If a licensed healthcare provider prescribes a compounded medication containing tirzepatide, the typical dosage regimen involves starting with 2.5 mg once a week for the first 4 weeks, increasing to 5 mg once a week for the next 4 weeks, and then further increasing to 7.5 mg once a week for the following 4 weeks. However, this regimen can vary depending on the pharmacy that ships to your state of residence and your specific needs as determined by your licensed healthcare provider.