Tamoxifen Wockhardt brand

Hi

I'm lookinmg for some advice please.  I was diagnosed with breast cancer in 2017 and have taken tamoxifen for 5 years.  I have been told I have to stay on it for a further 5 years.  Initially I was on a brand called mylan I think but it didn't agree with me and after reading posts on this site asked for the wockhardt brand which I have been taking and had no trouble with except the normal, flushes, weight gain, brain fog and fatigue which I am coping with.  I have tried everywhere to try and get wockhardt this month and was told by Boots that thye think it is being rebranded.  Can anyone please advise me what brand to go on as I haven't got a clue but definitely would not take  mylan again.  I am going to speak to a pharmasist tomorrow but would appreciate any advice you can give me.

Many thanks for reading

Sandy