Vistaril and Levothroid drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Vistaril (hydroxyzine hydrochloride) and Levothroid (levothyroxine sodium). Common drug interactions include fibromyalgia among females and tremor among males.

The phase IV clinical study analyzes what interactions people have when they take Vistaril and Levothroid. It is created by eHealthMe based on reports of 38 people who take the same drugs from the FDA, and is updated regularly.

What is Vistaril?

Vistaril has active ingredients of hydroxyzine hydrochloride. It is often used in stress and anxiety. eHealthMe is studying from 9,565 Vistaril users. Check the latest studies of Vistaril.

What is Levothroid?

Levothroid has active ingredients of levothyroxine sodium. It is often used in hypothyroidism. eHealthMe is studying from 8,974 Levothroid users. Check the latest studies of Levothroid.

On Jul, 11, 2026

38 people who take Vistaril and Levothroid together, and have interactions are studied.

Vistaril and Levothroid drug interactions.

What are the common drug interactions of Vistaril and Levothroid, by gender? *:

female:

Fibromyalgia (a long-term condition which causes pain all over the body)
Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability)
Pain in extremity
Somnolence (a state of near-sleep, a strong desire for sleep)
Spinal osteoarthritis (joint cartilage loss in spine)
Suicidal ideation
Weight decreased
Ankle fracture
Arteriosclerosis (thickening and hardening of arteries)
Bone pain

male:

Tremor (trembling or shaking movements in one or more parts of your body)
Abdominal adhesions (inflammation of abdomen)
Asthma
Attention deficit/hyperactivity disorder
Autonomic failure syndrome (a degenerative disease of the autonomic nervous system)
Autonomic neuropathy (malfunction of the autonomic nervous system (ans))
Blood glucose fluctuation
Cardiac amyloidosis (protein deposition in heart)
Cardiolipin antibody positive
Cerebellar ataxia (loss of coordination)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Acute hepatic failure
Hepatic encephalopathy (spectrum of neuropsychiatric abnormalities in patients with liver failure)
Hepatotoxicity (chemical-driven liver damage)
Overdose

30-39:

n/a

40-49:

Suicidal ideation
Alopecia (absence of hair from areas of the body)
Arteriosclerosis (thickening and hardening of arteries)
Arthralgia (joint pain)
Arthritis (form of joint disorder that involves inflammation of one or more joints)
Asthenia (weakness)
Back pain
Bone pain
Breast calcifications (deposits of calcium that can be seen on a mammogram of the breast)
Breast cancer

50-59:

Palpitations (feelings or sensations that your heart is pounding or racing)
Pruritus (severe itching of the skin)
Somnolence (a state of near-sleep, a strong desire for sleep)
Tremor (trembling or shaking movements in one or more parts of your body)
Weakness
Arthralgia (joint pain)
Back pain
Cardiac arrest
Chest pain
Dyspnoea (difficult or laboured respiration)

60+:

Dizziness
Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Alopecia (absence of hair from areas of the body)
Dyspnoea (difficult or laboured respiration)
Renal failure (kidney dysfunction)
Anaemia (lack of blood)
Blood pressure increased
Chronic kidney disease
Confusional state
Diarrhoea

What are the existing conditions these people have? *

Pain: 13 people, 34.21%
Fibromyalgia (a long-term condition which causes pain all over the body): 7 people, 18.42%
Spinal Osteoarthritis (joint cartilage loss in spine): 7 people, 18.42%
Neuropathy Peripheral (surface nerve damage): 6 people, 15.79%
Abdominal Discomfort: 5 people, 13.16%
Nausea (feeling of having an urge to vomit): 5 people, 13.16%
Fever: 5 people, 13.16%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 5 people, 13.16%
Headache (pain in head): 5 people, 13.16%
Hypersensitivity: 3 people, 7.89%

* Approximation only. Some reports may have incomplete information.

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