Is it worth trying to buy thyroid replacement online?

Hi, I'm really new to all of this and hope someone can help me.

I've had the following results back recently:

TSH 2 months ago - 1.58

TSH 1 week ago - 2.0



FT3 - 4.6



FT4 - 14.9



B12 is at 425 (I've bought a 5000 mcg supplement).

Folate is 13.1

Ferritin was really low but has recently improved and is 39, but I've ordered more ferrous sulphate.

Doc is blaming my PCOS, but it doesn't explain a lot of my symptoms (numb hands and feet/pins and needles, joint pain, brain fog)

I've put on over 2 stone in the last year despite eating 500 cals less than I need to a day, plus exercising every other day.

My sister has hypothyroidism (badly) and my bro has diabetes type 1.

I still think my issue is my thyroid...

Do you think trialing a thyroid replacement would be a good idea? and which would people recommend for me? How do I go about getting it?

I'd massively appreciate help here as I have no idea what I'm doing.


8 Replies

  • Pollyerrington,

    TSH 2.0 indicates thyroid is beginning to struggle but T4 and T3 levels are good. I'm not convinced that trialling Levothyroxine will be helpful.

    I would concentrate on improving ferritin which is very low and will cause fatigue. Supplement iron with 100mg vitamin C to aid absorption.

    B12 is suboptimal so supplementing to raise levels will be helpful and may resolve the numbness and pins and needles. You should take a B Complex vitamin with methylcobalamin. Folate is good.

    Ask GP to test vitamin D or order a vitD test from City Assays. VitD deficiency and low vitD cause joint pain.


    I am not a medical professional and this information is not intended to be a substitute for medical guidance from your own doctor. Please check with your personal physician before applying any of these suggestions.

  • When there is more than one family member with thyroid issues there is a possibility of a genetic thyroid condition. I have been researching this: Impaired Sensitivity to Thyroid Hormone (more often known as Thyroid Hormone Resistance). It causes symptoms similar to hypothyroid (including PCOS) and requires very high T3 levels in the body to overcome the resistance.

    If there are other family members with fibromyalgia, CFS, ME, Coeliac Disease, MS, Heart Disease, thyroid or depression this would further support this.

  • My brother has diabetes type 1 as did my grandfather. He also had a stroke. My father has weight issues (but I don't see him so unsure of his diagnosis) and obviously my sis is hypothyroid.

    Interestingly I had glandular fever when I was younger which is linked to ME, and I've also heard it's linked to hypothyroidism.

    Does this mean I should give medication a shot?!

    I'm so confused.

  • Given your family history it is worth trying thyroid medication - T3 is best for this condition. It should fix all your symptoms - low minerals, PCOS, weight etc.

  • Thank you. My GP thinks everything is because of my PCOS. Although I'm now thinking the thyroid caused my PCOS.

    He's put me on the Atkins diet for 2 months to see if it helps.

    After that I'll try getting some T3 replacement medicine. Thanks.

  • Yes, your thyroid definitely caused your PCOS.

    Part of your weigh gain will be fluid and T3 treatment will quickly get rid of it. Also your metabolism is running too slow which causes weight gain. With adequate T3 medication your metabolism will speed up and weight loss is much easier.

  • Hi, sorry to ask so many questions... Taking family history out of it, and given my test results, would T3 still be the right choice? I just want to make sure I'm following the right route. Thanks!

  • The active thyroid hormone is T3 so it is what the body needs to function correctly.

    The body can make T3 from T4 but this introduces a step which can cause problems.

    The standard approach with hypothyroidism is to start with T4, if that does not work then T4/T3 combination and if that does not work T3.

    With thyroid hormone resistance T3 is the best choice.

You may also like...