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Has taken over dose of thyroxine sodium. What to do?

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General & Family Physician
Practicing since : 1978
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My friend has taken over dose of thyroxine sodium (thyrox) , Arounf 6 tablet of 50 mcg . What to do ?
Posted Wed, 18 Sep 2013 in General Health
Answered by Dr. Pavan Kumar Gupta 53 minutes later
Thanks for the query.
Brief could be fatal,so you must take him to hospital.
Detailed answer....
Overdoses with thyroxin can produce typical signs and symptoms of thyrotoxicosis which include palpitations,nervousness,sweating,tachycardia,increased pulse rate and blood pressure,tremors,cardiac dysrrythmias etc
The management includes shifting to the ER and doing gastric lavage,oxygen administration with ventilation maintained.
Measures to control fever,hypoglycemia and fluid loss are initiated.
Cardiac glycosides are given if congestive heart failure develops.
Propranolol is given to reduce heart rate and palpitations.
Since this treatment is not possible in home,he has to be shifted to hospital urgently.
Best of luck
Above answer was peer-reviewed by
Follow-up: Has taken over dose of thyroxine sodium. What to do? 19 hours later

Thanks for your reply.

My friend has 6mcg thyroxine and 2 x 10mg cetirizine hydrochloride at about 9.30 pm yesterday (28th Aug.). After your reply, I took him to the hospital. The doctors kept him in the ICU for monitoring. They took ECG, tests like renal panel, sugar, BP etc were done. All were normal. They discharged him this morning (29th Aug) at 1pm.

My question is, is the decision correct? I mean how long does it take before the symptoms start showing or the damage begins? Is 12 hour monitoring from the time of consumption enough? Can something happen even now? Is there any diet restriction? Also, when can he start consuming his normal dosage of thyrox?

He is fine.. just feeling weak. So I was just worried.
Answered by Dr. Pavan Kumar Gupta 1 hour later
Thanks for the query.
The fact is that many of the symptoms of overdosage appear late and so your friend can still have side effects coming in coming week.You should be careful and keep an eye on his pulse rate,blood pressure etc.
Probably he has been discharged because the overdosage was not very excessive.
There is no diet restriction.
He must avoid taking thyrox for at least a week.
Once he starts his dose,it should be started with low dose.
Above answer was peer-reviewed by
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