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Protriptyline Side Effects

The most commonly reported side effects of protriptyline include depression, fall, and sleep apnoea syndrome, based on 675 FDA adverse event reports from 2004 to 2025. 5.2% of reports found the drug to be ineffective.

Protriptyline side effects

Percentages show how often each reaction appears relative to total reports for protriptyline.

1
Depression5.3%36
2
Drug Ineffective5.2%35
3
Fall4.7%32
4
Sleep Apnoea Syndrome4.4%30
5
Fatigue4.3%29
6
Hypertension4.1%28
7
Anxiety3.7%25
8
Condition Aggravated3.7%25
9
Insomnia3.7%25
10
Somnolence3.6%24
11
Weight Decreased3.4%23
12
Vomiting3.4%23
13
Nausea3.3%22
14
Headache3.1%21
15
Intentional Product Use Issue3.1%21

These are voluntary reports and do not establish that protriptyline caused these reactions.

Report severity

56.6%Serious382 reports
19.7%Hospitalizations133 reports
3.1%Fatal21 reports

Seriousness is determined by the reporter, not by OpenClaim.

Protriptyline drug interactions

Other drugs that appear in adverse event reports alongside protriptyline. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.

Also suspected

1
Sodium-oxybate65.0%439
2
Acetaminophen3.0%20
3
Venlafaxine2.7%18
4
Calcium-oxybate2.5%17
5
Magnesium-oxybate2.5%17
6
Potassium-oxybate2.5%17
7
Fluoxetine-hydrochloride2.4%16
8
Bupropion2.2%15
9
Dextroamphetamine2.1%14
10
Methylphenidate2.1%14
11
Modafinil1.8%12
12
Quetiapine-fumarate1.6%11
13
Sertraline-hydrochloride1.5%10
14
Amphetamine1.5%10
15
Olanzapine1.3%9

Taken alongside

1
Modafinil26.8%181
2
Ergocalciferol23.1%156
3
Dextroamphetamine22.2%150
4
Acetaminophen21.6%146
5
Methylphenidate18.7%126
6
Aspirin17.5%118
7
Amphetamine16.3%110
8
Gabapentin15.1%102
9
Armodafinil15.1%102
10
Ibuprofen13.3%90
11
Omeprazole13.2%89
12
Levothyroxine-sodium12.3%83
13
Hydrochlorothiazide12.3%83
14
Hydrocodone11.9%80
15
Metformin11.9%80

Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.

Who reports protriptyline side effects

67.1% of protriptyline adverse event reports involve female patients and 29.6% involve male patients. The largest age group is adult at 72%. These figures reflect who reports side effects, not underlying risk.

Sex

Female67.1%
Male29.6%
Unknown3.3%

Age group

< 20.3%
2–111.0%
12–172.9%
18–6472.1%
65+23.7%

What is protriptyline used for

Conditions and purposes for which patients were taking protriptyline when the adverse event was reported.

Antidepressant TherapyAnxietyAnxietyBipolar DisorderBlood Pressure MeasurementCataplexyChronic Fatigue SyndromeCoughCataplexyDepressed Level Of ConsciousnessDepressionDrug Use For Unknown IndicationDepressionFibromyalgiaGastric Ulcer

Showing 15 of 36 indications

Protriptyline brand names and reporting trend

Protriptyline is sold under the brand name Protriptyline Hydrochloride.

Brand names

Protriptyline Hydrochloride2

Quarterly reports (20042025)

20052010201520202025

An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.

Taking protriptyline with another medication?

Ask OpenClaim about your specific drug combination. Get a sourced report using FDA data, drug labels, and medical literature.