Using Drugs to Promote Health

Chapter 7 Lesson 1

Developing Vocabulary Answers

1. I. Tolerance2. H. Side Effect3. A. Drug4. C. Over the Counter5. G. Psychological Dependence6. D. Pharmacist7. B. Medicine8. J. Withdraw9. F. Prescription Drug10. E. Physical Dependence

Ways Drugs Enter the Body

A drug is a substance other than food that changes to way the mind or body works.

Drug Misuse Drug AbuseIncorrect use of a legally purchased drug.Innocent misuse.Taking the wrong dosage on accident.Could have life threatening side effects.

Use of an illegal drug.Intentional misuse of a legal drug.Taking a prescription meant for someone else.Life threatening side effects.

Ways drugs enter the body

Medicine is a drug that is used to treat, prevent, and/or relieve illness symptoms.

Antibiotics fight disease Cough suppressants

relieve symptoms Vaccines prevent

disease

Ways Drugs Enter the Body

Drugs and the cells of the body are like keys and locks. A key (drug) can only open up certain locks (cells) Receptor sites on cells are similar to locks on doors.

How Drugs enter the Body

In order from quickest acting to slowest… Injection

Absorption

Inhalation

Swallowing (mouth)

How Drugs Effect the Body

Drugs may act on more than one receptor site at a time. Causing Side Effects A side effect is an unwanted change in the body

that is not related to the main purpose of the drug.

Example: If you take an asprin for a headache, sometimes it will give you a stomach ache if you don’t take it with food.

Get Creative!

We discussed how the drug and body cell are like a lock and key. The drug can only fit in one receptor cell on the cell.

Your task: Draw a representation of the “lock and key” or the

drug and its receptor. Be creative. Do not draw a lock and key. Find another way to represent the drug locking on to the body cell. Use color. Label the drug and the receptor.

Factors that Determine a Drug’s Effect

The way the drug enters the body

The dose or amount of the drug taken

The solubility of the substance Water soluble drugs leave

the body quickly, fat- soluble drugs can stay for weeks to months

The weight, age, and health status of the person

The emotional state of the person

Whether the person is taking more than one drug at a time.

Factors that Determine a Drug’s Effects

Drugs can cause unwanted effects, the most serious being dependence. Drug dependence is the continued need for the effects of a

drug even when those effects harm the body, mind and relationships.

Psychological Dependence- strong emotional desire to continue to use a drug

Physical Dependence- a condition in which someone develops a tolerance for a drug or shows withdraw symptoms without it.

How Drugs Affect the Body

Tolerance is what happens when the body becomes used to a drug and needs a larger amount to produce the same effects.

Withdrawal symptoms are unpleasant reactions that occur when a drug is no longer present in the body.

Prescription and Over-the-Counter Drugs

Prescription Drugs- a medication that can only be obtained with a written order from a physician. Brand name drug has a registered name or

trademark assigned to it by the company that makes it. (Lipitor)

Prescription and Over-the-Counter Drugs

A Generic Drug is a drug that contains the same active ingredients as a brand-name drug, but has no registered trademark. Generic Drugs are usually less expensive.

Prescription and Over-the-Counter Drugs

An over the counter (OTC) drug is a drug that people can buy without a physician’s prescription. OTC drugs include:

Pain relievers Some Allergy medications Cough syrups

Prescription and Over-the-Counter Drugs

Regardless of whether the medicine you are taking is a prescription or an over the counter drug, you should read all of the warnings and dosage information to ensure that you do not have any unwanted side effects. Do not use the medication it is past its expiration date. If the tamper resistant seal is broken, take the medication

back. If the label says the medication may cause drowsiness, do

not engage in an activity such as riding a bike.

Use and Misuse

In your groups, you will be examining an OTC label. Each group will have one container. You will need to find all or most of the information asked for in the “OTC Seek and Find” worksheet.

Following this, each student will need to explain one way the drug could be misused and the possible effects of misuse.

You will have 3-4 minutes with each container.