It is the antihistamines that make you drowsy and dry up your runny nose. Do not take Sudafed or other decongestants if you have high blood pressure. Use dosages recommended on the label. Tylenol is safe to take if you have ulcer disease. Drink a lot of fluids.
Chicken soup is good.
You may urinate more frequently. That is normal. The best way to know if you are getting enough fluids is to make sure your urine is always clear, like water. Green nasal discharge is not necessarily a bad sign and is often due to a simple virus. If your green nasal discharge does not clear up after one week, you should call for an appointment or antibiotic.