This is really a personal opinion. Now for my rant.
The answer to your question is yes and no. Patients are always provided with all the information, but often it is in a form that even experts would have trouble understanding. Unfortunately, clinical trial ethics often has little to do with what the average person would consider good or evil and, is in my opinion, more about box ticking and arse covering than looking after the real interests of patients.
There is really is no need for special medical ethics beyond what is considered normal ethical behaviour in all other aspects of life. Why we treat participating in a clinical trial differently than we treat participating in other dangerous activities like skydiving or motor racing is hard to justify on logical grounds. I can literally pay you to risk your life driving a car in a motor race with zero outside approval, while paying you to participate in a clinical trial where you are fully informed and the risks are 10,000x smaller is illegal and immoral. Please make it make sense.
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