When it comes to drugs, there's a very fine line between use and abuse.

And this is to differentiate pharmacokinetics from pharmacodynamics.

This is different than pharmacodynamics. We're dealing with power.

So when I think of pharmacokinetics, I'm thinking of a drug and I'm thinking of that drug moving through our body.

Now we also look at efficacy of the effects of the drug. Potency refers to the you know how much of the drug is required to get a certain effect but we'll cover all of that later.

So let's jump right in to pharmacokinetics.

Potency is a component of pharmacodynamics but by enlarge, the big thing we're looking at with pharmacodynamics is drug receptor interactions.

Good medicine is bitter to the mouth.

The future holds the promise that new drugs will be developed that are not symptom modifying drugs that simply mask the problem, as we have now, but that will be disease modifying drugs that will actually go right to the root of the problem and attack those glial cells, or those pernicious proteins that the glial cells elaborate, that spill over and cause this central nervous system wind up, or plasticity, that so is capable of distorting and amplifying the sensory experience that we call pain.

Well the concentration changes and that's really what pharmacokinetics is looking at.

PK, pharmacokinetics, is really answering the question of how does the drug concentration change as it moves through the different compartments of your body.

This is a serious medicine.

Do you have any cough medicine?

I was forced to take medicine.

The medication should be administered topically.

This medicine is very effective.

And the easiest way to understand pharmacokinetics is to differentiate it from pharmacodynamics.

That is pharmacokinetics my friend.

This medicine will help you.

The pharmacy is near the hospital.

Where's the nearest drugstore?

Do I have to take this medicine?

My mother made me take some medicine.

The medicine cured him of his illness.

Where's the closest pharmacy?

Oops I forgot my medicine.

Winners don't use drugs.

The medicine made me very sleepy.

This medicine cured me of my cold.

The new medicine saved his life.

I'll give you a painkilling injection.

Are you allergic to any medicine?

This medicine has a strong effect.

I rose up to open for my beloved. My hands dripped with myrrh, my fingers with liquid myrrh, on the handles of the lock.

I rose up to open for my beloved. My hands dripped with myrrh, my fingers with liquid myrrh, on the handles of the lock.

I rose up to open to my beloved and my hands dropped with myrrh, and my fingers with sweet smelling myrrh, upon the handles of the lock.

I rose up to open to my beloved and my hands dropped with myrrh, and my fingers with sweet smelling myrrh, upon the handles of the lock.

Then you shall take the anointing oil, and pour it on his head, and anoint him.

Then you shall take the anointing oil, and pour it on his head, and anoint him.

Then shalt thou take the anointing oil, and pour it upon his head, and anoint him.

Then shalt thou take the anointing oil, and pour it upon his head, and anoint him.

It's how does the drug exert its effects on your body, how powerful is this drug, how potent is it?

Are you taking any medicine regularly?

The medicine didn't do me any good.

I bought these medications for my father.