- What is Semaglutide/B12 from Rx Peps Direct?
- Semaglutide/B12 is a compounded injectable that pairs semaglutide, a GLP-1 receptor agonist, with cyanocobalamin (vitamin B12). Semaglutide is the same active ingredient as Ozempic and Wegovy. Vial sizes start at $9.60 for the 1.2 mg starter, step up through 2.4, 4.4, 6.8, 8.2 and 11.2 mg titration vials, and go up to a 30 mg vial for refills, with a flat $39 medical review. The pharmacy dispenses the prescription 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.
- Does compounded semaglutide work the same as Ozempic or Wegovy?
- Compounded semaglutide uses the same active ingredient as Ozempic and Wegovy: semaglutide. The pharmacology, dose-response, and weight-loss mechanism are identical because the molecule is the same. The compounded version a licensed U.S. 503A compounding pharmacy dispenses is co-formulated with cyanocobalamin (B12), which is a formulation convention rather than an evidence-based addition: B12 does not raise energy in people who are not deficient, and it has no effect on GLP-1 receptor activation. The pivotal STEP-1 trial reported approximately 14.9 percent mean body weight loss at 68 weeks on semaglutide; that data applies because the active is the same.
- What is the starting dose of compounded semaglutide?
- The Rx Peps Direct starting dose is 25 units (0.15 mg) on a U-100 insulin syringe, taken subcutaneously twice weekly. Your provider may adjust based on your medical history. The vial ladder runs 1.2 mg, 2.4 mg, 4.4 mg, 6.8 mg, 8.2 mg, and 11.2 mg, with 12.5 mg, 15 mg, 20 mg, and 30 mg refill vials, all at pharmacy wholesale pricing. Titration is typically every 4 weeks if tolerated, mirroring the manufacturer-recommended Wegovy schedule.
- How many units is 0.25 mg of semaglutide on a U-100 syringe?
- On a U-100 (insulin) syringe, 0.25 mg of semaglutide drawn from a 1 mg/mL starter vial equals 25 units (0.25 mL). The unit conversion depends on your specific vial concentration; always verify the concentration printed on your label before drawing. A licensed U.S. 503A compounding pharmacy ships multiple concentrations across the titration ladder for Rx Peps Direct prescriptions, and your shipment includes a per-vial unit conversion table for safety.
- Why does the formulation include cyanocobalamin (B12)?
- Cyanocobalamin is a stable form of vitamin B12 that supports red blood cell production and energy metabolism during caloric restriction. The 0.5 mg/mL inclusion is below any clinical toxicity threshold and has no effect on semaglutide's GLP-1 receptor binding. Patients with documented B12 sensitivity or MTHFR methylation variants can ask their provider about the Semaglutide/Glycine variant, which uses glycine and B6 as the carrier instead.
- Where should I inject semaglutide?
- Semaglutide is injected subcutaneously into the abdomen, the upper outer thigh, or the back of the upper arm. Rotate sites between injections to avoid lipohypertrophy. Use a 31-gauge, 5/16-inch (8 mm) needle on a U-100 insulin syringe; sterile syringes are included with every Rx Peps Direct shipment. Pinch the skin lightly and inject at a 90-degree angle. For step-by-step technique, see the Rx Peps Direct injection guide.
- How long does semaglutide stay in the system?
- Semaglutide has a long half-life of approximately 165 hours (about 7 days). After your last dose, semaglutide remains pharmacologically active for roughly 3 to 5 weeks as the body clears it. This long half-life is why semaglutide is dosed once or twice weekly depending on the protocol step. If you discontinue semaglutide, expect appetite to begin returning to baseline around week 3 post-discontinuation.
- Does semaglutide cause hair loss?
- Hair shedding is reported in approximately 3 percent of semaglutide users in clinical trial data. The mechanism is most often telogen effluvium tied to rapid weight loss rather than a direct semaglutide effect, similar to what occurs after any aggressive caloric deficit. Most cases resolve within 3 to 6 months as weight stabilizes. Adequate protein intake (at least 1 gram per kilogram body weight per day) and complete-micronutrient coverage during weight loss reduce risk.
- Does compounded semaglutide expire?
- Yes. Every compounded semaglutide vial from a licensed U.S. 503A compounding pharmacy carries a Beyond Use Date (BUD) printed on the vial label by the pharmacy, which assigns that date from the preparation, container and storage rather than reading it off a USP <797> table. Unopened vials should be refrigerated at 36 to 46 degrees Fahrenheit and used by the printed BUD. 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 use any vial past the printed BUD and do not freeze.
- Can I switch between Ozempic and Rx Peps Direct-prescribed compounded semaglutide?
- Switching is a clinical decision your provider makes based on your current dose, titration step, and reason for switching. The active ingredient is identical, so the dose translates directly. Tell your Rx Peps Direct provider your current Ozempic dose in mg per week and they will match the dose on the compounded ladder dispensed by a licensed U.S. 503A compounding pharmacy. Do not stack Ozempic and compounded semaglutide; they are the same active ingredient and stacking causes overdose.
