Pharmacist also known as chemist (common wealth English) or druggist (north American and archaically common wealth English) are health care professionals who specialized in the use of medicines.
As they deal with the composition, effects, mechanism of action and proper effective use of drugs.
They are involve in all aspect of medicine delivery to patients; they will prepare and package medication that a doctor has prescribed and also sell medication over the counter.
SERVICES RENDERED BY A PHARMACIST
The services rendered by a pharmacist includes:
1) They prescribed laboratory test: to make sure your medication is save and is having desiring effect pharmacist can order lab tests to see how your body is reacting to a given medicine. This will help the pharmacist ensure the treatment is working appropriately.
2)They prescribe medication: when no diagnosis is needed pharmacist can now prescribe certain medications when no diagnosis by the doctor is needed
3) They prescribe medication for certain minor health problems
4) They adjust a prescription: Your pharmacist can adjust your prescription in order to reduce a drug side effects, manage interaction between two drugs or make sure the dosing regimen suits your schedule; he or she can modify the dosage, form dosage, or quantity of medication to make sure it reaches the therapeutic targets set by your doctor to make sure the treatment is right for you.
Adapted from Wikipedia