Peptide Encyclopedia

Investigational. Not approved by the FDA, the EMA or any other regulator.

Survodutide

Survodutide (BI 456906), glucagon receptor / GLP-1 receptor dual agonist

4231.69 g/mol →

Mazdutide approved in China only. Survodutide and cagrilintide remain investigational and are not approved in any country.

Survodutide, Mazdutide and Cagrilintide

Survodutide (BI 456906), mazdutide (IBI362 / LY3305677) and cagrilintide (AM833)

Survodutide: approximately 4231.7 g/mol →

Active research

TB-500

Thymosin Beta-4 Fragment

4963.50 g/mol →

FDA Approved (2010)

Tesamorelin

trans-3-hexenoyl-human growth hormone-releasing factor (1-44) amide

5135.86 g/mol →

Registered as a medicine in Russia; not approved by the FDA or the EMA; evidence base largely Russian-language and non-randomized

Thymalin

Thymalin (polypeptide complex extracted from calf thymus)

Not applicable: mixture of polypeptide fractions, most described below 10 kDa →

Approved as a drug (thymalfasin/Zadaxin) in some countries; not FDA/EMA approved — investigational elsewhere

Thymosin Alpha-1

Thymosin Alpha-1 (Thymalfasin, Tα1)

3108.30 g/mol →

Research use only — not approved for human use

Thymosin Beta-4 (TB4)

Thymosin Beta-4 (Tβ4)

4963.44 g/mol →

FDA/EMA Approved

Tirzepatide

Dual GIP/GLP-1 Receptor Agonist

4813.45 g/mol →

Endogenous human neuropeptide. Not approved as a standalone medicine in the US or EU. Investigational (aviptadil); approved only in a fixed combination for erectile dysfunction in some European countries.

VIP

Vasoactive Intestinal Peptide (synthetic form: aviptadil)

~3326 g/mol →