Hello,
It is true that Granuloma annulare can occur in patients with thyroiditis and due to association with certain medicines like allopurinol, diclofenac, quinidine, calcitonin, amlodipine, ACE inhibitors, daclizumab,
and calcium channel blockers but Mentax is an antifungal
and it does not cause
granuloma annulare. For exact confirmation you are requested to consult your dermatologist.
I hope it helps. Take care and regards.