- What is Semaglutide/Glycine from Rx Peps Direct?
- Semaglutide/Glycine is the same GLP-1 receptor agonist as Semaglutide/B12, formulated with glycine and vitamin B6 instead of cyanocobalamin (B12) as the carrier. The starter vial is $175 for 10 mg total, with a flat $39 medical review. The pharmacy compounds it under Section 503A and Eagle Analytical Services tests every batch for sterility and bacterial endotoxin. The Certificate of Analysis for your lot is published on this page. The active ingredient (semaglutide) and clinical effect are identical to the B12 variant; only the carrier differs.
- How is the Glycine variant different from the B12 variant?
- The active ingredient (semaglutide) is identical, so weight-loss mechanism, dose response, and side-effect profile from the active are the same. The difference is only in the carrier solvent: cyanocobalamin (B12) in the standard formulation versus glycine with vitamin B6 in the Glycine variant. The Glycine variant is typically prescribed for patients with documented B12 sensitivity, MTHFR methylation variants, or whose provider has specifically requested the alternate buffer.
- Why is glycine in the formulation?
- Glycine is a simple amino acid included as a stabilizing buffer. It also has a documented role in glutathione synthesis and hepatic phase-II detoxification, which makes it a clean cofactor in patients undergoing rapid weight loss. Glycine is pharmacologically inert with respect to GLP-1 receptor activation; the amount included as a buffer is well below typical dietary glycine intake. The B6 (pyridoxine) supports homocysteine metabolism.
- Is the dose ladder the same as the B12 variant?
- Dosing matches standard semaglutide because the molecule is the same. Your provider titrates per your response and tolerance, typically starting at 0.15 mg twice weekly and stepping up every 4 weeks if tolerated. The Glycine starter vial is 10 mg total at $175.
- How long is the Glycine variant stable in the fridge after first use?
- Semaglutide/Glycine vials carry a Beyond Use Date (BUD) that a licensed U.S. 503A compounding pharmacy assigns and prints on the vial label. Refrigerate unopened vials at 36 to 46 degrees Fahrenheit. Once opened, keep the vial in the fridge and use it until it is empty or it reaches the date printed on its label, whichever comes first. Do not freeze.
- Does Semaglutide/Glycine cause less nausea than other compounded semaglutide?
- There is no large-scale trial data comparing the Glycine carrier head-to-head with the B12 carrier for nausea outcomes. Anecdotally, some patients with documented B12 reactions report better tolerability on the Glycine variant. Most nausea on semaglutide is tied to the active mechanism (slowed gastric emptying), which is identical regardless of carrier. The most reliable nausea-mitigation strategies are slow titration, smaller and more frequent meals, hydration, and using ondansetron PRN if your provider prescribes it.
- How is Semaglutide/Glycine made and tested?
- A licensed U.S. 503A compounding pharmacy compounds Semaglutide/Glycine in a USP <797>-compliant sterile cleanroom under a 503A patient-specific prescription. Every batch is tested before release by Eagle Analytical Services, an FDA-registered, A2LA ISO 17025-accredited independent laboratory. Sterility is tested using the ScanRDI or Celsis platform; bacterial endotoxin is tested under USP <85>. The Certificate of Analysis for the specific lot you receive is published on this page.
- Can I take Semaglutide/Glycine alongside other GLP-1s?
- No. Do not stack Semaglutide/Glycine with semaglutide from any other source (Ozempic, Wegovy, or other compounded semaglutide); they are the same active ingredient and stacking causes overdose. Do not stack with tirzepatide or other GLP-1-class medications such as liraglutide (Saxenda). Your Rx Peps Direct provider verifies your current medications during intake and will block any conflicting prescriptions.
- What side effects should I expect on Semaglutide/Glycine?
- The side-effect profile mirrors standard semaglutide: nausea (most common during titration), reduced appetite, constipation, occasional reflux, fatigue in the first 4 to 6 weeks, and rare hair shedding tied to rapid weight loss. Most side effects diminish after 4 to 6 weeks once your body adapts. Severe or persistent symptoms warrant a message to your provider through the dashboard for a protocol review.
- Is the Glycine formulation more expensive than the B12 formulation?
- Yes, month for month. At the starting dose a month of Semaglutide/B12 costs $9.60, against about $58 on the Glycine formulation. At the maintenance dose it is $89.60 a month on B12, against about $159 on Glycine. A Glycine vial ($175 for 10 mg, $425 for 30 mg) holds more than a month's supply, so those monthly figures spread one vial across the months it lasts, up to its 90-day beyond-use date. The difference comes from the glycine and B6 raw materials and the alternate compounding workflow. Rx Peps Direct passes the pharmacy's wholesale pricing through with no markup and adds a flat $39 medical review. The Glycine variant is typically reserved for patients with documented B12 sensitivity rather than as a default.
