Dear Dr Systrom and Dr Bergquist,
We are a group of people with ME/CFS. We are very excited about your upcoming LIFT trial, not least because we have witnessed countless successes with LDN and Mestinon in our community. We really hope that your trial will be successful, which would make it far easier for many of us to access these sometimes life-changing drugs.
We are writing to you with a concern about the study design. We were surprised to read that you intend to use a starting dose of 1.5mg LDN. Through compiling our experiences over the years, we as a community have learnt that a significant proportion of people with ME/CFS do not tolerate doses that high without a slow titration, including many people who end up benefitting from LDN.
To get a better sense of how many people this concerns, one of us conducted a twitter poll (x.com/elle_carnitine/status/1740025560238305471...) which received more than 300 responses from people with ME/CFS who have tried LDN. (Of course there is no assurance that people answered the questions accurately, but there is also very little reason for anyone to lie, and the results are in line with our community’s knowledge on LDN dosing.) The poll results showed that:
(1) Only 30% of people tolerate 1.5mg without a titration, and 54% could “definitely not” tolerate such a high dose off the bat.
(2) The numbers are worse for people with moderate, severe, or very severe disease: only 24% could tolerate it straight away, and 59% could not.
(3) Approximately two thirds of people who ended up benefitting from LDN could not have tolerated a starting dose as high as 1.5mg.
A subsequent series of polls (x.com/elle_carnitine/status/1740730061999964439...) showed that:
(1) Roughly two thirds of all people with ME/CFS who tried LDN could tolerate 0.5mg as a starting dose, and almost all could tolerate 0.1mg as a starting dose.
(2) Almost everyone who ended up benefitting from LDN could have tolerated 0.5mg as a starting dose.
On the basis of our polls and the experiential knowledge amassed and shared in our community over the years, we think you might have greater success in your trial with a starting dose of 0.5mg, titrating by 0.5mg every week as tolerated. This might reduce the number of participants having to drop out due to dose intolerance, including participants who would have been recorded as responders had they been started on a lower dose.
We hope that you will consider this, and we hope alongside you that your trial will be successful!
Sincerely,