Effects range from vomiting and headaches to instances of psychosis, loss of vision, and even sudden cardiac death. And in people with heart conditions and liver dysfunction—both of which the coronavirus can itself cause - it can have severe side effects.
And you have completely moved the goalpost on harm, as you now want to limit the definition to "deaths or great harm". Which of course excludes harms like the difficulty lupus patients, e.g., are now facing in getting it (and its effectiveness in treating lupus is proven). And also excludes the potential harm of wasting money on a drug whose efficacy is still far from clear. And the harm of putting so much on some miracle cure at a time when our focus should be on practical steps we need to be taking now. And the harm to the general credibility of Trump's and our nation's entire strategy for dealing with this by focusing on something that is still so speculative as this treatment. Yup, when I pointed out harm this is causing, you pulled out a "true Scotsman" response. Nicely done.