- What it does
- Retrains the immune response so less histamine gets released
- Where in the chain
- Upstream — reduces the cause
- Onset
- Six to twelve months for measurable shift
- Course duration
- 2–3 years, with continued benefit reported in the immunotherapy literature
- What happens when you stop
- Continued benefit possible (immunotherapy is mechanism-changing, not symptom-suppressing)
- Common side effects
- Mild oral cavity sensations, transient
- FDA pathway
- Compounded prescription (FDA-listed allergens, state-licensed pharmacy)