The most suitable pot is ceramic. Glass is okay. It is important that your pot has a lid. Materials to avoid include cast iron and aluminium. Stainless steel is better than other metals. Teflon coatings are not as good as ceramic.

1. Soak the herbs: Place the herbs in water. The water should cover the herbs by about an inch.     Let them sit for one hour.
2. Boiling the herbs: Bring to a rolling boil. Then turn down to a low simmer. Cook the herbs for     20-30 minutes with the lid on. At the end of the cooking approximately 1 mug of liquid remains.
3. Strain the infusion into a mug.
4. Repeat: Leaving the residue in the pot, add another one pint of water. Repeat the above     cooking method: bring to boil, and then simmer again for another 20-30minutes until about     one mug of liquid remains. Strain the tea again.
5. Mix the two shares together, then divide into two (for one day) or four (for two days) equal     portions to take twice a day. The volume taken each time should not be over 200 ml (about 7 fl.     oz.).

It should be drank warm or at room temperature. If the taste is so unpalatable that you can't drink it, water it down a bit. This helps a great deal. Also, it seems that after time the body begins to crave a certain formula, especially one that is well suited. The taste will become more and more palatable.

6. Taking the medicine at the wrong time (e.g. fertility patients taking the medicine at the wrong     time of her period);
7. The wrong dose;
8. Taking other medication at the same time.