Unithroid and Multivitamin drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Unithroid (levothyroxine sodium) and Multivitamin (ascorbic acid; biotin; cyanocobalamin; dexpanthenol; ergocalciferol; folic acid; niacinamide; pyridoxine hydrochloride; riboflavin phosphate sodium; thiamine hydrochloride; vitamin a; vitamin e). Common drug interactions include vomiting among females and diarrhoea among males.

The phase IV clinical study analyzes what interactions people have when they take Unithroid and Multivitamin. It is created by eHealthMe based on reports of 21 people who take the same drugs from the FDA, and is updated regularly.

What is Unithroid?

Unithroid has active ingredients of levothyroxine sodium. It is often used in hypothyroidism. eHealthMe is studying from 890 Unithroid users. Check the latest studies of Unithroid.

What is Multivitamin?

Multivitamin has active ingredients of ascorbic acid; biotin; cyanocobalamin; dexpanthenol; ergocalciferol; folic acid; niacinamide; pyridoxine hydrochloride; riboflavin phosphate sodium; thiamine hydrochloride; vitamin a; vitamin e. It is often used in vitamin supplementation. eHealthMe is studying from 83,598 Multivitamin users. Check the latest studies of Multivitamin.

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 Sep, 03, 2026

21 people who take Unithroid and Multivitamin together, and have interactions are studied.

Unithroid and Multivitamin drug interactions.

What are the common drug interactions of Unithroid and Multivitamin, by gender? *:

female:

Vomiting
Nausea (feeling of having an urge to vomit)
Bile duct obstruction (blockage in the tubes that carry bile from the liver to the gallbladder)
Cardio-respiratory arrest (sudden dysfunction of heart and lungs)
Drug hypersensitivity
Multiple sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath)
Pain in extremity
Pancreatic carcinoma metastatic (pancreatic cancer- metastatic)
Pruritus (severe itching of the skin)
Upper gastrointestinal haemorrhage (upper gastrointestinal bleeding)

male:

Diarrhoea
Chest pain
Nausea (feeling of having an urge to vomit)
Osteomyelitis (infection of bone)
Pancreatitis (inflammation of pancreas)
Throat irritation
Vomiting
White blood cell count decreased
Coronary artery disease (plaque building up along the inner walls of the arteries of the heart, which narrows the arteries and restricts blood flow to the heart)
Coronary artery occlusion (complete obstruction of blood flow in a coronary artery)

What are the common drug interactions of Unithroid and Multivitamin, 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:

Cough
Diarrhoea
Hyperchlorhydria (gastric acid levels are higher in stomach)
Influenza like illness
Nausea (feeling of having an urge to vomit)
Oropharyngeal pain
Pancreatitis (inflammation of pancreas)
Respiratory disorder (respiratory disease)
Vomiting

50-59:

Nausea (feeling of having an urge to vomit)
Vomiting
Adverse drug reaction
Chills (felling of cold)
Headache (pain in head)
Insomnia (sleeplessness)
Disturbance in attention
Dizziness
Eyelid disorder
Fall

60+:

Diarrhoea
Bile duct obstruction (blockage in the tubes that carry bile from the liver to the gallbladder)
Bone pain
Bone swelling
Chest pain
Constipation
Coronary artery disease (plaque building up along the inner walls of the arteries of the heart, which narrows the arteries and restricts blood flow to the heart)
Coronary artery occlusion (complete obstruction of blood flow in a coronary artery)
Cough
Drug hypersensitivity

What are the existing conditions these people have? *

Pain: 3 people, 14.29%
High Blood Pressure: 3 people, 14.29%
High Blood Cholesterol: 3 people, 14.29%
Uveitis (inflammation of the uvea): 2 people, 9.52%
Upper Gastrointestinal Haemorrhage (upper gastrointestinal bleeding): 2 people, 9.52%
Type 2 Diabetes: 2 people, 9.52%
Hypomagnesaemia (electrolyte disturbance in which there is an abnormally low level of magnesium in the blood): 2 people, 9.52%
Diabetes: 2 people, 9.52%

* Approximation only. Some reports may have incomplete information.

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