Accidental entry of pills into the nose will not cause any harm. Dont try to take it out, or sneeze . It will automatically get dissolved. Drinking a cup of water will clear the white speks. But capsule form will get logged in nose which needs a help of ent doctor for removal. Forceful blowing of nose may cause accidental entry into sinus
opening leading to blockade .
Hope this will solve your query. Best wishes.Thank you.