Preclinical studies are the first stage of drug production. Preclinical studies consist of pharmaceutical testing, tissue-based studies and studies involving laboratory animals.
The following studies are available:
- chemical;
- physical;
- biological;
- microbiological;
- pharmaceutical;
- toxicological, etc.
The aim of preclinical studies is to obtain accurate scientific data concerning the efficiency of drugs and drug safety.
Laboratory animals differ widely from the human body. Their pharmacokinetic characteristics and the reactions of their organs and systems to drugs are different.
Hence, this type of pharmaceutical testing cannot be fully reliable in terms of the drugs’ impact on the human body.
Therefore, clinical drugs studies are necessary in order to study the impact of these drugs on the human body.