acamprosate vs trazodone

PlainMeds reviewed this comparison against our methodology in August 2026. It places FDA and CMS record fields side by side, without recommending either medication.

Side-by-side comparison of acamprosate and trazodone. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

Drug Class
acamprosate GABA Analog (Alcohol Dependence)
trazodone Serotonin Antagonist and Reuptake Inhibitor (SARI)
Type
acamprosate Prescription
trazodone Prescription
Summary
acamprosate

Acamprosate is a medicine that can help you stay away from alcohol if you are alcohol-dependent and have already stopped drinking. It should be used with counseling and support.

trazodone

Trazodone is a medicine used to treat depression. It helps to improve your mood and can help you sleep better.

What It Treats
acamprosate

Acamprosate helps people who are alcohol-dependent to not drink alcohol. You must have already stopped drinking before you start taking acamprosate. This medicine works best when it is part of a complete treatment plan that includes counseling and support.

trazodone

Trazodone is used to treat major depressive disorder (MDD) in adults. This medicine can help improve your mood and reduce symptoms of depression. Talk to your doctor if you have any questions about why you are taking this medication.

How It Works
acamprosate

Acamprosate is similar to a natural substance in your brain. It is thought to work by helping to restore the normal balance of brain activity that is changed by long-term alcohol use. This can reduce your craving for alcohol.

trazodone

Trazodone is a selective serotonin reuptake inhibitor (SSRI). It works by increasing the amount of serotonin in your brain. Serotonin is a chemical that helps regulate mood.

Common Side Effects
acamprosate
  • Accidental injury
  • Weakness
  • Pain
  • Loss of appetite
  • Diarrhea
trazodone
  • Swelling
  • Blurred vision
  • Fainting
  • Drowsiness
  • Tiredness
FAERS Reports
acamprosate
  • Hypotension 14
  • Asthenia 13
  • Condition Aggravated 13
  • Acute Kidney Injury 12
  • Coma 12
trazodone
  • Fatigue 1,129
  • Nausea 1,097
  • Headache 909
  • Pain 808
  • Diarrhoea 793
Serious Warnings
acamprosate

Acamprosate may increase the risk of suicidal thoughts or actions. Your doctor should watch you for depression or suicidal thoughts. Tell your doctor right away if you have any new or worsening symptoms of depression or suicidal thoughts.

trazodone

Antidepressants may increase the risk of suicidal thoughts and behaviors in young adults. Your doctor will monitor you closely for worsening depression or suicidal thoughts. Trazodone is not approved for use in children.

Pregnancy
acamprosate

Acamprosate may harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if acamprosate passes into breast milk. Talk to your doctor if you are breastfeeding.

trazodone

Tell your doctor if you are pregnant or plan to become pregnant. It is important to consider the risk of untreated depression during pregnancy. There is a pregnancy registry to monitor outcomes in women exposed to antidepressants during pregnancy. You can register by calling 1-844-405-6185.

How to Read This acamprosate vs trazodone Comparison

acamprosate is classified in the GABA Analog (Alcohol Dependence) drug class, while trazodone sits within the Serotonin Antagonist and Reuptake Inhibitor (SARI) class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, acamprosate has 64 submissions while trazodone has 4,736. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for acamprosate or trazodone.

Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.