Examples of these include some sleep aid tablets such as Nytol , human deworming tablets such as Mebendazole , painkillers with small amounts of codeine (up to mg per tablet), and pseudoephedrine . Medication available only with a prescription is marked somewhere on the box/container with [POM]. Pharmacy-only products are marked with [P]. A prescription is not required for [P] medicines, and pharmacy sales assistants are required by Royal Pharmaceutical Society codes to ask certain questions, which varies for what the customer says. If they ask for a specific product, the pharmacy assistant must ask "Who is it for," "How long have you had the symptoms," "Are you allergic to any medication," "Are you taking any medication" ('WHAM' questions). If a customer asks for a remedy, ., hay fever, then the two WHAM questions must be followed "Who is it for," "What are the symptoms," "How long have you had the symptoms," "Have you taken any action towards your symptoms," and "Are you taking any other medication." It is with this information that the pharmacist can halt the sale, if need be. No [POM], [P] or [GSL] products that are stocked in a pharmacy can be sold, dispensed, or pre-made until a responsible pharmacist is signed in and on the premises. Some medication available in supermarkets and petrol stations is sold only in smaller packet sizes. Often, larger packs will be marked as [P] and available only from a pharmacy. Frequently, customers buying larger-than-usual doses of [P] medicines (such as DXM , promethazine, codeine or Gee's linctus) will be queried, due to the possibility of abuse. 
I have been joyously addicted 3 times in my life. I am 57 and now residing in Thailand. (NO drugs available here ON THE PAIN OF DEATH or life-long imprisonment. I like it.) My first addiction was to the lovely pink pills of “Optalidon”. It is an Italian formulation used as a pain killer. It is available only in Italy and is now doctor controlled. I was 16 years old when I discovered that 25 pills were available from any pharmacist for the equivalent of 75 american cents. I spent a year taking 5, and only 5, pills per day. Being high all day made school fun and raised my grades from B+ to A+. I smoked great hash, drank wonderful wine and tripped on REAL acid from Freshman to Senior year–but the euphoric high offered by these pink pills was unique, long lasting and made me smile like a fool. A year in a group of friends staged an intervention, (I had become far more wacky than they were used to.) So I quit. Spent the day in bed and threw up once and then all was grand.
Flash forward to a severe car crash in the US when I was aprox. 40 to 45 years old. Hospital for two weeks then home with script for 2 Vicodin every 4 hours. Of course that became 1 vicodin in the morning, 1 in the afternoon and the rest maintaining a great high in the evening. I loved them and they were easy to control. When, with no warning, they were cut-off. I missed them but experienced very, very mild withdrawal. A few years later I was depressed and called a friend who knew somebody who could get vicodin in bulk. So I started up again. Maybe it lasted 6 months. Again the easiest possible “withdrawal”.
I have recently started reading about “all those overdoses”. I have a few questions about the coverage:
1. How involved is the DEA in spreading these stories? (A couple Presidents have come right out and said “We have lost the war on drugs”.) If I worked at the DEA I would not want my job eliminated, nor would I want to be transferred by Homeland to where we really need coverage–like the immense dock facilities that are wide open to terrorists!
2. Why is Fentanyl being stuck into the heroin supply? Even the most ignorant drug dealer knows a dead junkie does not buy product!!
3. Why, since Alcohol kills and maims many more people directly and indirectly per year does no story produce graphs or pie charts, or just plain numbers, to let people know that drugs are not the demon we make them out to be.
I do not recommend taking heroin or a version of cocaine. They are both highly addictive and will control you. But everything else: research, beware the seller and enjoy!!!