THIS POWERPOINT PRESENTATION IS AN EASIEST BRIEF GLANCE ON THE DRUGS THAT ARECOMMONLY USING IN DE ADDICTION. THIS PRESENTATION WILL BE HELPFUL FOR THOSE WHO ARE STUDYING PHARMACOLOGY PARTICULARLY NURSING AS WELL AS ALLIED HEALTH STUDENTS.
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DRUGS USED IN DE-ADDICTION Dr. niby , pharm -d Assistant professor Little flower college of pharmacy Bangalore.
terminologies ADDICTION- It relates to a strong psychological or physiological dependence on a substance, such as alcohol, hashish, ganza , opium, and drugs. DRUG DEPENDENCE- It describes two important conditions: a) a state arising from repeated, periodic or continuous use of a drugs. b) a state when drug taking becomes compulsive and takes precedence over other needs. DRUG ABUSE- It includes certain volatile substances e.g. lacquer paint solvents, petrol, nail polish remover etc. that may critically affect CNS are also inhaled by drug seekers. This type of drug abuse was earlier classified as ‘ SUBSTANCE ABUSE ’.
SUBSTANCE DEPENDENCE- The substance abuse are usually of two types- PSYCHOLOGICAL DEPENDENCE- which is characterised by following symptoms: a) Drug seeking behaviour (craving) moderate and for personal satisfaction; e.g : cigarette smoking b) Withdrawal effects are less frequent and mild c) Tolerance is usually absent PHYSICAL DEPENDENCE- which is characterised by following symptoms: a) Intense craving for the drug, e.g. alcohol, use of opioids . b) Withdrawal effects are severe. c) Tolerance is present.
TOLERANCE- It refers to the decrease in pharmacological effect on repeated (successive) administration of the drug. WITHDRAWAL SYNDROME [or ABSTINENCE SYNDROME]- It categorically describes the physical and physiological adverse effects after stopping use of a drug. [ NOTE: Recently, the American Psychiatric Association has recommended use of a single term “substance dependence” in place of many confusing terms such as: habituation, addiction and drug dependence.]
Classification of drugs of abuse: The following drugs are regarded to be the common drugs of abuse, namely: 1. NARCOTICS- E.g : Heroin, Morphine, Codeine. 2. CNS(Central nervous system) DEPRESSANTS- E.g : Alcohol, Barbiturates, Non- Barbiturate Sedatives and Antianxiety Drugs. 3. CNS(Central nervous system) STIMULANTS- E.g : Cocaine, Amphetamines, Anorectics 4. HALLUCINOGENS- E.g : Lysergic acid diethyl amide(LSD), Psilocybins , Mescaline 5. CANNABIS PREPARATIONS 6. MISCELLANEOUS: E.g : Nicotine, Paint Thinner, Acetone, Nail Polish Remover And Petrol.
Pharmacological approaches to treat drug dependence The main pharmacological approaches to treat drug dependence and withdrawal are of five critical variants, namely : Short term or long term substitution of abused drug by a similar drug. Aversive therapies to induce unpleasent responses. Use of an antagonist to block the effects of abused drug. Use of such drugs which modify craving for the abused dug Rehabilitation and psychological interventions .
Opioid addiction is one of the oldest addictions of mankind. The group of drugs essentially include: Heroin, Morphine, Codeine And Other Synthetic And Semisynthetic Derivatives. Heroin ( diacetyl morphine) and its crude form known as ‘ brown sugar ’ have widest illicit use. Opioids produce both psychological and physical dependence.. The withdrawal symptoms are manifested by lacrimation , sweating, anxiety, restlessness, rhinorrhoea and tremors. 1. Narcotics addiction
METHADONE: Slowly withdraw the abused drug and substitute it by the long acting agonist(methadone). It is effective orally, it is more potent and as opioid receptor remains occupied for long duration which prevents withdrawal symptoms. The dose is adjusted according to the degree of dependence – 1mg methadone once daily for 4 mg of morphine. It may be withdrawn in tapering doses over a period extending to a couple of weeks. TREATMENT FOR NARCOTIC DEPENDENCE
2. NALTREXONE: A long –acting orally active opioid antagonist Dose- 100-150 mg thrice times in a week to the patients who are detoxified by giving methadone therapy. 3.CLONIDINE: A centrally acting alpha- agonist can reduce some of withdrawal symptoms like : hypertension, anxiety, vomiting, nausea and diarrhea. It is given for 7-10 days and withdrawn over 3-4 days.
ALCOHOL ABUSE- It is a major drug problem in the various societies. Depending upon blood concentration, acohol may cause : -euphoria ( 50mg/dl ) - impaired motor coordination, concentration and memory( 100-150 mg/dl ) - profound cardio respiratory depression and coma ( 300-400 mg/dl ) Withdrawal of alcohol after several week of consumption results in tremors, anxiety, confusion, GIT disturbances, insomnia and delusion. Withdrawal of alcohol after a long period of consumption can lead to delirium, hallucination and convulsions. 2. Cns depressants addiction
SEDATIVES: Use of sedatives or anti convulsants – e.g. Diazepam and barbiturates. PSYCHIATRIC COUNSELLING: For chronic alcoholism AVERSION THERAPY: DISULFIRAM – It blocks an enzyme that is involved in metabolizing alcohol intake ., which produces very unpleasant side effects(flushing, sweating, increased thirst, swelling, rapid weight gain, neck pain, throbbing headache, blurred vision )when combined with alcohol in the body . Initial dose: 500 mg orally once a day (first 1 to 2 weeks) Maintenance dose: 250 mg orally once a day (range: 125 mg to 500 mg once a day) Maximum dose: 500 mg once a day. TREATMENT FOR ACUTE ALCOHOL WITHDRAWAL
Barbiturates are generally used for induction of anaesthesia and in epilepsy. The short acting barbiturates like: amobarbital , secobarbital and pentobarbital are mostly abused as they produce euphoria [extreme state of perceived well being]. Symptoms of barbiturate intoxication depend on blood levels and also include: blurred speech, confusion, weak pulse, cyanosis, and respiratory failure. Withdrawal symptoms include anxiety, confusion, weakness, anorexia, tremors, hallucination and convulsions. b. Barbiturates dependence:
The incidence of symptomatic chronic barbiturate dependence may be treated by substituting phenobarbital with the abused drug. Taper the dose extended gradually over a period of weeks. Treatment of chronic barbiturate dependence
Cocaine and amphetamine are commonly abused CNS stimulants. Methamphetamine by IV injections produce euphoria and intense pleasurable feelings. Withdrawal results in fatigue , muscle pain, anxiety, visual disturbances, and hallucination. TREATMENT: Supportive therapy with tranquilizers and antidepressants . psychiatric and social counseling is usually employed. 3.Cns stimulants addiction
They are termed as psychomimetics Example: LSD, Psilocybin, Mescaline. These drugs produce hallucinations, euphoria, delusions, mydriasis , increased blood pressure and body temperature. TREATMENT: Immediate advice for adequate rest, reassurance, psychiatric counselling are invariably successful. Benzodiazepines (diazepam)can also be used effectively. 4.hallucinogens
Synonym- Marijuana. It is obtained from the leaves and flowering tops of hemp plants(Cannabis sativa; C.indica ). Its products are Hashish,Charas , Bhang,Ganja and marijuana. Cannabis withdrawal happens when you have used cannabis for a long period of time, and you suddenly take less or stop taking it. Withdrawal symptoms may start on the first day and may last up to 2 weeks, which involves decreased appetite and weight loss, night sweats and trouble sleeping, craving for cannabis, irritability, feeling agitated, anxious, or restless, depressed or negative mood. TREATMENT: Motivational enhancement therapy ( MET) 5. CANNABIS
NICOTINE is the active ingredient in tobacco. It causes mild CNS stimulation followed by decreased –skeletal-muscle tone and loss of appetite. Long term effect of smoking are: -lung cancer -increased risk of heart attack -Decreased life-span. 6. TOBACCO
NICOTINE TRANSDERMAL PATCH -This medication slowly releases nicotine and provides a consistent low level of nicotine throughout the day . It is available over-the-counter in strengths of 7, 14 and 21 mg. -The main side effects from the patch are local skin irritation and vivid dreams that require removing the patch before bedtime. AMFEBUTAMONE OR BUPROPION - a sustained release (SR) medication that's also used as an anti-depressant. - It alters dopamine levels in the brain, which helps to relieve nicotine withdrawal symptoms. -The most common side effects include headache, insomnia and dry mouth. 3 . CLONIDINE- May reduce withdrawal effects. Treatment of nicotine dependence
It occurs when someone deliberately breathes in the gas or vapours of a substance to purposefully get ‘high’. It is sometimes called ‘ bagging’ , ‘huffing’ or ‘sniffing ’. Volatile inhalants are inhaled to produce CNS excitation and hallucinations. TREATMENT- Provide oxygen, respiratory assistance and other supportive measures to treat acute intoxication symptoms. 7.Volatile inhalants:
Ashutosh Kar,S C Mehta; Basic pharmacology for nurses and allied health professionals. KD Tripathi ; Essentials of medical pharmacology. BIBLIOGRAPHY: