Levothyroxine 50mcg: Uses, Dosage and Side Effects

Levothyroxine sodium (Tablet, Thyroid hormone replacement) - Daily thyroid hormone replacement for an underactive thyroid.

Overview

Levothyroxine is a synthetic form of thyroxine (T4) used to treat hypothyroidism. It replaces the hormone the thyroid no longer makes and is usually taken for life.

How It Works

It is converted in the body to active T3, restoring normal metabolism.

Uses (Indications)

• Hypothyroidism
• After thyroid surgery
• Some thyroid cancers (specialist use)

Dosage: General Label Information

Contraindications: Who Should Not Take It

• Untreated adrenal insufficiency
• Uncorrected overactive thyroid

Side Effects

• Usually none at the correct dose
• Too much: palpitations, sweating, weight loss, anxiety

Interactions

• Iron, calcium and antacids (take 4 hours apart)
• Some PPIs
• Warfarin

Storage

Store below 25°C, protected from light.

Patient Counselling Tips

• Take on an empty stomach
• Keep the same brand where possible
• Get blood tests as scheduled

When to See a Doctor

• Chest pain or palpitations
• Pregnancy (dose often changes)

Before You Take Levothyroxine 50mcg

Tell your doctor or pharmacist if you are pregnant or breastfeeding, have kidney, liver or heart problems, have had an allergic reaction to any medicine, or take other prescription medicines, herbal remedies or supplements. Bring a list of everything you take to every appointment.

Missed Doses and Long-Term Use

If you miss a dose of Levothyroxine 50mcg, take it when you remember unless it is almost time for the next one; never double up. Long-term medicines work best when taken at the same time every day. Do not stop suddenly without talking to your prescriber, and keep follow-up appointments and blood tests.

Frequently Asked Questions

This Levothyroxine 50mcg guide is educational, based on official labelling and public guidance, and reviewed by the ghkh.site editorial team. Always read the leaflet in your pack and ask your pharmacist.