Naloxone is an opiate antagonist - it blocks the actions of opiates and is routinely used during emergency resuscitation after opiate overdose.
Prescription Only Medicine.
Naloxone may be given by injection into a vein, muscle or under the skin, or via a drip into a vein (intravenous infusion).
Naloxone is specifically used to counteract life-threatening depression of the central nervous system and respiratory system. It is not to be confused with naltrexone, an opioid receptor antagonist, used for dependence treatment rather than emergency overdose treatment.
Naloxone is derived from Thebaine. Thebaine (paramorphine) is a naturally occurring chemical of opium, but has stimulatory rather than depressant effects.
Most areas of the UK have 'street agencies' or projects (sometimes called community drug services or community drug teams) which offer a range of services including information and advice, counselling, and sometimes support groups and complementary therapies such as acupuncture. Some services have extended working hours and may offer weekend support. If use of this substance becomes a problem you can seek help, advice and counselling from a service in your area. GPs can make referrals to specialist drug services. For a description of what the different drug services do, choose helping services from here or the main menu.
Parents & other relatives
Drug agencies also provide lots of advice and support to parents of people using these drugs. Many street agencies can provide relative support groups or counselling for family members, partners etc.