Tirzepatide at week 7: what the clinical data actually shows

What did @kelly_garis actually say?

Kelly is seven weeks into self-administered compounded tirzepatide, drawing "17 units" from a vial she reconstituted with 2 mL of bacteriostatic water to approximate the 2.5 mg starting dose. She says she's "almost 18 pounds down" in six weeks, split one dose across two injections in a prior week, and is promoting a peptide supplier in her bio with a discount code. That's the short version, and there's a lot to unpack here.

She's describing a regimen that mirrors the FDA-approved starting dose of Zepbound and Mounjaro, but the product she's using is compounded tirzepatide, not the brand-name drug. She doesn't hide that. But she also doesn't say much about what that distinction means for safety or dosing accuracy.

Does the science back up her weight loss claim?

Roughly 18 pounds in six weeks is aggressive but not impossible at the start of a GLP-1 regimen, especially with travel, dietary changes, and water weight in the mix. It doesn't match average trial data, though.

In the SURMOUNT-1 trial (Jastreboff et al., 2022, New England Journal of Medicine), participants on 5 mg tirzepatide lost about 15% of body weight over 72 weeks. Early-phase weight loss is typically faster, driven partly by reduced caloric intake and fluid shifts, but 18 pounds in six weeks would put her well ahead of typical early-trial curves. That doesn't mean she's lying. Individual responses vary widely, and she returned from a trip to Miami, so pre-trip dietary changes or dehydration could be factors. Still, viewers should understand that her result is on the high end of what the data would predict this early.

What did she get wrong, and what did she get right?

The dose math deserves scrutiny. Reconstituting a peptide vial yourself introduces real variability. If her vial concentration is off, or if her syringe calibration is imprecise, "17 units" may not equal 2.5 mg. She's rounding up from 16.67, which is a minor adjustment, but the bigger issue is that compounded tirzepatide is not the same as Mounjaro or Zepbound. The FDA has flagged compounded GLP-1 products specifically for potency and sterility concerns. Calling bacteriostatic water "backwater" is a minor verbal slip, but it points to an informal approach to a process that carries infection risk if done incorrectly.

What she got right: she's not escalating her dose impulsively. Staying at 2.5 mg because she "just feels like I don't need to go up" is actually a reasonable, patient-centered instinct that aligns with how clinicians often advise titrating slowly. The standard protocol is to stay at each dose level for at least four weeks before increasing.

What should you actually know about this setup?

Compounded tirzepatide exists in a regulatory gray zone. The FDA placed tirzepatide on its shortage list, which temporarily allowed compounding pharmacies to produce it legally, but that status has been contested and updated multiple times. As of early 2025, the FDA declared the shortage resolved, which means compounded tirzepatide faces new legal pressure. Buying it through a social media bio link with a discount code is not the same as getting a prescription filled through a licensed pharmacy with clinician oversight.

The discount code promotion here is also worth naming plainly: this is an affiliate arrangement. Kelly benefits financially when people buy from her link. That doesn't make the product dangerous, but it does mean her enthusiasm is not purely informational. Viewers sourcing peptides this way have no guarantee of what's in the vial, and without a prescribing clinician, there's no one monitoring for side effects like pancreatitis, tachycardia, or gallbladder issues, all of which appear in the clinical literature on tirzepatide (Jastreboff et al., 2022).

The bottom line

Kelly's early weight loss is real to her, and her instinct to hold her dose is sound. But her video is also a tutorial on self-directed compounded peptide use with an embedded sales pitch, and that combination carries real risks that her 41,000 viewers may not be weighing. The science on tirzepatide is strong. The science on unsupervised compounded tirzepatide purchased via TikTok bio links is not the same thing.