Potential Side Effects of Levothyroxine 25 mg: What to Watch For

Monitor yourself for changes in heart rate. A rapid or irregular heartbeat (tachycardia or arrhythmia) is a potential side effect. Consult your doctor immediately if you experience this.

Pay close attention to your weight. While weight loss is a common goal, significant, unintentional weight loss could indicate a problem. Similarly, unexplained weight gain should be reported to your physician.

Changes in bowel habits are possible. You might experience constipation or diarrhea. Adequate hydration and fiber intake can often mitigate these effects, but consult your doctor if they persist or worsen.

Common Side Effects

Many individuals experience milder side effects. These often include headache, muscle cramps, and tremor. While generally tolerable, persistence or worsening requires medical attention.

Less Common, but Serious Side Effects

While less frequent, some serious side effects need immediate medical intervention. These include changes in mood (irritability, anxiety, depression), sleep disturbances, and bone pain. Your doctor should be informed about any of these occurrences.

Helpful Tracking Table

Symptom Severity (1-5, 1 being mild, 5 being severe) Frequency Notes
Heart palpitations
Weight Change Specify increase or decrease
Bowel Changes Specify constipation or diarrhea
Headache
Muscle Cramps
Tremor
Mood Changes Specify type of mood change
Sleep Disturbances
Bone Pain

This table helps you track your symptoms. Share this completed table with your doctor during your next visit.