Homeopathic

Homeopathic remedies contain nothing but water since the original substance has been diluted to the point where not a single molecule remains.

You can't overdose on homeopathic medicine.

His group compared studies of homeopathic treatments with studies of medical drugs.

Therefore, with a slight misgiving that so delicate a creature as an embryo shad might possibly be affected by the homœopathic amount of alcohol still present, I set up my apparatus on the shaded piazza of the hotel.

On the other hand, the pop psychology titles are usually very accessible (hence their popularity) but frequently state the obvious or simply retread the same old ground – the psychological content is so diluted it's positively homeopathic!