How can we stop such unethical & unhuman practices from doctors i.e. testing on humans?

I myself is a Nurse and for me to stop unethical issues with the doctor we should always chart and note every conversations between the doctor and the nurses. Note everything that has been said and done every procedure for legal purposes.

 My friend ,  is to the medical profession is very important doctors are angels of mercy are with humanity profession because they are the reason for the ease our pain and this profession you need to the secretariat severe if the doctors violating this trust switched from angels of mercy to demons and this is very dangerous and must be that emphasizes punishment on those devils even be an example to others 

I fully agree with the answer been added by MR  Haytham Ahmed.......................Thanks.

Being Human by any human being is a  must. If found not being human, punishment must be appropriate and for professionals like Doctors, no excuse should be allowed as they are only one who are entitled to deal with human physically.

Science-based medicine depends upon human experimentation. Scientists can do the most fantastic translational research in the world, starting with elegant hypotheses, tested through in vitro and biochemical experiments, after which they are tested in animals. They can understand disease mechanisms to the individual amino acid level in a protein or nucleotide in a DNA molecule. However, without human testing, they will never know if the end results of all that elegant science will actually do what it is intended to do and to make real human patients better. They will never know if the fruits of all that labor will actually cure disease. However, it is in human experimentation where the ethics of science most tend to clash with the mechanisms of science. We refer to “science-based medicine” (SBM) as “based” in science, but not science, largely because medicine can never be pure science. Science has resulted in amazing medical advances over the last century, but if there is one thing that we have learned it’s that, because clinical trials involve living, breathing, fellow human beings, what is the most scientifically rigorous trial design might not be the most ethical.

Strong regulation against such unethical practices, from Govt side, is a must.  Moreover Strict and honest implementation also to be ensured by authorities. Punshments for law bearkers have to be exemplary. However general public, and specially the educated, the intelligentia, the society leaders, opinion builders, the media including social media, should remain vigilant and should bring the identities of such doctors, using unethical practices, to the appropraite authorities. Moreover, wthout naming anybody, such hospitals/insititutions/doctors should be exposed in media/social media, so that simple people are protected from becoming target.