1.1 Types of Drugs: Endogenous, Natural, Semisynthetic and Synthetic

Many drugs can change a person’s thinking and judgment, and can lead to many consequences including: addiction, driving under the influence, adverse effects on pregnancy, many health risks, and infectious disease. Information on commonly used drugs with the potential for misuse or addiction can be found here in the websites below provide additional information on all kinds of medications and commonly misused drugs.

Figure 1.1.1 – Photo by Roberto Sorin on Unsplash

There are four types of drugs:

Endogenous

Endogenous substances and processes are those that originate from within the body or system such as an organism, tissue, or cell.  For example: naturally occurring pain-relieving substance like opioids, vs to opioid drugs like heroin, which are exogenously (outside the body) administered.

Figure 1.1.2 – DNA Photo by Braňo on Unsplash

Natural (both Crude Forms and Refined forms)

Natural substances extracted from plants and animals (chemical and structural diversity and the biodiversity of their components).  These natural sources may avoid the side effects, as they produce physiological and pharmacological effects within living cells, they also have more interaction with proteins, enzymes and other biological molecules.  Examples: marijuana, heroin, (willow tree bark), digoxin (flower Digitalis lanata), morphine (from opium)

Figure 1.1.3 – by Roberto Valdivia on Unsplash

Semisynthetic

A substance made by synthesis from a naturally occurring material.  These natural compounds have many advantageous.   These are a hybrid of natural and synthetic sources, by transforming starting materials from natural sources into final products via chemical reactions.  Examples: antibiotic penicillin, paclitaxel (an anticancer drug derived from the Pacific yew tree)

Figure 1.1.4 – photo by Towfiqu barbhuiya on Unsplash

Synthetic

Drugs are produced via chemical synthesis.  Examples of synthetic drugs are called Designer Drugs which include: bath salts, K2 and are listed on websites  as “plant food” or “bath salts,” however, the powdered form is also compressed in gelatin capsules. The synthetic stimulants are sold in smoke shops, head shops, convenience stores, adult bookstores, gas stations, and on Internet sites and often labeled “not for human consumption. Our bodies have challenges processing synthetic drugs which make them very toxic and dangerous

Figure 1.1.5 – Legal order synthetic smoke, Public domain, via Wikimedia Commons

Neither synthetic nor organic drugs are more dangerous than the other, because both of them have the potential for abuse.  They all cause a chemical reaction in the brain and body, the longer the chemical, organic or synthetic is used the more change it will cause. 

RCMP Drug Identification Chart (identifies drug types, including common street names, effects, and methods of use and detection)

Key Takeaways

To make the most of these resources you should be able to do the following after carefully reading the information they provide:

  • Describe each type of drug in your own words.
  • Explain the benefits and dangers associated with each type of drugs.
  • List several examples of each type of drug.
ATTRIBUTION: This chapter is not covered by the adaptation statement, it is an original work.

References

Guides de Recherche · research guides: Pharmacology: Drug information resources. Drug Information Resources – Pharmacology – Guides de recherche · Research guides at University of Ottawa. (n.d.). Retrieved April 22, 2023, from https://uottawa.libguides.com/c.php?g=265347&p=1772705

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Drugs, Health, Addictions & Behaviour - 1st Canadian Edition Copyright © 2018 by Denise Halsey and Sunil Boodhai is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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