N
Glam Journal

What is levothyroxine 150 mg used for?

Author

Chloe Ramirez

Updated on March 10, 2026

What is levothyroxine 150 mg used for?

Levothyroxine is used to treat an underactive thyroid (hypothyroidism). It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery.

What are the side effects of levothyroxine 150 mcg?

Levothyroxine side effects

  • increased appetite.
  • weight loss.
  • heat sensitivity.
  • excessive sweating.
  • headache.
  • hyperactivity.
  • nervousness.
  • anxiety.

Is 150 mg of synthroid a lot?

The usual dose of Synthroid for thyroid stimulating hormone (TSH) suppression* is 2 micrograms of drug per kilogram of body weight (mcg/kg). This dose is taken once each day. This means that if you weigh 75 kg (about 165 pounds), your dosage of Synthroid would be 150 mcg each day.

What are the symptoms of too much levothyroxine?

Symptoms of overdose

  • Change in consciousness.
  • cold, clammy skin.
  • disorientation.
  • fast or weak pulse.
  • lightheadedness.
  • sudden headache.
  • sudden loss of coordination.
  • sudden slurring of speech.

Does levothyroxine make you put on weight?

In most cases, levothyroxine causes some weight loss. According to the American Thyroid Association, when this medication is started, you may lose up to 10% of your weight. This weight is mainly water weight, since being hypothyroid makes you retain water. Levothyroxine is a medication to treat hypothyroidism.

Can levothyroxine make you sleepy?

This overactivity can lead to fatigue as well as difficulty sleeping. Where daily hormone replacements tablets, such as levothyroxine, are prescribed for an underactive thyroid, symptoms including fatigue should gradually begin to disappear.

What foods should I avoid when taking levothyroxine?

levothyroxine food In addition, absorption of levothyroxine may be decreased by foods such as soybean flour, cotton seed meal, walnuts, dietary fiber, calcium, and calcium fortified juices. These foods should be avoided within several hours of dosing if possible.

Does levothyroxine affect sleep?

Conclusions Levothyroxine taken at bedtime significantly improved thyroid hormone levels. Quality-of-life variables and plasma lipid levels showed no significant changes with bedtime vs morning intake. Clinicians should consider prescribing levothyroxine intake at bedtime.

What foods should be avoided when taking Synthroid?

Foods containing soy and cottonseed meal can make Synthroid less effective. Walnuts, grapefruit juice, and dietary fiber can also make Synthroid less effective. If you eat any of these on a regular basis, check with your doctor. He or she may need to adjust your dose of Synthroid.

How do you know if thyroid medicine is working?

You should start to feel better a few days after you begin taking medicine. But it may take a few months for your thyroid hormone levels to get back to normal. If your levels get better, but you still have symptoms like fatigue and weight gain, your doctor may need to change your treatment.