How Long To Wait For Botox Injections After Medrol Medication?

The relaxation effect of Botox on muscles is related to the Botox being a competitive inhibitor in the junction between the nerve and muscle so the signal between the two does not cross the junction. In other words, the nerve can't tell the muscle to contract because the Botox pretends to be a neurotransmitter signal, acetylcholine, and blocks the receptors. Corticosteroids such as Prednisone decreases inflammation but there is no inflammatory response in the nerve muscle communication pathway.

The answer- no time at all.

Botox and Dysport work by interfering with communication between the nerves and the muscles that they serve. Steroids minimize the inflammation from immune response but it should not have any impact on Botox or Dysport injections aside from decreasing the swelling that may occur (rare in any case)

Medrol should not interfere with Botox and Botox will not interfere with Medrol.  These two treatments are totally different and should not interact.