--- title: "GB-115 Dosage Guide [2026] | BodyHackGuide" url: https://www.bodyhackguide.co/guides/dosage/gb-115 description: "Complete GB-115 dosage guide with protocols, calculator, safety info, and where to buy. Updated for 2026." lang: en --- Skip to content Compare notes on r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Compare notes with other researchers. Join r/BodyHackGuide (https://reddit.com/r/bodyhackguide) Nootropics Approved (Russia) # GB-115 Dosage Guide: Protocols, Calculator & Safety Everything you need to know about GB-115 dosing: protocols, safety, and where to buy. Half-Life Not established in humans; the published rat pharmacokinetic work reported an absolute oral bioavailability of 4.65 percent for the crystalline substance and did not report a terminal half-life (PMID: 18457023) ## Administration Routes Oral Intraperitoneal injection (animal studies) Aerosol spray (form sold on the research chemical market) ### Quick Reconstitution Calculator Calculate syringe units instantly Syringe Draw 10.0 units 2500 mcg/ml · 0.100 ml draw Full Tool (https://www.bodyhackguide.co/tools/reconstitution) For laboratory research use only. This tool performs reconstitution math (concentration and syringe-unit conversion) and is not dosing guidance for humans or animals. Dosing data for GB-115 is being researched. Check the compound page (https://www.bodyhackguide.co/compound/gb-115) for the latest information. ## Side Effects & Safety Preclinical safety work found no deaths after single oral administration at up to 6000 mg/kg in mice and 3500 mg/kg in rats, and no irreversible organ changes after six months of oral administration in male and female rats and rabbits; the compound showed no allergenic, immunotoxic or mutagenic activity and did not affect reproduction or antenatal and postnatal development of offspring, though it suppressed the inflammatory response to concanavalin A at the higher level tested (PMID: 20726348). Rats given the compound daily for 30 days showed no anxiety, aggression or convulsive signs on withdrawal, in contrast to diazepam (PMID: 21899090). In the single published clinical study the drug was described as safe and well tolerated, but that report provides no adverse event table in its abstract (PMID: 31626171). The Russian label for Rankvilon lists irritability, headache, nausea, diarrhea, drowsiness and sleep disturbance as adverse reactions of unknown frequency. Contraindications None established in humans. Mechanism-based: the compound blocks central cholecystokinin receptors (PMID: 23113301), so concurrent drugs acting on that system are an untested interaction. It potentiated morphine analgesia in mice through supraspinal opioid mechanisms (PMID: 18239806), which makes combination with opioids a mechanism-based concern. It also has immunomodulating activity in mice, stimulating macrophage phagocytosis and the humoral immune response (PMID: 19145294), and suppressed an experimental inflammatory response in rodents (PMID: 22235394), neither of which has been characterized in people. Check interactions with the Interaction Checker → (https://www.bodyhackguide.co/tools/interaction-checker) ## Frequently Asked Questions What is the recommended GB-115 dosage? Dosage for GB-115 varies by protocol. Consult a qualified healthcare provider. How often should I take GB-115? Administration frequency depends on the specific protocol. Consult current research literature. Does GB-115 need to be cycled? Cycling requirements depend on the protocol. Follow established research guidelines. What are GB-115 side effects? Where can I buy GB-115? Compare 1 listings from 1 vendor on our price comparison page, starting from $59.99. GB-115 Full Profile Research data, mechanisms, and pricing https://www.bodyhackguide.co/compound/gb-115 Interaction Checker Check drug & compound interactions https://www.bodyhackguide.co/tools/interaction-checker ## Related Dosage Guides All Guides (https://www.bodyhackguide.co/guides) ### 9-Me-BC (9-Methyl-β-carboline) Nootropics · Dosage Guide https://www.bodyhackguide.co/guides/dosage/9-mbc ### Dihexa Nootropics · Dosage Guide https://www.bodyhackguide.co/guides/dosage/dihexa ### Kavain Nootropics · Dosage Guide https://www.bodyhackguide.co/guides/dosage/kavain ### Methylene Blue Nootropics · Dosage Guide https://www.bodyhackguide.co/guides/dosage/methylene-blue Free 2026 Peptide Cheat Sheet (PDF) 38 compounds and blends: vial sizes, BAC water volumes, dosing ranges and bloodwork markers. Download Free (https://www.bodyhackguide.co/guides/peptide-cheat-sheet-download) Image: BodyHackGuide (https://www.bodyhackguide.co/assets/bodyhackguide-logo-DOzZNUyh.webp) ### BodyHackGuide Your biohacking research hub: compound pricing, brain health protocols, dosing tools, and vendor reviews. support@bodyhackguide.co Join our Discord: https://discord.gg/Mhq5UdRYBA r/BodyHackGuide on Reddit: https://reddit.com/r/BodyHackGuide #### Explore - Compare prices: https://www.bodyhackguide.co/compare - Vendors: https://www.bodyhackguide.co/vendors - Deals: https://www.bodyhackguide.co/deals - Coupons: https://www.bodyhackguide.co/coupons - Nootropics: https://www.bodyhackguide.co/nootropics - Brain health: https://www.bodyhackguide.co/brain-health - Blog: https://www.bodyhackguide.co/blog - Guides: https://www.bodyhackguide.co/guides #### Tools - Reconstitution: https://www.bodyhackguide.co/tools/reconstitution - Half-life visualizer: https://www.bodyhackguide.co/tools/halflife - COA reader: https://www.bodyhackguide.co/tools/coa - Cost calculator: https://www.bodyhackguide.co/tools/cost-calculator - Stack builder: https://www.bodyhackguide.co/stack-builder - All tools: https://www.bodyhackguide.co/tools #### Trust & vendors - Vendor directory: https://www.bodyhackguide.co/vendors - Trust scorecard: https://www.bodyhackguide.co/vendors/scorecard - Vendor trust badge: https://www.bodyhackguide.co/vendors/get-vetted - Scoring methodology: https://www.bodyhackguide.co/vendors/methodology - Peptide cheat sheet: https://www.bodyhackguide.co/guides/peptide-cheat-sheet-download #### Company - About: https://www.bodyhackguide.co/about - Affiliate disclosure: https://www.bodyhackguide.co/affiliate-disclosure - Editorial standards: https://www.bodyhackguide.co/editorial-standards - Creators: https://www.bodyhackguide.co/creators - Coaches: https://www.bodyhackguide.co/coaches - 1-on-1 coaching: https://www.bodyhackguide.co/coaching - Privacy: https://www.bodyhackguide.co/privacy - Terms: https://www.bodyhackguide.co/terms - Full site directory: https://www.bodyhackguide.co/site-directory **Affiliate Disclosure:** We rank every vendor on the same public, reproducible methodology (https://www.bodyhackguide.co/vendors/methodology), and we earn a commission from purchases made through some of our links at no extra cost to you. Full details in our affiliate disclosure (https://www.bodyhackguide.co/affiliate-disclosure). **Research Disclaimer:** All compounds listed are for laboratory and research purposes only. Not for human consumption. This site does not sell or ship any products. Always consult a qualified healthcare professional and comply with local regulations. © 2026 BodyHackGuide. All rights reserved. · Terms (https://www.bodyhackguide.co/terms) · Privacy (https://www.bodyhackguide.co/privacy) ## Structured data ```json [ { "@context": "https://schema.org", "@type": "Article", "headline": "GB-115 Dosage Guide [2026]", "description": "Complete GB-115 dosage guide with protocols, calculator, safety info, and where to buy. 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