If I see no change in 4 weeks on LDN, am I a non-responder?

If I see no change in 4 weeks on LDN, am I a non-responder?

What does it mean if I tapered up to 2.5 milligrams over the past four weeks, I've seen no change in symptoms, good or bad. Am I just a non-responder? Do I potentially need a higher dose?

Just because you've had no symptom change or no side effects when at  2.5 mg does not mean it should stop. Get to 4.5 mg and stay there for three months. If you keep a diary of symptoms that you're getting, you might find that over the three month period, the inflammation is gradually reduced biologically and symptoms improve over time. LDN can take a number of months to work properly for you. So don't give up. Do keep going. Get to your 4.5 mg and stay there for at least three months before making a decision.