Effexor and Talwin drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Effexor (venlafaxine hydrochloride) and Talwin (pentazocine lactate). Common drug interactions include headache among females and back pain among males.

The phase IV clinical study analyzes what interactions people have when they take Effexor and Talwin. It is created by eHealthMe based on reports of 50 people who take the same drugs from the FDA, and is updated regularly.

What is Effexor?

Effexor has active ingredients of venlafaxine hydrochloride. It is often used in depression. eHealthMe is studying from 99,493 Effexor users. Check the latest studies of Effexor.

What is Talwin?

Talwin has active ingredients of pentazocine lactate. It is often used in pain. eHealthMe is studying from 893 Talwin users. Check the latest studies of Talwin.

On Jul, 13, 2026

50 people who take Effexor and Talwin together, and have interactions are studied.

What are the common drug interactions of Effexor and Talwin, by gender? *:

female:

Headache (pain in head)
Hyperhidrosis (abnormally increased sweating)
Bone disorder
Bone loss
Breast cancer recurrent
Burning sensation
Cervical dysplasia (abnormal changes in the cells on the surface of the cervix)
Corneal deposits
Cystitis bacterial (inflammation of the wall of the bladder by bacteria escherichia coli)
Decreased interest

male:

Back pain
Headache (pain in head)
Arthralgia (joint pain)
Bacterial test positive
Bipolar disorder (mood disorder)
Blood cholesterol increased
Bone disorder
Bone loss
Breast cancer recurrent
Burning sensation

What are the common drug interactions of Effexor and Talwin, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Chest discomfort
Cogwheel rigidity (tension in a muscle which gives way in little jerks when the muscle is stretched)
Coma (state of unconsciousness lasting more than six hours)
Complex partial seizures (epileptic seizure)
Conjunctivitis (pink eye)
Contusion (a type of hematoma of tissue in which capillaries)
Cough
Dysarthria (speech disorder)
Facial palsy (paralysis of face nerve)
Fall

40-49:

Drug hypersensitivity
Alopecia (absence of hair from areas of the body)
Back pain
Bone disorder
Bone loss
Breast cancer recurrent
Burning sensation
Cervical dysplasia (abnormal changes in the cells on the surface of the cervix)
Corneal deposits
Cystitis bacterial (inflammation of the wall of the bladder by bacteria escherichia coli)

50-59:

Drug hypersensitivity
Transaminases increased
Fall
Tardive dyskinesia (a disorder that involves involuntary movements)
Back pain
Bacterial test positive
Chronic kidney disease
Coagulopathy (blood's ability to clot is impaired)
Cough
Decreased appetite

60+:

Drug hypersensitivity
Drug ineffective
Breast discharge
Cardio-respiratory arrest (sudden dysfunction of heart and lungs)
Coronary artery bypass
Hypersensitivity
Hypertension (high blood pressure)
Ischaemic cardiomyopathy (weakness in the muscle of the heart due to inadequate oxygen delivery to the myocardium with coronary artery disease)
Social avoidant behaviour (avoiding social connection a personality disorder)
Decreased appetite

What are the existing conditions these people have? *

Stress And Anxiety: 4 people, 8.00%
Sleep Disorder: 4 people, 8.00%
Schizophrenia (a mental disorder characterized by a breakdown of thought processes): 4 people, 8.00%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 3 people, 6.00%
Insomnia (sleeplessness): 3 people, 6.00%
High Blood Pressure: 3 people, 6.00%
Breast Cancer: 3 people, 6.00%
Back Pain: 3 people, 6.00%

* Approximation only. Some reports may have incomplete information.

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