B12 and Carnitor drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take B12 (cobalamin) and Carnitor (levocarnitine). Common drug interactions include increased appetite among females and overdose among males.

The phase IV clinical study analyzes what interactions people have when they take B12 and Carnitor. It is created by eHealthMe based on reports of 31 people who take the same drugs from the FDA, and is updated regularly.

What is B12?

B12 has active ingredients of cobalamin. It is often used in vitamin b12 deficiency. eHealthMe is studying from 121,894 B12 users. Check the latest studies of B12.

What is Carnitor?

Carnitor has active ingredients of levocarnitine. eHealthMe is studying from 894 Carnitor users. Check the latest studies of Carnitor.

On Jul, 20, 2026

31 people who take B12 and Carnitor together, and have interactions are studied.

What are the common drug interactions of B12 and Carnitor, by gender? *:

female:

Increased appetite
Abnormal behaviour
Anxiety
Bruxism (habitual grinding of the teeth, typically during sleep)
Dermatillomania (skin picking disorders)
Disturbance in attention
Ear infection
Hypotonia (low muscle tone)
Nail picking
Obsessive-compulsive disorder (an anxiety disorder characterized by intrusive thoughts that produce uneasiness, apprehension, fear, or worry;)

male:

Overdose
Drug ineffective
Vitamin b12 increased
Aphthous ulcer (mouth ulcer)
Cough
Diarrhoea
Hypersensitivity
Malaise (a feeling of general discomfort or uneasiness)
Nasopharyngitis (inflammation of the nasopharynx)
Nocturia (the need to get up in the night to urinate)

What are the common drug interactions of B12 and Carnitor, by age (0-1 to 60+)? *:

0-1:

Respiratory acidosis (respiratory failure or ventilatory failure, causes the ph of blood and other bodily fluids to decrease)
Rhabdomyolysis (a condition in which damaged skeletal muscle tissue breaks down)
Dyspnoea (difficult or laboured respiration)
Otitis media acute (rapid inflammation of the middle ear)

2-9:

Abnormal behaviour
Alanine aminotransferase increased
Anxiety
Aspartate aminotransferase increased
Blood creatinine decreased
Blood iron decreased
Blood urea increased
Bruxism (habitual grinding of the teeth, typically during sleep)
Constipation
Dermatillomania (skin picking disorders)

10-19:

Hypersensitivity
Nasopharyngitis (inflammation of the nasopharynx)
Overdose
Seizure (abnormal excessive or synchronous neuronal activity in the brain)
Diarrhoea
Pneumonia

20-29:

Aphthous ulcer (mouth ulcer)
Overdose
Aggression
Alopecia (absence of hair from areas of the body)
Essential tremor
Nephrolithiasis (calculi in the kidneys)

30-39:

Cardiovascular disorder (heart diseases)
Emotional distress
Injury
Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
Nervous system disorder (a general class of medical conditions affecting the nervous system)
Neuropathy peripheral (surface nerve damage)
Pain
Skin injury
Anxiety

40-49:

n/a

50-59:

n/a

60+:

Anaemia (lack of blood)
Cough
Diarrhoea
Malaise (a feeling of general discomfort or uneasiness)
Nocturia (the need to get up in the night to urinate)
Oedema lower limb (fluid collection in tissue of lower leg)
Weight increased
Drug ineffective
Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)

What are the existing conditions these people have? *

Growth Hormone Deficiency: 4 people, 12.90%
Cerebral Palsy: 3 people, 9.68%
Weakness: 2 people, 6.45%
Nausea And Vomiting: 2 people, 6.45%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 2 people, 6.45%
Loss Of Consciousness: 2 people, 6.45%
Homocystinuria (inherited disorder in which the body is unable to process certain building blocks of proteins (amino acids) properly): 2 people, 6.45%
Fever: 2 people, 6.45%
Amino Acid Level Increased: 2 people, 6.45%

* Approximation only. Some reports may have incomplete information.

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