NOTICE: This Consumer Medicine Information (CMI) is intended for persons living in Australia.
Consumer Medicine Information (CMI) summary
1. Why am I using THYROX?
2. What should I know before I use THYROX?
Talk to your doctor if you have any other medical conditions, take any other medicines, or are pregnant or plan to become pregnant or are breastfeeding. For more information, see Section 2. What should I know before I use THYROX? in the full CMI.
3. What if I am taking other medicines?
A list of these medicines is in Section 3. What if I am taking other medicines? in the full CMI.
4. How do I use THYROX?
5. What should I know while using THYROX?
Things you should do
Remind any doctor, dentist or pharmacist you visit that you are using THYROX.
Tell your doctor if you are pregnant or breastfeeding.
Visit your doctor regularly.
Immediately stop taking THYROX if a skin rash or other allergic reaction occurs.
Things you should not do
Do not switch or interchange with other brands unless advised by your doctor.
Do not change your dose unless your doctor tells you to do so.
Do not give this medicine to anyone else, even if his or her symptoms seem similar
to yours.
Driving or using machines
Do not drive or operate machinery where alertness is required, until you know how
the medicine affects you.
Drinking alcohol
Tell your doctor if you drink alcohol.
Looking after your medicine
Store below 25°C. Store in the original bottle. Keep the bottle tightly closed. Protect
from light.
Do not take THYROX if the tablet's colour has changed.
6. Are there any side effects?
For more information, including what to do if you have any side effects, see Section 6. Are there any side effects? in the full CMI.
WARNING: THYROX cannot be switched for the same dose of ELTROXIN. If your doctor
decides to switch treatment from ELTROXIN to THYROX, then they should have a plan
for monitoring your blood tests and adjust your dose if needed. You should not change
from THYROX to ELTROXIN unless your doctor decides to switch products, and there is
a plan for monitoring your blood tests and reviewing your dose.
Full Consumer Medicine Information (CMI)
1. Why am I using THYROX?
Thyroid hormone deficiency also known as Hypothyroidism.
TSH-responsive tumours (certain tumours of the thyroid gland) of the thyroid
2. What should I know before I use THYROX?
Warnings
Do not use THYROX if:
Check with your doctor if you:
Pregnancy and breastfeeding
3. What if I am taking other medicines?
4. How do I use THYROX?
How much to take
When to take THYROX
How to take THYROX
If you forget to use THYROX
If you use too much THYROX
(by calling 13 11 26), or
5. What should I know while using THYROX?
Things you should do
Call your doctor straight away if you:
Things you should not do
Driving or using machines
Drinking alcohol
Looking after your medicine
Getting rid of any unwanted medicine
6. Are there any side effects?
Less serious side effects
Less serious side effects
What to do
Gastrointestinal related:
Nausea
Diarrhoea
Stomach cramp
Vomiting
Increased appetite
Nervous system related:
Nervousness
Anxiousness
Excitation
Restlessness
Headache
Lack of concentration
Irritability
Tiredness
inability to sleep
sleep disturbances
Other side effects:
hair loss
increased appetite
muscle weakness & cramps
heat intolerance
excessive sweating
flushing
weight loss
menstrual irregularities
decreased libido
fever
Speak to your doctor if you have any of these less serious side effects and they worry
you.
Serious side effects
Serious side effects
What to do
Skin related:
allergic reactions such as skin rash
Heart related:
chest pain
irregular heartbeats
Nervous system related:
unusual movements, including tremor
Other side effects:
shortness of breath
rapid breathing
increased blood pressure
Call your doctor straight away, or go straight to the Emergency Department at your
nearest hospital if you notice any of these serious side effects.
Reporting side effects
7. Product details
What THYROX contains
Active ingredient
(main ingredient)
levothyroxine sodium
Other ingredients
(inactive ingredients)
microcrystalline cellulose
maize starch
purified talc
colloidal anhydrous silica
magnesium stearate
sunset yellow FCF aluminium lake in THYROX 25 mcg and 100 mcg
allura red AC aluminium lake in THYROX 75 mcg and 200 mcg
indigo carmine aluminium lake in THYROX 75 mcg
quinoline yellow aluminium lake in THYROX 100 mcg