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PLEASE NOTE: This treatment is not available through our online pharmacy service. This page is for information only. If you are experiencing any of the symptoms related to the condition(s) this medication treats, we strongly recommend that you see your GP in person.


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How to order
  1. Click on the green "Back To Get Started" button, then click "Start Consultation" button on the next page.
  2. Fill in our short consultation form.
  3. Choose delivery method and mode of payment.
  4. Our team of expert prescribers will assess whether medication is suitable.
  5. If you get the green light and it is deemed suitable, your order will be processed quickly and efficiently.
Confidential Service

Your privacy is important, Prescription Doctor are committed to keeping your details completely confidential.

This is why we also take steps to conceal your prescription products under two layers of packaging.

Delivery and Packing
Discreet Delivery?

We have a commitment to delivering a discreet service and understand your need for privacy. We ship all orders via a trackable courier using discreet, plain packaging.

Do I Need to Wait in All Day for Delivery?

Once your order is dispatched you will receive a tracking number via sms and email.

Do You Deliver on Weekends?

We deliver medications between Monday and Saturday. You can upgrade to Saturday delivery on Friday.

My Order Hasn’t Arrived What Should I Do?

You should receive a tracking number with your order which you can use this number to track your parcel online. This should give you a clear indication of where your parcel is. If you haven’t received your parcel in the time frame given by our couriers, contact your local depot to find out where it is. You can also contact our support team who will do this for you.

Can I Be Notified by Text?

On checkout you will be asked to leave your mobile number so our courier can text you about the delivery. This is also useful if the courier has problems finding your address. We will not use your mobile number for anything else.

Payment Methods
How Can I Pay for My Order?

You can pay for your order using credit, debit card or via bank transfer.

I Don’t Have a Credit Card, How Can I Pay?

If you don’t have a credit or debit card you can pay via bank transfer. We will give you a unique reference number at checkout along with details of how to make the transfer. Once the money has cleared in our account, we will process your order.

How Do You Keep My Details Safe?

We are a completely secure site and take many measures to ensure your details are kept safe. We understand that you have a right to extreme privacy when purchasing sensitive health medications. All information that you provide to us is stored on our secure servers. Any payment transactions will be encrypted using SSL technology.

Payment and refunds?

You can pay for your order using credit, debit card and bank transfer.

Card Payment: Please notify us that you wish to cancel your order. Your refund will show available In 1 - 3 days.

Bank Transfer: A member of our team will contact you requesting for your bank details. These details are only used to transfer the funds back into your account.

Treatment Information

Table of contents

What is Eltroxin?

Eltroxin is a brand of levothyroxine from ADVANZ Pharma. It is used to treat an underactive thyroid (hypothyroidism).

The thyroid gland is a butterfly-shaped gland in your neck that secretes hormones which regulate various functions in your body.

Hypothyroidism occurs when your thyroid gland does not produce enough triiodothyronine (T3) and thyroxine (T4) hormones.

With Prescription Doctor's convenient online healthcare service, you can buy Eltroxin tablets from a UK regulated pharmacy. To begin your order, simply complete our short online medical questionnaire. If your order is approved before 3pm on a weekday, our pharmacy can dispatch Eltroxin to your door via a fast and discreet delivery the next day.

What Causes An Underactive Thyroid?

An underactive thyroid can be caused by autoimmune disorders such as Hashimoto's Thyroiditis. This disorder triggers an attack on your thyroid gland, damaging it and stopping it from producing enough thyroxine.

A tiny gland in the brain, known as the pituitary gland, releases thyroid-stimulating hormone (TSH). The pituitary gland signals the thyroid gland to release the thyroid hormone.

When you have a low level of thyroxine, your pituitary produces more TSH to try to produce more thyroxine. This combination of high TSH levels and low thyroxine levels indicate an underactive thyroid.

When there is a lack of thyroxine, your body's metabolism slows down, subsequently slowing down bodily processes and resulting in lower levels of energy.

The common symptoms of underactive thyroid include:

  • Fatigue
  • Sensitivity to cold
  • Weight gain
  • Constipation
  • Dry/brittle skin, hair and nails.

A thyroid function blood test will be able to identify if you have an underactive thyroid. If the result is positive, you will need to start taking a daily hormone replacement tablet.

If you do not take the appropriate thyroid treatment, you may notice your symptoms worsen.

How Does Eltroxin Work?

Eltroxin contains a synthetic hormone called levothyroxine.

Levothyroxine replaces and replenishes the low levels of thyroxine your body naturally produces.

Your doctor will prescribe you a suitable dose of Eltroxin, however, you will need to undergo regular blood tests to monitor your thyroid levels.

How Do I Take Eltroxin?

The tablet is best taken 30 minutes before breakfast and should be swallowed with a glass of water.

As with any medication, it's important to always take the dose prescribed by your doctor. If you are unsure about the dose, check with your doctor before taking anything.

Eltroxin side effects and cautions

Before you start taking Eltroxin, you must read the patient information leaflet. This leaflet contains instructions on how to use, store and discard your medication, and information regarding the product's safety.

You can read the Eltroxin patient information leaflet online.

If you have any doubts or concerns about any of the information presented in the patient information leaflet, speak to your doctor or ask a pharmacist.

You can also discuss your treatment with one of our online prescribers by using the "my chats" feature of your Prescription Doctor account.

Side effects of Eltroxin

All medicines carry the risk of side effects, though not everybody experiences them.

Side effects of Eltroxin may include:

  • agitation
  • chest pain
  • cramps
  • diarrhoea
  • fever
  • flushing
  • hair loss
  • insomnia
  • intolerance to heat
  • irregular or fast heartbeat
  • irregular periods in women
  • muscle weakness
  • sweating
  • vomiting
  • weight loss

This is not an exhaustive list of side effects associated with Eltroxin. Further information regarding the safety of Eltroxin can be found within the patient information leaflet enclosed with your medicine.

If you experience any side effects to Eltroxin, regardless of whether they are listed above or in the patient information leaflet, inform your doctor or a pharmacist for advice.


Do not take Eltroxin if you are allergic to levothyroxine or any of the other ingredients listed in the patient information leaflet.

Eltroxin contains lactose. Speak to your doctor before taking Eltroxin if you are sensitive to some sugars (lactose intolerant).

If you experience the signs of an allergic reaction after taking Eltroxin, stop taking the medicine and seek immediate medical attention by going straight to your nearest accident and emergency department. Remember to take the packaging and any remaining medicine with you so that doctors treating you know exactly what you took.

Pregnancy and breastfeeding

Speak to your doctor before taking Eltroxin if you are pregnant, think you might be pregnant, or are breastfeeding.

Other safety information

Always read the enclosed patient information leaflet before taking Eltroxin.

Inform our online prescribers of all other medicines you are currently taking. This includes medicines prescribed by your doctor, as well as those bought over the counter, and health or herbal supplements.

Never take Eltroxin past the expiry date printed on the packaging.

Always keep medicines out of sight and reach from children and pets.

Do not throw away Eltroxin via household or water waste, as this can harm the environment. Instead, ask your local pharmacy to dispose of any unwanted or expired medicine on your behalf.

Never share your Eltroxin tablets with anybody else, even if they are experiencing the same symptoms or have been diagnosed with the same condition as you.

Where can I buy Eltroxin tablets online in the UK?

If you have been prescribed Eltroxin by your doctor before, you can buy Eltroxin online from Prescription Doctor's UK-based pharmacy.

Our private prescription service makes it straightforward to order Eltroxin online. Simply fill in our online medical consultation form for us to pass to our doctor.

One of our online doctors will review your medical questionnaire and determine whether the medicine is safe for you.

If your order is approved before 3pm on a weekday, our UK-based pharmacy will package your Eltroxin tablets in discreet packaging and ship it directly to your door.


Treatment information

  • Product Name: Eltroxin
  • Manufacturer: Advanz pharma
  • Active Ingredient(s): Levothyroxine
  • Administration: Oral
  • Presentation: Tablet
  • Available Strength: 25mcg, 50mcg, 100mcg
  • Exemption: Prescription-Only Medicine
  • Dosage: Take as prescribed
  • Description: Eltroxin is a synthetic hormone, used to treat hypothyroidism
  • Drug Class: Synthetic hormone
  • Alcohol Consumption: No influence
  • When Pregnant: Tell your prescriber if you are pregnant or plan on becoming pregnant before taking Eltroxin.
  • When Breastfeeding: Tell our prescriber if you are breastfeeding on plan on breastfeeding before taking Eltroxin.
  • Related Drug: Levothyroxine
  • Price: 42.99 GBP
Click here to view the Eltroxin - Patient Information Leaflet

Authored & Reviewed By

Mohamed Imran Lakhi

Mohamed Imran Lakhi

MPharm - Lead Pharmacist
Imran Lakhi is the superintendent pharmacist and founder at Prescription Doctor. He has been at the core of our team.

Published on: 12/09/2019 Reviewed on: 13/03/2024
Customer Service