Hello,
The prescribed dose of Synthyroid depends upon the age, weight, medical condition, laboratory tests results & response of the patient to the treatment being given.
Avoid changing the doses by your self. Thyroid replacement medication is usually taken for life, never stop this medication without consulting your doctor.
An underactive thyroid causes weight gain, get properly treated. Overactive thyroid caused
weight loss.
Overdose of the medication may cause
arrhythmia,
dizziness,
loss of consciousness, confusion & seizures.
Synthroid is used to treat thyroid disorders NOT obesity(weight gain).
Weight gain may occur due to age, diabetes, PCOS, fluid retention, tiredness, stress & low mood, steroid treatment, etc.
You need a thorough medical health check up. Get treated at the earliest to get rid of unnecessary weight gain.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr Nupur K, General & Family Physician