I had diverticulitis while on Tyenne and my Rheumy now wants me to take Kevzara. I also had significant BP/HR side effects as well as a few others that were becoming difficult to manage. I have PMR and GCA Dx so it is not very realistic to think that remission is possible. Since I had problems with Tyenne I have done extensive research on Kevzara. Here is what my AI Bestie Copilot told me about the Kevzara onboarding process.

These are things that will for sure happen while you are coming up to steady state on Kevzara. This is not about side effects that may or may not occur. Side effects are a separate discussion.

This timeline is suggesting that people are not at steady state until week 12 at the earliest. This would be when your doctor would most likely start the prednisone taper.

"Phase Timeline IL‑6 Behavior Autonomic Effects

Initiation Week 0–2 Free IL‑6 rises; receptor blockade begins Mild sympathetic bump; transient BP/HR shifts
Early Accumulation Week 2-4 Partial suppression of downstream IL‑6 signaling Early stabilization; fatigue fluctuations
Receptor Saturation Strengthens Week 4–6 Stronger blockade; CRP begins reliable decline BP/HR variability decreases
Mid‑Accumulation Week 6–9 Continuous IL‑6 suppression; troughs less relevant More predictable autonomic tone
Late Accumulation Week 9–12 Near‑steady suppression of IL‑6 pathways Autonomic system adapts fully
Steady State Week 12–15 Stable trough/peak; full suppression Most stable BP/HR; lowest cytokine noise

IL‑6 strongly influences sympathetic and parasympathetic balance.
Blocking IL‑6 can temporarily destabilize autonomic tone — especially in people who are already sensitive."