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What people mean by tirz, reta, and sema

If you have been reading around, you have seen the short names. Tirz. Reta. Sema. They are not three different brands of the same thing.

Tirz is tirzepatide. Some posts say GLP-2. That is chat slang, and it is the wrong word. GLP-2 is a different hormone. Tirzepatide acts on GIP and GLP-1. On this shop, a tirz listing is one vial of tirzepatide.

Reta is retatrutide. Some posts say GLP-3. That slang does not mean a hormone named GLP-3. Retatrutide is a triple agonist aimed at GIP, GLP-1, and glucagon. On this shop, a reta listing is one vial of retatrutide.

Sema is semaglutide. On this shop, it comes as single 5mg vials.

People mix the nicknames up because the posts are casual. The label on our vial uses the longer name. The price is for one vial. You do not have to buy a case.

The same chemical, other spellings

Public pages in a few languages spell that longer name the way the language usually does. The short names on this shop stay tirz, reta, and sema. A research vial here is not the brand pen those pages describe.

Spanish and Brazilian Portuguese pages write tirzepatida, retatrutida, and semaglutida. Vademecum lists tirzepatida, and Lilly's Spanish Mounjaro page uses the same word. Vademecum lists semaglutida. ANVISA writes Mounjaro (tirzepatida). Estadão sets tirzepatida next to semaglutida. Cardioteca writes retatrutida and says it is not in the Spanish CIMA register. CNN Brasil and G1 use retatrutida for the Portuguese spelling. Those headlines also print weight figures. This note does not repeat them.

German pages write Tirzepatid, Semaglutid, and Retatrutid. The Lilly Deutschland leaflet names the ingredient Tirzepatid. The Novo Ozempic leaflet names Semaglutid. Pharmazeutische Zeitung writes Retatrutid.

French pages write tirzépatide, sémaglutide, and rétatrutide. VIDAL uses tirzépatide. An ANSM note writes Mounjaro (tirzépatide) and Wegovy (sémaglutide). A later ANSM print note writes le rétatrutide, and one line on that page also writes retatrutide without the accent.

Japanese pages write チルゼパチド, セマグルチド, and レタトルチド. The KEGG text of the Mounjaro label gives the ordinary name チルゼパチド, and the Latin name Tirzepatide. GIGAZINE writes セマグルチド and Retatrutide（レタトルチド）. There is no approved Japanese brand for that third name on the page. This shop does not sell マンジャロ.

The Spanish, Portuguese, German, French, and Japanese pages on this shop put that ordinary spelling next to the short name. The other languages here keep tirzepatide, retatrutide, and semaglutide. The vial is still one research vial, shipped free from the USA. Tirz, reta, and sema are the size pages.

If a doctor prescribed you a finished Lilly pen, that is a different product with Lilly's own instructions. Their site is lilly.com. The vials here are research vials. At least 99% pure. The fill is within 10% of the number on the label.

Start here if you want the smallest buy: try one vial.

CNN's April 13, 2026 peptide feature calls Ozempic, Wegovy, Zepbound, and Mounjaro peptides, and treats them as approved medicines. The same wave of coverage spends its length on BPC-157, TB-500, and the other unapproved names. Christopher Robinson, quoted by the Johns Hopkins Hub on September 16, 2026, draws that line in one sentence: a "huge difference" between peptides "approved as medications, such as insulin and GLP-1 weight-loss drugs, and these newer compounds." The quotations are in What CNN, Fox, and the other outlets wrote. A research vial on this shop is not those pens. Retatrutide's unapproved status is on its own page.

연구용 바이알. 21세 이상. 사람이나 동물에게 쓰지 않습니다. 의학적 조언이 아닙니다.