Beginner Glossary

Plain-language definitions of the peptide terms you will see in every issue.

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TB-500 vs. thymosin beta-4: same name, two different molecules

Nov 1, 2026

Inside the TB-500 name puzzle, plus the surprisingly twisty history of the "Wolverine" stack.

Issue #3 Sources: TB-500 vs. thymosin beta-4

Nov 1, 2026

Full source list for Peptide Straight Talk Issue #3.

HHS Names Six Peptides in Compounding Enforcement Policy: BPC-157, TB-500, MOTS-c, Epitalon, Semax and KPV

Oct 28, 2026

The Department of Health and Human Services has released the text of its new peptide compounding policy.

BPC-157, TB-500, KPV, MOTS-c, Epitalon, Semax: six peptides DFA names as the White House weighs pharmacy access

Oct 20, 2026

FDA's interim peptide policy is still under White House review, and its text isn't public. A physician group's statement names six peptides as being at issue. Peptide-medicine physicians and pharmacists want access through licensed pharmacies with safeguards. Critics question the evidence and the process. Review meetings are set for Wednesday and Friday.

Peptide compounding policy reaches White House review—details still to come

Oct 15, 2026

Peptide Straight Talk editorial desk · October 15, 2026

Update: FDA's Oct 2 retatrutide classification letter (drug, not biologic)

Oct 15, 2026

Gray-market peptides: what independent testing can tell us

Oct 12, 2026

Peptide Straight Talk editorial desk · Flash · Sources checked October 11, 2026

A possible new path for peptide access: reported, not official

Oct 9, 2026

Peptide Straight Talk editorial desk · Flash · October 9, 2026 · Reporting checked October 8, 2026

Archive

Flashes, numbered issues, and beginner references from the Peptide Straight Talk editorial desk.