Thyroid UK
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male Hair shedding before Levothyroxine

so im a 19 year old male. my hair has been shedding since last june. i went to the derma 3weeks ago and she ordered some blood tests. my tsh appeared high so she referred me to the endocrinologist. i was diagnosed with subclinical hypothyroidism and was prescribed 25mcg levothyroxine (euthyrox). i dont have other symptoms like feeling tired. just the hair fall.

do you think the meds will cause greater hair fall?

will it make me feel worse?

if i notice hair fall should i stop it?

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Pauloingaran,

Hair thinning and hair loss are typical symptoms of low thyroid. Levothyroxine replacement should help but can sometimes cause more hair loss in the first few months of taking it. It will take several months for thyroid levels to become optimal after which you may expect hair loss to improve.

The goal of Levothyroxine is to restore the patient to euthyroid status. For most patients that will be when TSH is 0.3 - 1.0 with FT4 in the upper range. FT4 needs to be in the upper range in order that sufficient T3 is converted. Read Treatment Options in thyroiduk.org.uk/tuk/about_...

For maximum absorption Levothyroxine should be taken with water 1 hour before, or 2 hours after, food and drink, 2 hours away from other medication and supplements, and 4 hours away from calcium, iron, vitamin D supplements, magnesium and oestrogen.

It takes 7-10 days for Levothyroxine to be absorbed before it starts working and it will take up to six weeks to feel the full impact of the dose. Symptoms may lag behind good biochemistry by several months.

You should have a follow up thyroid test 6-8 weeks after starting Levothyroxine. Arrange an early morning and fasting (water only) blood draw when TSH is highest, and take Levothyroxine after your blood draw.

thyroiduk.org.uk/tuk/about_...

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