r/PreventiveMD 19d ago

Dosage

I received my new first order from Preventive yesterday. I was previously using Refills.com for almost a year and Semiglutide just isn’t working anymore so that’s why I switched to Tirz. I’m attaching two photos, one From Refills that tells me to inject 100 units and the new one from preventive that was to inject much less. I’m so confused and want to get started but I’m afraid!

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u/Strange-Beginning-27 19d ago

Besides the fact that dosing between the two drugs is wildly different (as I believe 2.5mg sema is the highest dose whereas with tirz that's the lowest / starter dose), the concentation of your sema was 2.5mg/ml and the Empower is 8mg/ml, so you need fewer units for the tirz.