vitamin d3

I have moderate plaque psoriasis since 19yo ,i am 61 now..Areas affected are scalp,elbows,lower back,lower legs,genitals,nails.During the summer i spend a lot of time at the beach and and this helps me heal 80% of my scales.A lot of the scales are covered by the bathing suite so i try to sunbathe nude whenever i can.During the winter i use the usual cortizone ointments that can help me avoid bleeding when scratching the scales but i hate doing it every day and it does not stop relapse.Last year my wife and i decided not to take the covid vaccine and instead follow a protocol that strengthens the immune system as some doctors suggested.This included some nutrition supplements and vitamins.I never look after my nutrition and health so my wife is the doctor(amateur) of the house and i was taking whatever she gave me without checking it.I am not even sure when i started,it was end of september or october,a time of the year when usually my psoriasis starts getting worse as i stop sunbathing.As time went by i realized that i used much less ointment than before and somehow during December i almost didnt need it..My body was 90% better compared to any December past!!It was even better than it is during summer!!I guessed it had to do with the vitamins and supplements i was taking but i didnt know what exactly helped..Anyway i was happy about it but covid was the real enemy then!!Finally we both tested positive for covid in January,it was mild and after 7-10 days we were feeling strong again..Then i stopped taking the vitamins and supplements as i was not in danger any more and i hate taking 5 different pills a day,special powders etc..Eventually 1 month later it was obvious my psoriasis was coming back,i had to find what helped me!!I had a suspicion it was vitamin d3 and i googled about it.I noticed i was taking much more (12-15000 IU) daily than the recommended by the state dose but it was not toxic..So i started again taking d3 and things got better very soon.I recently tested the vitamin d level in my blood and it was normal, suggesting i had a vitamin d deficiency before taking much more than the recommended daily dose.There are recent case studies in the internet with people treated with even higher daily d3 doses and seeing great improvement, maybe you should check your blood d3 level