Vitamin b and Duopa drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Vitamin b (l - carnitine) and Duopa (carbidopa; levodopa). Common drug interactions include pruritus allergic among females and asthenia among males.

The phase IV clinical study analyzes what interactions people have when they take Vitamin b and Duopa. It is created by eHealthMe based on reports of 66 people who take the same drugs from the FDA, and is updated regularly.

What is Vitamin b?

Vitamin b has active ingredients of l - carnitine. It is often used in fatigue. eHealthMe is studying from 13,272 Vitamin b users. Check the latest studies of Vitamin b.

What is Duopa?

Duopa has active ingredients of carbidopa; levodopa. eHealthMe is studying from 8,208 Duopa users. Check the latest studies of Duopa.

On Jul, 18, 2026

66 people who take Vitamin b and Duopa together, and have interactions are studied.

What are the common drug interactions of Vitamin B and Duopa, by gender? *:

female:

Pruritus allergic (severe allergic itching of the skin)
Trigeminal neuralgia (a painful condition of the nerve responsible for most facial sensation)
Arthralgia (joint pain)
Bedridden
Cataract (clouding of the lens inside the eye)
Device dislocation
Dyskinesia (abnormality or impairment of voluntary movement)
Foot deformity (functional disability of foot)
Hypoaesthesia (reduced sense of touch or sensation)
Joint injury

male:

Asthenia (weakness)
Urinary tract infection
Rehabilitation therapy
Hypophagia (reduced food intake)
Fall
Hypotension (abnormally low blood pressure)
Pneumonia
Pneumonia aspiration (bronchopneumonia that develops due to the entrance of foreign materials into the bronchial tree)
Abdominal distension
Abdominal pain upper

What are the common drug interactions of Vitamin B and Duopa, 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:

n/a

50-59:

Fungal infection
Oral herpes (viral infection of mouth)
Purulent discharge (discharge that contains pus)
Secretion discharge
Staphylococcal infection (an infection with staphylococcus bacteria)
Wound infection staphylococcal
Abdominal discomfort
Tremor (trembling or shaking movements in one or more parts of your body)

60+:

Weight decreased
Asthenia (weakness)
Fall
Insomnia (sleeplessness)
Balance disorder
Cerebrovascular accident (sudden death of some brain cells due to lack of oxygen when the blood flow to the brain is impaired by blockage or rupture)
Confusional state
Pain
Rehabilitation therapy
Abdominal pain upper

What are the existing conditions these people have? *

Parkinson's Disease: 35 people, 53.03%
High Blood Cholesterol: 9 people, 13.64%
Depression: 6 people, 9.09%
Sleep Disorder: 5 people, 7.58%
Pain: 5 people, 7.58%
Stress And Anxiety: 4 people, 6.06%
Hypersensitivity: 4 people, 6.06%

* Approximation only. Some reports may have incomplete information.

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