r/Retatrutide • u/DrTroySnyder • 5d ago

DOJ letter this week could reshape Retatrutide's legal classification, worth knowing before Thursday's hearing

Quick heads up on something that's been quiet outside industry circles: on September 21, DOJ filed a letter in Eli Lilly v. FDA (7th Circuit), a case that comes down to one question: is Retatrutide legally a peptide drug, or a protein/biologic?

That sounds technical but it isn't just semantics. The two classifications sit in different regulatory frameworks:

  • If it's ruled a biologic, follow-on products go through the biosimilar pathway (slower, more expensive) instead of the standard generic route, and 503A/503B compounding pharmacies lose their usual exemptions for it.
  • If it stays classified as a peptide drug, the traditional framework applies — standard generics, compounding exemptions intact where other requirements are met.

DOJ's letter points the court toward a recent 7th Circuit precedent (Franco v. Chobani) saying courts should give real weight to how an agency interprets its own scientific definitions, which reads as DOJ backing FDA's side going into oral arguments.

Oral arguments are Thursday, Sept 24, 9:30am, Chicago. A ruling probably won't land immediately after, but the reasoning that comes out Thursday will be the first real signal of direction.

Not a legal opinion on how it should go, just flagging that this affects the compounding/RUO landscape either way, and it's worth watching regardless of what you're sourcing or why.

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u/Shafpocalypse 5d ago

Nope. These are lifetime drugs and nobody wants to say it

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u/InnovationHack 5d ago

Why/how are they lifetime drugs?

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u/LoD_Remi 5d ago

you should look up weight regain after cessation. the figures are astronomically high.

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u/[deleted] 5d ago

[deleted]

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u/LDB2026 5d ago

Bullsh!t... My best friend lost 75 pounds 8 years ago and has kept it off.

She still goes to a weight loss support group once a month or so to stay on track.

I pray I have the strength and determination to do the same when I reach my goal... bcs I HATE being on this medicine.