In the US, currently, there are 3 neuromodulator brands available: Botox, Dysport, Xeomin. Botox is supplied via Allergan. Dysport is supplied via Galderma and Xeomin comes from Merz. All 3 work very similarly and equally well, if treated with the correct # of units that are required for that patient. You should ensure the doc is using one of these 3 brands only as anything else is not FDA approved. Make sure you do your research to ensure the provider is a qualified health professional who has experience in the field. Usually only doctors, nurses and physician assistants can administer these injections. Some states have different laws regarding who can inject.