years ago {mid 1980s } when i studied homeopathy & took my boys to one {for recurrent respiritory infections ect.}
the dr, and books i read, said not to eat or drink anything 20-30 minutes before or after taking the tablets, not even toothbrushing. other foods and flavors will compete with the absorbtion

there are different strengths - so depends on that as to how many tablets to take.
there are links for homeopathic near the bottom of the list in our sticky thread.