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

Summary:

Drug interactions are reported among people who take Infergen (interferon alfacon-1) and Effexor (venlafaxine hydrochloride). Common drug interactions include vomiting among females and anaemia among males.

The phase IV clinical study analyzes what interactions people have when they take Infergen and Effexor. It is created by eHealthMe based on reports of 30 people who take the same drugs from the FDA, and is updated regularly.

What is Infergen?

Infergen has active ingredients of interferon alfacon-1. eHealthMe is studying from 766 Infergen users. Check the latest studies of Infergen.

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.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 27, 2026

30 people who take Infergen and Effexor together, and have interactions are studied.

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

female:

Vomiting
Weight decreased
Ammonia increased
Balance disorder
Blood potassium decreased
Cough
Dry eye (lack of adequate tears)
Dry mouth
Dry skin
Fibromyalgia (a long-term condition which causes pain all over the body)

male:

Anaemia (lack of blood)
Abnormal behaviour
Cellulitis (infection under the skin)
Coma (state of unconsciousness lasting more than six hours)
Confusional state
Disorientation (disability in which the senses of time, direction, and recognition of people and places)
Dyskinesia (abnormality or impairment of voluntary movement)
Dyspnoea (difficult or laboured respiration)
Haematocrit decreased
Haemoglobin decreased

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

Abnormal behaviour
Anaemia (lack of blood)
Catatonia (unresponsive to external stimuli)
Neuroleptic malignant syndrome (a life-threatening neurological disorder most often caused by an adverse reaction to neuroleptic or antipsychotic agents)
Panic attack
Bipolar disorder (mood disorder)
Blood creatine phosphokinase increased
Blood thyroid stimulating hormone increased
Cellulitis (infection under the skin)
Coma (state of unconsciousness lasting more than six hours)

50-59:

Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves)
Peripheral coldness
Restlessness (not able to rest)
Road traffic accident
Sepsis (a severe blood infection that can lead to organ failure and death)
Tooth disorder (tooth disease)
Urinary tract infection
Withdrawal syndrome (a discontinuation syndrome is a set of symptoms occurred due to discontinuation of substance)
Nausea (feeling of having an urge to vomit)
Asthenia (weakness)

60+:

Anaemia (lack of blood)
Arthralgia (joint pain)
Gastrooesophageal reflux disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)
Headache (pain in head)
Hyperhidrosis (abnormally increased sweating)
Insomnia (sleeplessness)
Myalgia (muscle pain)
Nausea (feeling of having an urge to vomit)
Neutropenia (an abnormally low number of neutrophils)
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)

What are the existing conditions these people have? *

Hepatitis C: 24 people, 80.00%

* Approximation only. Some reports may have incomplete information.

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