HI Eva,
I agree with Carolyn, the point is not to find a medication free of any aftertaste and side effects, but for your son to be willing to the medication that will enable him to have a good life, even with side effects. A doctor can work with your son on techniques to minimize side effects.
Please, read the Xavier Amador book, I Am Not Sick, I Don't Need Help, which will coach you in how to say what you say to your son to help him see that taking meds would enable him to achieve a life goal. I'm keeping a running ticker of every person who "Ask"s the questiona bout how to convince someone who is in denial to take the meds.
You are question #17 in six months. I will tell you what I told the others: anosognosia, or the lack of awareness that one has an illness, affects up to 50 percent of the people diagnosed with schizophrenia, and is a symptom. Read the Amador book to find ways to encourage your son to take the meds.
You are not alone. Question #18 is going to appear in this forum shortly after yours, and I will tell the family member the same thing about how to go about talking to their loved one.
Lastly, please do not keep trying to convince your son he is sick. That isn't the goal; the goal is medication compliance, and statistics prove that if someone sees a benefit in taking the meds, even if he doesn't believe he's sick, he will take the pills.
Best regards,
Christina