Side-by-Side Comparison · 2026

Physalaemin vs Ranatensin

Physalaemin vs Ranatensin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Physalaemin
Neuropeptide / Tachykinin

Physalaemin is an 11-residue tachykinin peptide first isolated from the skin of the South American frog Physalaemus fuscumaculatus. It shares the conserved tachykinin C-terminal sequence Phe-X-Gly-Leu-Met-NH2 with substance P, eledoisin, and kassinin....

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Ranatensin
Neuropeptide / Tachykinin

Ranatensin is an 11-residue tachykinin peptide isolated from the skin of the North American frog Rana pipiens. It belongs to the same tachykinin family as substance P and physalaemin, sharing the conserved C-terminal Phe-X-Gly-Leu-Met-NH2 sequence....

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Key Parameters
Parameter Physalaemin Ranatensin
Category Neuropeptide / Tachykinin Neuropeptide / Tachykinin
Research Preclinical Preclinical
Half-Life Short (minutes) Short (minutes)
Typical Dose N/A (research) N/A (research)
Frequency N/A N/A
Route IV / SC (research) IV / SC (research)
FDA Status Not approved Not approved

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Frequently Asked Questions
What is the difference between Physalaemin and Ranatensin?
Physalaemin: Physalaemin is an 11-residue tachykinin peptide first isolated from the skin of the South American frog Physalaemus fuscumaculatus. It shares the conserved tachykinin C-terminal sequence Phe-X-Gly-Leu... Ranatensin: Ranatensin is an 11-residue tachykinin peptide isolated from the skin of the North American frog Rana pipiens. It belongs to the same tachykinin family as substance P and physalaemin, sharing the cons...
Which has a longer half-life, Physalaemin or Ranatensin?
Physalaemin half-life: Short (minutes). Ranatensin half-life: Short (minutes).
Can you stack Physalaemin and Ranatensin?
Physalaemin and Ranatensin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.