Synthroid and Viracept drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Synthroid (levothyroxine sodium) and Viracept (nelfinavir mesylate). Common drug interactions include abortion spontaneous among females and emotional distress among males.

The phase IV clinical study analyzes what interactions people have when they take Synthroid and Viracept. It is created by eHealthMe based on reports of 29 people who take the same drugs from the FDA, and is updated regularly.

What is Synthroid?

Synthroid has active ingredients of levothyroxine sodium. It is often used in hypothyroidism. eHealthMe is studying from 249,198 Synthroid users. Check the latest studies of Synthroid.

What is Viracept?

Viracept has active ingredients of nelfinavir mesylate. It is often used in hiv infection. eHealthMe is studying from 6,399 Viracept users. Check the latest studies of Viracept.

On Jul, 13, 2026

29 people who take Synthroid and Viracept together, and have interactions are studied.

Synthroid and Viracept drug interactions.

What are the common drug interactions of Synthroid and Viracept, by gender? *:

female:

Abortion spontaneous (naturally occurring miscarriage)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Back pain
Chronic kidney disease
Emotional distress
Intra-uterine death
Pain
Photosensitivity reaction
Renal pain (kidney pain)

male:

Emotional distress
Pain
Anxiety
Back pain
Blood creatine phosphokinase increased
Decreased activity
Hepatic fibrosis (scarring process that represents the liver's response to injury)
Hepatitis (inflammation of the liver)
Pain in limb
Post-traumatic stress disorder

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

0-1:

n/a

2-9:

n/a

10-19:

Pancarditis (inflammation of the entire heart)
Pancreatitis (inflammation of pancreas)

20-29:

n/a

30-39:

Hypokalaemia (low potassium)
Abortion spontaneous (naturally occurring miscarriage)
Fall
Intra-uterine death
Paralysis
Rhabdomyolysis (a condition in which damaged skeletal muscle tissue breaks down)
Blood creatine phosphokinase increased
Dehydration (dryness resulting from the removal of water)
Depression
Dysstasia (difficulty in standing)

40-49:

Photosensitivity reaction
Anaemia (lack of blood)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Biliary tract disorder
Cholelithiasis (the presence or formation of gallstones in the gallbladder or bile ducts)
Cholestasis (a condition where bile cannot flow from the liver to the duodenum)
Chronic kidney disease
Emotional distress
Hepatic cirrhosis (chronic liver disease characterized by replacement of liver tissue by fibrosis, scar tissue)

50-59:

Hepatic fibrosis (scarring process that represents the liver's response to injury)
Hepatitis (inflammation of the liver)
Anaemia (lack of blood)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Asthenia (weakness)
Blood creatinine increased
Bone density decreased
Bone marrow failure
Bronchitis chronic (inflammation of the mucous membrane in the bronchial tubes- chronic)

60+:

Back pain
Chronic kidney disease
Anxiety
Renal failure (kidney dysfunction)
Renal pain (kidney pain)
Obesity (having too much body fat)
Renal failure chronic (long lasting kidney dysfunction)
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)
Weight increased
Emotional distress

What are the existing conditions these people have? *

High Blood Pressure: 5 people, 17.24%
High Blood Cholesterol: 4 people, 13.79%
Diabetes: 4 people, 13.79%
Cardiac Disorder: 4 people, 13.79%
Viral Infection: 3 people, 10.34%
Urinary Retention (the inability to completely or partially empty the bladder): 3 people, 10.34%
Pain: 3 people, 10.34%
Insomnia (sleeplessness): 3 people, 10.34%
Indigestion: 3 people, 10.34%
Hypersensitivity: 3 people, 10.34%

* Approximation only. Some reports may have incomplete information.

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