Thyroxine - what would happen if a person without a thyroid disorder took it?

what would happen if a person with no thyroid problems took the drug Thyroxine?

The first answerer has it. Thyrotoxicosis. That means that your body is being poisoned by too much thyroid hormone. This leads to a racing heart, and heart palpitations. This can then lead to a heart attack or congestive heart failure. Let's see, what else? Severe insomnia, and your muscles will waste away. Trust me, you don't want to know what any of this feels like.

Thyrotoxicosis - don't do it.

you'd be ill ,thyroxine is given because the body doesn't produce the sufficient amount to keep the metabolism working properly so if it wasn't needed and was taken you would be in hypermode too much thyroid hormone

Thyroxine is used to treat an under-active thyroid gland. Taking it without a thyroid problem is extremely dangerous, as it hyper accelerates all bodily functions, including the heart. This of course, could cause all sorts of heart problems.

If you are considering taking these tablets for any reason - don't.

my hubby is on thyroxine as hes had part of his thyroid removed, i took some of his pills once to see if it would speed up my metabolism but all that happened was i felt nauseas

It would give them the symptoms of an overactive thyroid - racing pulse, thirst, big appetite, diarrhoea, anxiety, sleeplessness and emaciation. It is actually abused occasionally. Also, it would depress the actual thyroid's production and lower the quantity of TSH released by the pituitary, so there would be an underactive thyroid for a while after someone stopped.