Starting dose of levothyroxine too high? - Thyroid UK

Thyroid UK

140,705 members165,686 posts

Starting dose of levothyroxine too high?

Balaine profile image
2 Replies

After a second blood test I have been prescribed levothyroxine 75 mg daily.

My last blood test had a TSH of 5.06 upper range 4.2 and T 4 of 12.06 range 11-23

I am 55 years old. I have been taking the medication as directed but I feel that my symptoms are worse on the medication in particular the fatigue and gastric upset. Although I am not as cold and my sleep has improved.

I am due back with the doctor in a forthnight. Should I just persevere? Or should I reduce the dose to 50mg. I have ordered the thyroid plus 11 test from blue horizons as when I asked the Doc if I could be anemic etc she indicated that she did not think so and we should try the levothyroxine before further testing. I was planning on doing the blood test before returning to the doctor just in case I have B 12 issues etc.

Written by
Balaine profile image
Balaine
To view profiles and participate in discussions please or .
Read more about...
2 Replies
Clutter profile image
Clutter

Balaine,

It takes 7-10 days to absorb Levothyroxine before it starts working and in the meantime symptoms may become worse and it will take up to six weeks to feel the full impact of the dose.

50-100mcg is an appropriate starting dose. I would remain on 75mcg for now. 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.

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 and oestrogen.

Balaine profile image
Balaine in reply toClutter

Thank you. Yes I have been following the advice re taking my tablets etc. I suppose I just needed the reassurance that symptoms can get worse before they get better on levothyroxine. Feeling very poorly but I will stick it out if it means I will feel better. Thank you for your prompt reply. This forum is a terrific resource. Thank you to everyone who keeps it up and running.

Not what you're looking for?

You may also like...

Am I starting on too high dose of levothyroxine

Hi All I've finally found a doctor willing to listen. I have blood tests this week for Hashimoto...
1004sonia profile image

Levothyroxine dose increase

Hello I have now been to the doctor and asked regarding increasing my Levothyroxine dose. I went...
lynnie0123 profile image

Expectations of low dose of levothyroxine 25mg

On week 2 (11 days) of 25mg daily, only plus is it appears to have relieved me of constipation and...
JaneHo profile image

Levothyroxine reduced!

Hello everyone, I went to the nurse for an asthma review and whilst I was in there I mentioned to...
Jenna_marie profile image

Starting Levothyroxine

Hi all, i'm quite new to the whole thyroid journey and i'm just really looking for some...
lunarbella profile image

Moderation team

See all
PurpleNails profile image
PurpleNailsAdministrator
RedApple profile image
RedAppleAdministrator
SlowDragon profile image
SlowDragonAdministrator

Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.

Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.