Common
antidotes
The
most common modern substance which has antidotal effects on remedies is coffee. Not all
remedies are antidoted by coffee so if you want to make sure, look up the
antidotes in a materia medica. Clarke's Dictionary of Practical Materia
Medica is the most thorough reference.
Other possible antidotes can be black or green
teas, herbal teas such as chamomile, and any over-the-counter cold remedy
containing camphor. Prescription drugs or street drugs will mask symptoms but
not necessarily antidote them.