She made the switch from 75 mg/day of mepacrine to 100 mg/day of Plaquenil.
Prior to the mepacrine, she did several rounds of anti-parasitics (Alinia, albendazole, mebendazole, ivermectin) with little change in histamine issues but improved health in other ways.
However, the breakthrough only occurred after adding the mepacrine into her overall regime.
Prior to mepacrine she had been on optimum doses of Alinia, fenbendazole, Biltricide, ivermectin, and a short course of Paramomycin.
Deliberate failure to take Mepacrine on a regular and consistent basis led to confidence-eroding "breakthrough infections" when the level of Mepacrine in the blood became too low to control the proliferation of the malaria parasite.
Compounding the failure of disease-prevention measures, members of the Chindit force gave up the suppressive benefits of Mepacrine. The medical officers, facing a situation that appeared insurmountable, gave up, allowing themselves to fall to the low standard set by the men.
Like the British, the Americans relied primarily upon Atabrine (Mepacrine) to suppress and control malaria.