Retrieved 17 January
A drug can be defined as: Variability in molecular size 2. Variability in shape 3. Variability in chemical nature 4. Variability in degree of ionization 6. Variability in molecular size Smaller sized molecules are easily absorbed than larger molecules. Normally the molecular weight is between but may be higher or lower.
Streptokinase is an example of large molecular weight drug while lithium or nitric oxides are of small molecular weight. Variability in shape Drugs may be globular or linear in structure.
Their shape is modified according to the receptor on which they act. Variability in chemical nature Tertiary compounds are lipid soluble while the quaternary compounds are water soluble. Tertiary compounds can cross the membranes easily as compared to the quaternary compounds.
This is because of the fact that the quaternary compounds are ionized. Variability in degree of ionization Polar or ionized forms of drugs are lipid insoluble. Non polar drugs are water insoluble or lipid soluble.
Ionized forms of drugs can pass through the specific places i. Physical Properties Drugs may be solids, liquids or gases. Examples include halothane and nitrous oxide, both of which are gases.
Solubility of gases is greater than that of liquids, while solubility of liquids is greater than that of solids.
Rational Drug Therapy Administration of the right drug indicated for the disease in right dose through an appropriate route for the right duration. Rational drug therapy applies to the doctor. Drug Abuse Drug when used for non medical purposes is known as drug abuse.
It is the wrong use of a drug other than for the disease e. Misuse of Drug Drug that is not required by the patient i. If violate the quantity or duration of the required drug, it is known as misuse.
Egyptian— Medical Papyrus B.Drug abuse treatment is not "one size fits all." Treatment outcomes depend on the: The goal of drug abuse treatment is to stop drug use and allow people to lead active lives in the family, workplace, and community.
health and safety code. title 6. food, drugs, alcohol, and hazardous substances. subtitle c. substance abuse regulation and crimes. chapter texas controlled substances act.
The Cannabis Youth Treatment Series is a five-volume resource for substance abuse treatment professionals that provides a unique perspective on treating adolescents for marijuana use. SAMHSA also developed the Brief Counseling for Marijuana Dependence: A Manual for Treating Adults – , which guides practitioners on how to help adult .
Euphoria (/ juː ˈ f ɔːr i ə / ()) is the experience (or affect) of pleasure or excitement and intense feelings of well-being and happiness. Certain natural rewards and social activities, such as aerobic exercise, laughter, listening to or making music, and dancing, can induce a state of euphoria.
Euphoria is also a symptom of certain neurological or neuropsychiatric disorders, such as mania. attheheels.com genes that people are born with account for about half of a person's risk for addiction. Gender, ethnicity, and the presence of other mental disorders may also influence risk for drug use and addiction.
The causes of adolescent substance use are multifactorial, but the media can play a key role. Tobacco and alcohol represent the 2 most significant drug threats to adolescents.
More than $25 billion per year is spent on advertising for tobacco, alcohol, and prescription drugs, and such advertising.