis of 774 reports from the FDA Adverse Event Reporting System (FAERS). Reports span 2004–2025.

Total Reports

774

Death-Related Reports

63

Hospitalization Reports

261

Top Indication

Product Used For Unknown Indication

Gender Distribution

Female 489 (66%)
Male 249 (34%)

Age Distribution

0–17 10
18–44 86
45–64 127
65–74 90
75+ 168

Most Reported Adverse Reactions (FAERS)

# Reaction Reports
1 DRUG INEFFECTIVE 51
2 FATIGUE 43
3 NAUSEA 43
4 URINARY TRACT INFECTION 42
5 DIZZINESS 41
6 DRUG INTERACTION 40
7 DYSPNOEA 40
8 FALL 31
9 DIARRHOEA 30
10 RHABDOMYOLYSIS 28
11 PAIN 26
12 HEADACHE 25
13 MUSCULAR WEAKNESS 24
14 MYALGIA 24
15 SEPSIS 24

Reactions in Death Reports

DEATH 19
COMPLETED SUICIDE 11
TOXICITY TO VARIOUS AGENTS 6
ACUTE KIDNEY INJURY 5
AGRANULOCYTOSIS 3
CARDIAC ARREST 3
DYSPNOEA 3
SEPTIC SHOCK 3
ANAEMIA 2
ARRHYTHMIA 2

Reactions in Hospitalization Reports

DRUG INTERACTION 26
RHABDOMYOLYSIS 21
FALL 18
PNEUMONIA 18
MUSCULAR WEAKNESS 15
URINARY TRACT INFECTION 15
DYSPNOEA 14
MYALGIA 13
CHROMATURIA 12
HYPOTENSION 12

Source: FDA FAERS (Adverse Event Reporting System) FDA FAERS (Adverse Event Reporting System) Reports are voluntary and do not establish causation

Serious Warnings

You should not take pindolol if you have asthma, heart failure, cardiogenic shock, second or third-degree heart block, or a very slow heart rate.

Known Drug Interactions

Pindolol has been used with a variety of antihypertensive agents, including hydrochlorothiazide, hydralazine, and guanethidine without unexpected adverse interactions.

Mechanism: These drugs are often used together to lower blood pressure without causing any unexpected problems. They work in different ways to help your heart and blood vessels.

What to do: This combination is considered safe to use. Continue taking both medications as directed by your healthcare provider.

Pindolol has been used with a variety of antihypertensive agents, including hydrochlorothiazide, hydralazine, and guanethidine without unexpected adverse interactions.

Mechanism: These two blood pressure medicines can be used together safely. They do not have any harmful interactions when taken at the same time.

What to do: You can take these medications together as prescribed. Your doctor will monitor your blood pressure to ensure the treatment is working.

Such patients may be unresponsive to the usual doses of epinephrine used to treat allergic reactions.

Mechanism: Pindolol can block the action of epinephrine, which is used to treat severe allergic reactions. This means the usual dose of epinephrine might not work as well as it should.

What to do: Tell your doctor you are taking pindolol if you have a history of severe allergies. You may need a higher dose of epinephrine during an emergency.

Drug Interactions Reduced cytochrome P450 2D6 isozyme activity, drugs which inhibit this isozyme (e.g., fluoxetine and paroxetine), and certain other drugs (e.g., fluvoxamine, propranolol, and pindolol) appear to appreciably inhibit the metabolism of thioridazine. Pindolol Concurrent administration of pindolol and thioridazine have resulted in moderate, dose related increases in the serum levels of thioridazine and two of its metabolites, as well as higher than expected serum pindolol levels. Pindolol and thioridazine should not be coadministered.

Mechanism: These two drugs block each other from being cleared out of your system. This leads to higher levels of both drugs in your blood than your doctor intended.

What to do: You should not take these two medications at the same time. Ask your doctor for a safer combination of medicines.

Common Questions

How quickly will pindolol lower my blood pressure?
You may see some effect within the first week. It may take up to 2 weeks or longer to see the full effect.
Can I stop taking pindolol suddenly?
Talk to your doctor before stopping pindolol. Stopping suddenly can cause problems.
Will pindolol affect my ability to exercise?
Pindolol can lower your heart rate, so you may not be able to exercise as intensely. Talk to your doctor about safe exercise levels.
Can I drink alcohol while taking pindolol?
Alcohol can lower your blood pressure, which could increase the effect of pindolol. Talk to your doctor about drinking alcohol while taking this medicine.
Does pindolol interact with other medications?
Yes, pindolol can interact with other medications. Tell your doctor about all the medicines you take, including over-the-counter drugs and supplements.
What should I do if I feel dizzy while taking pindolol?
If you feel dizzy, sit or lie down. Avoid sudden changes in position.
Can pindolol cause weight gain?
Weight gain is a possible side effect, but it is not common.
Will pindolol cure my high blood pressure?
Pindolol helps to control high blood pressure, but it is usually not a cure. You may need to take it long-term.
Can pindolol cause depression?
Depression is a possible side effect, but it is not common. Tell your doctor if you experience changes in your mood.
What if my allergies get worse while taking Pindolol?
While taking beta blockers, patients with a history of severe allergic reaction may be more reactive to repeated exposure. Such patients may not respond to standard doses of epinephrine.
What are the common side effects of pindolol?
The most commonly reported side effects of pindolol include Bizarre or many dreams, Dizziness, Fatigue, Insomnia, Nervousness. Based on 389 FDA adverse event reports. Always consult your healthcare provider about potential side effects.
Does pindolol interact with other medications?
Yes, pindolol has 4 known drug interactions. Notable interactions include hydrochlorothiazide, hydralazine, epinephrine. Always inform your doctor about all medications you are taking.
What drug class is pindolol?
pindolol belongs to the Beta-Blocker with ISA drug class. It requires a prescription (Rx). Pindolol treats high blood pressure.
Is pindolol safe during pregnancy?
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if pindolol will harm your unborn baby. Always consult your healthcare provider before using any medication during pregnancy or breastfeeding.
Is pindolol currently in shortage?
Yes, pindolol is currently listed as to be discontinued by the FDA. Affected manufacturer: Sun Pharmaceutical Industries, Inc.. Visit the FDA Drug Shortages database for the latest updates.

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What the FDA Data Shows for pindolol

The FDA label for pindolol (sold under brand names such as Visken) classifies it as a prescription-only medication in the Beta-Blocker with ISA class. Pindolol treats high blood pressure. Official labeling lists 10 commonly reported side effects, including Bizarre or many dreams, Dizziness, Fatigue.

Post-market surveillance from the FDA Adverse Event Reporting System (FAERS) captures real-world experience. For this drug, FAERS contains 389 voluntary reports. The database also lists 4 documented drug interactions derived from FDA labeling, with the top-flagged interaction rated minor severity. NADAC pricing from CMS shows a generic unit cost of $0.79.

Report counts do not establish causation — a FAERS entry documents a temporal association, not proof that the drug produced the outcome. Widely prescribed medications naturally accumulate more reports than niche therapies, so raw totals must be interpreted alongside total exposure. Shortage status, recall history, and patent information further shape supply and switching decisions. This page summarizes public FDA data for educational purposes only and is not a substitute for professional medical advice — always consult a licensed healthcare provider before starting, stopping, or changing any medication.

Data Sources

Drug labeling: FDA Drug Labels (SPL/DailyMed). Adverse events: FDA Adverse Event Reporting System (FAERS). Pricing: CMS National Average Drug Acquisition Cost (NADAC). Shortage status: FDA Drug Shortages Database.

FAERS reports are voluntary and do not establish causation. Drug interactions are derived from FDA labeling and clinical references. Always consult a healthcare professional before making medication decisions.

Last updated: October 9, 2025

All federal data sources used on this page