The medicine is a health-care system applied by the doctor or other certified healthcare professional in the form of instructions that determine the program of care for the individual patient. This term often refers to The healthcare provider's written permission for the patient to buy a prescription drug from the chemist. For much prescriptions to be accepted as the legitimate medical medicine, it requires to be filed by the certified dentist, nurse, chemist, doctor, veterinarian etc., which falls within their remit to prescribe such treatments. That is irrespective of whether they included controlled substances or freely accessible over-the-counter medications.

 For such prescriptions to be accepted as a legal medical prescription, it needs to be filed by a qualified dentist, herbalist, nurse, pharmacist, physician, veterinarian etc., which falls within their remit to prescribe such treatments. This is regardless of whether they included controlled substances or freely available over-the-counter treatments. Prescriptions can be entered into an e-medical record system and transmitted electronically to a pharmacy. Alternatively, a prescription may be handwritten on printed prescription forms that have been assembled into pads, or printed onto similar forms using a computer printer or even on plain paper. In some cases, a prescription may be transmitted from the physician to the pharmacist orally by telephone; this practice may increase the risk of medical error. The content of a prescription includes the name and address of the prescribing provider and any other legal requirement such as a registration number (e.g. DEA Number in the United States). Unique for each prescription is the name of the patient. In more organized systems, the patient's name and address must also be recorded.   

There are some varieties of controlled substances. What we only identified (controlled substances that need the physician’’s medicine) are legitimate prescription drugs, but are prohibited to take if the medicine is not written out to you. But controlled substances also protect illicit drugs , e.g., cocaine, heroin, bliss, and methamphetamine (aka methamphetamine). 

Pharmacists have huge responsibility in preventing shoppers from attaining controlled substances. By watching for fake or altered prescriptions and patients with several prescriptions from multiple physicians, pharmacists have the ability to recognize individuals who may be doctor shoppers. Additionally, many pharmacies have hotlines to alert other pharmacies in the area when a fraudulent prescription has been detected.

Prescription drugs are received in different ways. In some instances, unscrupulous chemists or other medical professionals either take these drugs or deliver fraudulent prescriptions. In the process called doctor shopping, abusers see some physicians to find multiple prescriptions. People likewise ask pharmacies with fraudulent prescription refills, or they change prescriptions. Medicine drugs occasionally exist stolen from pharmacies. Drugs are not products to be compromised or jeopardized in its usage because of the dynamics involved with the administration and metabolism and excretion  which can differ among patient with variable tolerance and allergies.