What is the difference between ALFUZOSIN HYDROCHLORIDE and TERAZOSIN?

ALFUZOSIN HYDROCHLORIDE and TERAZOSIN are both Alpha Blockers, so they work through the same broad mechanism. They differ in dosing, half-life, side-effect frequency, and how individual patients tolerate them. See the head-to-head sections below for the specifics.

Is Alfuzosin Hydrochloride the same as Terazosin?

No. Alfuzosin Hydrochloride (ALFUZOSIN HYDROCHLORIDE) and Terazosin (TERAZOSIN) are distinct medications. They are sometimes confused because of similar branding or because they treat overlapping conditions, but they have different active ingredients and different safety profiles.

Which has fewer side effects, ALFUZOSIN HYDROCHLORIDE or TERAZOSIN?

Side-effect frequency varies by individual. The side-effect comparison section on this page shows FAERS-reported events for each drug side by side. FAERS is voluntary reporting, so it reflects what patients and clinicians chose to report, not absolute population risk.

Can I switch from ALFUZOSIN HYDROCHLORIDE to TERAZOSIN?

Switching medications should always be done under prescriber supervision. The "patient stories" section on this page includes accounts from people who have made the switch and what their transition felt like, but those are individual experiences, not protocols.

ALFUZOSIN HYDROCHLORIDE vs TERAZOSIN

Compare ALFUZOSIN HYDROCHLORIDE (Alfuzosin Hydrochloride) and TERAZOSIN (Terazosin) — clinical data, side effects, and patient experiences.

ALFUZOSIN HYDROCHLORIDE

Alfuzosin Hydrochloride · Alpha Blocker

How it works

12.1 Mechanism of Action Alfuzosin is a selective antagonist of post-synaptic alpha 1 -adrenoreceptors, which are located in the prostate, bladder base, bladder neck, prostatic cap...

Approved for

1 INDICATIONS AND USAGE Alfuzosin hydrochloride extended-release tablets

USP are indicated for the treatment of signs and symptoms of benign prostatic hyperplasia. Alfuzosin hydrochloride extended-release tablet is an alpha adrenergic antagonist

8.4

12.3 ) 1.1 Important Limitations of Use Alfuzosin hydrochloride extended-release tablets

OralTablet

TERAZOSIN

Terazosin · Alpha Blocker

How it works

Pharmacodynamics A. Benign Prostatic Hyperplasia (BPH) The symptoms associated with BPH are related to bladder outlet obstruction, which is comprised of two underlying components: ...

Approved for

INDICATIONS AND USAGE Terazosin capsules are indicated for the treatment of symptomatic benign prostatic hyperplasia (BPH). There is a rapid response

OralTablet

Quick Comparison

ALFUZOSIN HYDROCHLORIDETERAZOSIN

Drug Class

Alpha Blocker

Route

Oral

Half-Life

—

FDA Approved

—

Side Effect Frequency Comparison

Estimated frequency (%) based on clinical trial data

Side Effects

ALFUZOSIN HYDROCHLORIDE

Dizziness

>10%

Drug Not Working

>10%

Fatigue

1-10%

Shortness of Breath

1-10%

Weakness

1-10%

Diarrhea

1-10%

Falls

1-10%

Nausea

1-10%

TERAZOSIN

Drug Not Working

1-10%

Fatigue

1-10%

Shortness of Breath

1-10%

Diarrhea

1-10%

Dizziness

1-10%

Weakness

1-10%

Falls

1-10%

Nausea

1-10%

FDA Warnings

ALFUZOSIN HYDROCHLORIDE

5 WARNINGS AND PRECAUTIONS Postural hypotension/syncope: Care should be taken in patients with symptomatic hypotension or who have had a hypotensive response to other medications or are concomitantly treated with antihypertensive medication or nitrates ( 5
There may be an increased risk of hypotension/postural hypotension and syncope when taking alfuzosin hydrochloride extended-release tablets concomitantly with anti-hypertensive medication and nitrates
3 Patients with Hepatic Impairment Alfuzosin hydrochloride extended-release tablets are contraindicated for use in patients with moderate or severe hepatic impairment [ see Contraindications ( 4 ), Use in Specific Populations ( 8
4 Drug-Drug Interactions Potent CYP3A4 Inhibitors Alfuzosin hydrochloride extended-release tablets are contraindicated for use with potent CYP3A4 inhibitors (e

TERAZOSIN

WARNINGS Syncope and "First-dose" Effect Terazosin capsules, like other alpha-adrenergic blocking agents, can cause marked lowering of blood pressure, especially postural hypotension, and syncope in association with the first dose or first few days of therapy
The risk of the events is greatest during the initial seven days of treatment, but continues at all time intervals
Because this condition can lead to permanent impotence if not promptly treated, patients must be advised about the seriousness of the condition (see PRECAUTIONS : Information for Patients )

Clinical Trial Data

No head-to-head clinical studies found for ALFUZOSIN HYDROCHLORIDE vs TERAZOSIN.

ALFUZOSIN HYDROCHLORIDE vs TERAZOSIN: What You Should Know

Key Differences

Both ALFUZOSIN HYDROCHLORIDE and TERAZOSIN belong to the Alpha Blocker class. While they share a similar mechanism of action, differences in pharmacokinetics, dosing, and side effect profiles may make one more suitable than the other for individual patients.

Safety Considerations

ALFUZOSIN HYDROCHLORIDE carries 4 FDA warnings. TERAZOSIN carries 3 FDA warnings. Patients should discuss all warnings and contraindications with their healthcare provider before starting or switching medications..

This comparison is for informational purposes only. Always consult a qualified healthcare professional before making medication decisions.

Related Comparisons

TAMSULOSIN HYDROCHLORIDE vs TERAZOSIN→ALFUZOSIN HYDROCHLORIDE vs TAMSULOSIN HYDROCHLORIDE→TERAZOSIN vs TERAZOSIN HYDROCHLORIDE→ALFUZOSIN HYDROCHLORIDE vs TERAZOSIN HYDROCHLORIDE→DOXAZOSIN vs TERAZOSIN→ALFUZOSIN HYDROCHLORIDE vs DOXAZOSIN→

Primary sources

Every figure on this comparison links back to its primary source. See data sources and methodology for the full provenance trail.

ALFUZOSIN HYDROCHLORIDE: DailyMed label · FAERS adverse events · ClinicalTrials.gov
TERAZOSIN: DailyMed label · FAERS adverse events · ClinicalTrials.gov

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ALFUZOSIN HYDROCHLORIDE vs TERAZOSIN

Compare ALFUZOSIN HYDROCHLORIDE (Alfuzosin Hydrochloride) and TERAZOSIN (Terazosin) — clinical data, side effects, and patient experiences.

ALFUZOSIN HYDROCHLORIDE

Alfuzosin Hydrochloride · Alpha Blocker

How it works

12.1 Mechanism of Action Alfuzosin is a selective antagonist of post-synaptic alpha 1 -adrenoreceptors, which are located in the prostate, bladder base, bladder neck, prostatic cap...

Approved for

1 INDICATIONS AND USAGE Alfuzosin hydrochloride extended-release tablets

USP are indicated for the treatment of signs and symptoms of benign prostatic hyperplasia. Alfuzosin hydrochloride extended-release tablet is an alpha adrenergic antagonist

8.4

12.3 ) 1.1 Important Limitations of Use Alfuzosin hydrochloride extended-release tablets

OralTablet

TERAZOSIN

Terazosin · Alpha Blocker

How it works

Pharmacodynamics A. Benign Prostatic Hyperplasia (BPH) The symptoms associated with BPH are related to bladder outlet obstruction, which is comprised of two underlying components: ...

Approved for

INDICATIONS AND USAGE Terazosin capsules are indicated for the treatment of symptomatic benign prostatic hyperplasia (BPH). There is a rapid response

OralTablet

Quick Comparison

ALFUZOSIN HYDROCHLORIDETERAZOSIN

Drug Class

Alpha Blocker

Route

Oral

Half-Life

—

FDA Approved

—

Side Effect Frequency Comparison

Estimated frequency (%) based on clinical trial data

Side Effects

ALFUZOSIN HYDROCHLORIDE

Dizziness

>10%

Drug Not Working

>10%

Fatigue

1-10%

Shortness of Breath

1-10%

Weakness

1-10%

Diarrhea

1-10%

Falls

1-10%

Nausea

1-10%

TERAZOSIN

Drug Not Working

1-10%

Fatigue

1-10%

Shortness of Breath

1-10%

Diarrhea

1-10%

Dizziness

1-10%

Weakness

1-10%

Falls

1-10%

Nausea

1-10%

FDA Warnings

ALFUZOSIN HYDROCHLORIDE

5 WARNINGS AND PRECAUTIONS Postural hypotension/syncope: Care should be taken in patients with symptomatic hypotension or who have had a hypotensive response to other medications or are concomitantly treated with antihypertensive medication or nitrates ( 5
There may be an increased risk of hypotension/postural hypotension and syncope when taking alfuzosin hydrochloride extended-release tablets concomitantly with anti-hypertensive medication and nitrates
3 Patients with Hepatic Impairment Alfuzosin hydrochloride extended-release tablets are contraindicated for use in patients with moderate or severe hepatic impairment [ see Contraindications ( 4 ), Use in Specific Populations ( 8
4 Drug-Drug Interactions Potent CYP3A4 Inhibitors Alfuzosin hydrochloride extended-release tablets are contraindicated for use with potent CYP3A4 inhibitors (e

TERAZOSIN

WARNINGS Syncope and "First-dose" Effect Terazosin capsules, like other alpha-adrenergic blocking agents, can cause marked lowering of blood pressure, especially postural hypotension, and syncope in association with the first dose or first few days of therapy
The risk of the events is greatest during the initial seven days of treatment, but continues at all time intervals
Because this condition can lead to permanent impotence if not promptly treated, patients must be advised about the seriousness of the condition (see PRECAUTIONS : Information for Patients )

Clinical Trial Data

No head-to-head clinical studies found for ALFUZOSIN HYDROCHLORIDE vs TERAZOSIN.

ALFUZOSIN HYDROCHLORIDE vs TERAZOSIN: What You Should Know

Key Differences

Safety Considerations

This comparison is for informational purposes only. Always consult a qualified healthcare professional before making medication decisions.