On a previous post of mine I received helpful advice to give levothyroxine a try. I’ve been on it since March 2022 with no improvement in my brain fog and memory issues. My derealization and depersonalization is still bad as well. I’m feeling tired most days and wasn’t really before. How long do I keep trying before I stop taking it and try to figure out another reason for my symptoms?
I’m currently on 50mcg now and I know it’s a starter dose but I’m wondering how much I should go up to before deciding if I should stop to continue.
I won’t be getting new thyroid labs done because my doctor says we are going for how I feel (and my numbers are bad - no one thinks my issue is thyroid-related but I have some of the symptoms!).
These are my labs from Oct 2021 and not being sure if my issue was related to any thyroid problem.
Written by
Snooperkitty21
To view profiles and participate in discussions please or .
Well firstly you are very lucky that you have a doctor is going to see how you feel rather than look at blood tests. This is the best way when taking Levo. If you only started taking Levo in March then it really is way to soon to decide if it is working or not. It’s a very long process to get to optimal dose. I think an increase in 25mcg should be tried next. I too had peaks and troughs when moving up through the doses. I’m now on 125mcgs and started last July on 50mcgs.Ask for an increase and see how you feel.
Yes my doctor gave me levo after I luckily read info on this site! He doesn’t think my thyroid is off but I’ve been so I’ll that I think he’ll give me anything at this point.I have an appt next week and will ask to go up to 75 mcg. Sounds like I need to get it up to that and likely even more to see how I feel.
I got the increase! He seemed a bit hesitant but I told him I read that most people need at least 100 mcg to feel well. I have a lab slip for a thyroid panel to be done.
Well you need to give Levo a good long trial before giving up. For me I knew that it was working because everytime I went up 25mcgs I would feel amazing for a few weeks then the symptoms would slowly return until me next increase. Some days I still feel sh**te ( normally after a burst of energy like decorating the day before) . However I do know that j feel 10X better than I did this time last year🤷♀️. We are all different. I’m on 125 mcgs now. This may be enough. I just don’t know yet. I’m not a patient person so it’s been I long year!!!!
We generally feel at our best when our T4 is in the top quadrant of its range as this should in theory convert to a decent level of T3 - and it is T3 - the active hormone that runs all bodily functions.
Whilst it is true you dose to relieve symptoms, you do need to be taking a decent dose of T4 to feel any benefit and your ' starter dose of 50 mcg ' should have been increased after 6-8 weeks, and this process needs to be repeated until your T4 is up towards the top of its range.
Your T4 is only just around 30% through the range and so this may take 2 or more dose increase in T4 .
No thyroid hormone replacement works well until your core strength vitamins and minerals, those of ferritin, folate, B12 and vitamin D are up and maintained at optimal levels.
So this might be an area to look to as well, and if these blood tests haven't been run, suggest these are actioned and forum members can also advise as to optimal levels necessary for optimal thyroid hormone conversion.
Thank you for your reply! I may ask for a rerun of my thyroid panel in a few months even though he wants to go by my symptoms. I’ve had it run 3 times over the past few years and my ft4 is always either 11 or 12 (9-19) so never high in range. I read on here that with a lower ft4 and normal tsh it can be central hypo so I’ve just had a brain MRI to see. I have all of those vitamins tested and they’re good now (but they weren’t always!).
Ferritin 67 (was 11 but am on iron)
Folate >45 nmol (optimal)
Vit D 165 pmol (75-250)
B12 700 pmol or so and I’m on injections at my request as well
I ended up getting the increase to 75 mcg and he ordered me a full thyroid panel but wants me to wait until I’ve been on 75 for 6 weeks to get the labs drawn. Is this an appropriate timeline?
Yes - it's usually suggested after any dose increase in Levothyroxine you get retested after around 6-8 weeks to reassess your symptoms and new blood test levels.
Yes my vitamin D is optimal now at 165 pmol (75-250) but was 65 before supplementsI’m on B12 injections and not taking a B complex. I bought some and tried it (even bought the recommended brand from a b12 group) and got bad headaches. I don’t get headaches normally.
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.
HRT & Thyroid
Thyroid or something else?
Most recent thyroid labs 
Vitamin and mineral deficiencies/Thyroid dysfunction.. Chicken or Egg?
Armour Thyroid back to Levo
