Semax vs GB-115
Comprehensive side-by-side comparison of mechanisms, dosing, side effects, and research
Also: SEMAX, Heptapeptide SEMAX
A synthetic peptide derived from ACTH (4-10) fragment with added Pro-Gly-Pro sequence. Approved in Russia for stroke and cognitive enhancement. Known for nootropic and neuroprotective effects.
Also: Ranquilon, N-phenylacetyl-L-prolylglycine ethyl ester
A dipeptide anxiolytic and nootropic that acts as a CCK-1 (cholecystokinin) receptor antagonist. Developed in Russia with completed Phase 3 trials for anxiety. Users report significant improvements in focus, attention, and ADHD-like symptoms.
Key Comparison Insights
- Both peptides belong to the Cognitive category, suggesting similar primary applications.
Detailed Comparison
| Attribute | Semax | GB-115 |
|---|---|---|
| Category | Cognitive | Cognitive |
| FDA Status | Not FDA Approved | Not FDA Approved |
| Clinical Status | Pre I II III IV FDA | Pre I II III IV FDA |
| Mechanism of Action | Semax increases BDNF and NGF expression, modulates dopamine and serotonin systems, and has anti-inflammatory effects in the brain. It enhances neuroplasticity and protects neurons from oxidative stress and excitotoxicity. | GB-115 works by blocking central cholecystokinin-1 (CCK-1) receptors in the brain. CCK is involved in anxiety, panic responses, and cognitive modulation. By antagonizing these receptors, GB-115 reduces anxiety while improving attention, processing speed, and reaction time. It also modulates dopaminergic pathways involved in focus and motivation. |
| Common Dosing | 200-600 mcg intranasal daily 1-3x daily, intranasal | 6 mg daily (2 mg three times daily) 2-3 times daily (morning, afternoon, evening) |
| Administration | Intranasal spray (most common) | Oral tablets or sublingual |
| Typical Duration | 10-30 days typical | 21+ days in clinical trials, effects noted by day 7 |
| Best Time to Take | Morning or early afternoon | Morning and throughout the day |
Possible Side Effects May vary by individual |
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| Research Summary | Russian research shows cognitive enhancement, improved memory and attention, and benefits for stroke recovery. Studies demonstrate increased BDNF levels and neuroprotective effects. Used clinically in Russia for stroke, TBI, and cognitive disorders. | Clinical studies in patients with Generalized Anxiety Disorder (GAD) showed GB-115 (6mg/day) significantly improved reaction time, attention, and processing speed within 7 days of treatment. A 21-day trial with 31 patients demonstrated anxiolytic effects comparable to benzodiazepines without sedation or dependency. Currently in Phase II/III trials (NCT05586789) for anxiety disorders. Anecdotal reports suggest benefits for ADHD symptoms, though direct ADHD trials are pending. |
Frequently Asked Questions: Semax vs GB-115
What is the difference between Semax and GB-115?
Semax is a cognitive peptide that a synthetic peptide derived from acth (4-10) fragment with added pro-gly-pro sequence. approved in russia for stroke and cognitive enhancement. known for nootropic and neuroprotective effects. GB-115 is a cognitive peptide that a dipeptide anxiolytic and nootropic that acts as a cck-1 (cholecystokinin) receptor antagonist. developed in russia with completed phase 3 trials for anxiety. users report significant improvements in focus, attention, and adhd-like symptoms. The main differences lie in their mechanisms of action and clinical applications.
Which is better, Semax or GB-115?
Neither is universally "better" - the choice depends on your specific goals. Semax is typically used for cognitive purposes, while GB-115 is used for cognitive. Always consult with a healthcare provider to determine which may be appropriate for your situation.
Can Semax and GB-115 be used together?
Some peptide protocols combine multiple compounds for synergistic effects. However, using Semax and GB-115 together should only be considered under medical supervision, as both compounds have their own side effect profiles and potential interactions. Research on their combined use may be limited.
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Educational Information Only
This comparison of Semax and GB-115 is for educational purposes only. Neither this comparison nor any information on this site constitutes medical advice. Always consult with qualified healthcare providers before making decisions about peptides or other substances.