Levothyroxine 25, 50, 75, 100 & 150

What Is This Medication?

Levothyroxine is a medication used to replace thyroid hormone when your body is not producing enough. Low thyroid hormone levels may occur due to an underactive thyroid gland, or after surgery, radiation, or injury to the thyroid.

How Levothyroxine Works

Levothyroxine is a synthetic form of the natural thyroid hormone. When taken regularly, it restores hormone levels in the body to normal.
It also helps reduce TSH levels from the pituitary gland, making it effective for treating certain thyroid conditions such as goiters and thyroid nodules.

How to Store It

• Keep Levothyroxine in a cool, dry place

• Protect it from heat and moisture

• Store out of reach of children

How to Take Levothyroxine

• Take it by mouth in the early morning, on an empty stomach

• Take it at the same time every day

• Swallow the tablet whole, unless your doctor instructs otherwise

Consistency is key for proper absorption and stable hormone levels.

Dosage Information

Your dose depends on:

• Age

• Weight

• Your thyroid hormone levels

• Your doctor’s evaluation

Treatment usually starts with a low dose, which is adjusted gradually until the correct maintenance dose is reached. Always follow your doctor’s instructions.

If You Miss a Dose

• Take it as soon as you remember

• If it’s almost time for your next dose, skip the missed one

• Do not double-dose

Setting reminders or alarms can help prevent missed doses.

Overdose Warning

If you suspect an overdose, contact your doctor or seek medical help immediately.

Warnings & Precautions

Misuse or excessive dosing can cause serious or even life-threatening side effects.
Inform your doctor if:

• You have heart problems

• You have adrenal gland disorders

• You are taking other medications

• You have any other chronic medical conditions

Possible Side Effects

Some people may experience:

• Heart palpitations or irregular heartbeat

• Difficulty sleeping

• Increased sweating, feeling hot, or fever

• Changes in menstrual cycle

• Digestive upset (nausea, diarrhea, stomach discomfort)

Contact your doctor if symptoms become severe or do not improve.

When Levothyroxine Should NOT Be Used

Do not use if you have:

• Recently had a heart attack

• Untreated adrenal gland problems

• Thyrotoxicosis (overactive thyroid hormone levels)

• An allergy to Levothyroxine

How Long Should You Take It?

Take Levothyroxine for as long as your doctor prescribes. Many people take it long-term to maintain normal thyroid function.