Nasal Sprays

Peptide Nasal Sprays in Canada | Intranasal Research Peptides

Canada Steroid Depot's nasal spray catalogue offers pre-formulated intranasal peptide solutions for researchers investigating mucosal absorption as an alternative delivery route to subcutaneous injection. Intranasal administration bypasses the gastrointestinal tract and delivers peptides directly to the bloodstream via the nasal mucosa; offering rapid onset, high bioavailability for select peptides, and a completely needle free research protocol.

How do peptide nasal sprays work?

Peptide nasal sprays deliver active peptide compounds directly to the nasal mucosa. The highly vascularized tissue lining the nasal cavity. From there, peptides are absorbed directly into systemic circulation, bypassing first pass liver metabolism and gastrointestinal degradation. The nasal route is particularly well suited to smaller peptides and those with established intranasal bioavailability profiles, such as Selank, Semax, PT-141, and Melanotan II. Each spray delivers a pre-measured dose, eliminating the need for reconstitution or syringe loading.

Nootropic and cognitive peptide sprays

Selank and Semax are the two most extensively researched intranasal nootropic peptides in CSD's catalogue. Selank is a synthetic analogue of the endogenous neuropeptide tuftsin, studied for anxiolytic, cognitive enhancing, and immunomodulatory properties. Semax is a synthetic ACTH analogue originally developed in Russia for neurological research, studied for its effects on memory, focus, neuroprotection, and BDNF expression. Both compounds have demonstrated particularly high intranasal bioavailability and are most commonly administered via the nasal route in research settings.

Melanocortin peptide nasal sprays

PT-141 (Bremelanotide) and Melanotan II are melanocortin receptor agonists most commonly researched for their effects on sexual function, libido, and skin pigmentation. PT-141 acts on MC3R and MC4R receptors in the central nervous system and has been studied extensively for both male and female sexual dysfunction. Melanotan II is a cyclic analogue of alpha-MSH that activates melanocortin receptors involved in pigmentation, appetite regulation, and sexual arousal. Both are available in CSD's nasal spray format for needle-free intranasal administration.

Quality, testing and formulation

Every nasal spray batch stocked by Canada Steroid Depot is independently HPLC tested by accredited third-party laboratories before listing. Results confirm active compound identity, concentration per spray, and solution sterility. Each spray bottle lists the concentration per mL and the volume per actuation so researchers can calculate precise per-dose amounts. Certificates of analysis are available on request for any lot number in our inventory.