Phenelzine: Side Effects, Uses & Monitoring
Phenelzine Sulfate Tablets, USP has been found to be effective in depressed patients clinically characterized as “atypical,” “nonendogenous,” or “neurotic.” These patients often have mixed anxiety and depression and phob
- Data source
- FDA labeling via NIH DailyMed (label b7ec6ae7…)
- Label version
- current
- Last reviewed
- 2026
Reported adverse reactions
Reactions listed in current FDA labeling, with the highest frequency reported across summarized placebo-controlled trials.
No structured frequency data available in current labeling. Consult the official label.
Labeled uses (from FDA prescribing information)
Phenelzine Sulfate Tablets, USP has been found to be effective in depressed patients clinically characterized as “atypical,” “nonendogenous,” or “neurotic.” These patients often have mixed anxiety and depression and phobic or hypochondriacal features. There is less conclusive evidence of its usefulness with severely depressed patients with endogenous features. Phenelzine Sulfate Tablets should rarely be the first antidepressant drug used. Rather, it is more suitable for use with patients who have failed to respond to the drugs more commonly used for these conditions.
Conditions associated with Phenelzine in labeling
Anxiety Disorder
A group of mental health conditions characterized by excessive worry, fear, or nervousness that interferes wit...
Depression
A common but serious mood disorder causing persistent sadness, loss of interest, and changes in sleep, appetit...
Generalized Anxiety Disorder
Persistent, excessive worry about everyday situations that is difficult to control and interferes with daily l...
Frequently Asked Questions
What is Phenelzine used for?
FDA labeling lists the approved uses shown above under "Labeled uses." This summary is informational; only a qualified prescriber can determine whether a medication is appropriate for you.
What are the most commonly reported side effects of Phenelzine?
Current labeling for this ingredient does not include a structured frequency table that we can reproduce. Review the official label linked below.
Does Phenelzine require lab monitoring?
Monitoring needs vary. Ask your healthcare provider whether any lab tests apply while taking Phenelzine.
Where does this information come from?
All clinical facts on this page were extracted from the current FDA-registered product labeling for this ingredient, published by manufacturers through NIH DailyMed. See the source link below.
Medical disclaimer: Educational content extracted from public FDA labeling. Not medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.