However, depending on the context, you could use some options like:
* Regimen: This refers to a planned course of action, especially a medical treatment plan.
* Therapy: This is a broader term, referring to the treatment of illness or injury by non-surgical means.
* Course: This refers to a series of treatments, often in a medical context.
* Suite: This can be used to describe a set of related treatments, such as a spa suite offering various treatments.
* Protocol: This refers to a set of rules or procedures to be followed in a particular situation, including medical treatments.
Ultimately, the best choice will depend on the specific context and what you are trying to convey.