GLP-1 vs Insulin Glargine
Head-to-head comparison of GLP-1 (Glucagon-like peptide-1 (7-36 amide)) and Insulin Glargine (Insulin glargine (A21Gly,B31Arg,B32Arg human insulin analog)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | GLP-1 | Insulin Glargine |
|---|---|---|
| Category | Diabetes & Metabolic | Diabetes & Metabolic |
| Full Name | Glucagon-like peptide-1 (7-36 amide) | Insulin glargine (A21Gly,B31Arg,B32Arg human insulin analog) |
| Molecular Weight | 3297 Da | 6063.6 Da |
| Half-Life | 1-2 minutes | About 12-24 hours |
| Amino Acids | 30 | 51 |
| Typical Dose | Research-only: 0.1-1.0 pmol/kg/min | 0.1-0.2 U/kg once daily |
| Route | Intravenous/Subcutaneous | Subcutaneous |
| Purity | ≥98% | ≥98% |
| Studies Count | 1200 | 13000 |
| Research Status | Pre-clinical | Approved |
GLP-1 Benefits
- ✓beta-cell protection
- ✓improved insulin secretion
- ✓slower gastric emptying
- ✓lower postprandial glucose
Insulin Glargine Benefits
- ✓Once-daily basal coverage
- ✓Smooth action profile
- ✓Lower nocturnal hypoglycemia risk
- ✓Improves fasting glucose control
GLP-1 Dosing
0.1-1.0 pmol/kg/min IV infusion in research|0.5-10 nM in vitro|continuous delivery in animal studies
Insulin Glargine Dosing
Inject SC once daily at the same time each day|Titrate every 3-4 days to fasting glucose targets|Can be combined with prandial insulin
GLP-1 Side Effects
- ⚠nausea at pharmacologic exposure
- ⚠tachyphylaxis with continuous exposure
- ⚠headache
Insulin Glargine Side Effects
- ⚠Hypoglycemia
- ⚠Injection-site reactions
- ⚠Weight gain
Research Overview
GLP-1
Native GLP-1 has a very short half-life because of rapid DPP-4 cleavage, so it is mainly used as a mechanistic research peptide. Across animal and cellular studies it reduces beta-cell apoptosis, improves insulin gene expression, and enhances islet resilience.
Insulin Glargine
Clinical and translational studies support its use as a basal comparator because of prolonged absorption and stable glycemic control. It is heavily used in basal-bolus regimen research and insulin-delivery optimization studies.
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