I would stop trying to convey how bad it is and start saying what you want them to do. Not on an old paper file but the pattern is familiar.

Same shape here, different drug. The thing that helped was documenting the refusal rather than re-arguing it. They refer rather than write.

Imprint first, country second, colour last. And photograph both sides in daylight. Tolerance was my main issue with a changed taste or smell too.

Imprint first, country second, colour last. And photograph both sides in daylight. How long have you been on a loose blister?

Three questions kill most of the confidence in a thread like this: sample size, blinding, who paid.