My first post in Healthy Living too
I have had psoriasis my entire life and honestly, I have never found any drug that effectively treats my psoriasis and doesn't have major adverse side effects or health effects or high risks. I have found that changing my lifestyle and using natural remedies has provided a huge improvement. One of the main things that seems to exacerbate it is
stress. Secondly, many recreational drugs can make it worse. Drinking a lot of water, eating very healthy and taking vitamins/supplements (such as Vitamin E, Fish Oil, Vitamin D, Zinc, Calcium, Magnesium, 5-HTP, etc), not bathing too often or using any harsh cleansers, and switching to gentle natural body care products has helped immensely. I use Aveda Scalp Benefits shampoo and conditioner, and a special pH balanced natural cleanser instead of soap. Coconut oil soap seems to be ok too. I also use natural deodorant (they have some great ones at The Body Shop that actually work) and only use natural hair products, nothing containing alcohol, no harsh gels or hairsprays, etc. Bathing in Epsom salts (or swimming in the ocean

) also helps. I know all this stuff takes a lot of effort and it can take a while to see the benefits, but when you are someone who was constantly made fun of about your skin and extremely flaky scalp, not to mention the pain, itching, etc, it is worth it to not have to worry about that any more and also not be putting unnecessary drugs into my body. I have other auto-immune diseases as well but I am not personally comfortable taking immunosuppressive drugs.
I know Bluelight is a drug forum and sometimes people get upset when I suggest alternatives to drugs, but I just thought I would share my experience.
As for DOI, I don't know if there has been any research into the effects or safety of using DOI therapeutically. If it inhibits TNFa, doesn't that make it an immunosuppressant? I would not be comfortable taking it on a daily basis.
There are some foods that act as natural and gentler TNF suppressants, such as green tea and turmeric.