Arc-1 Tirzepatide: Pricing by Dose and Provider Review

• Price (2.5 mg): $199.99/month (arc-1.co, verified 22 Oct 2026)
• Price (5 mg): $249.99/month
• Price (7.5 mg): $399.99/month
• Formula: Tirzepatide + Glycine + Vitamin B12
• Consultation: Free, included
• Shipping: Free expedited, included
• Guarantee: 30-day satisfaction guarantee
• Certification: LegitScript certified
• Form: Injectable only
• Not available in: CA, AR, IN, MN, SC

The all-inclusive pricing model is Arc-1's defining feature. The listed price is the total price. No consultation fee, no shipping surcharge, no hidden line items. That makes budgeting straightforward and head-to-head comparisons clean. BiltRx charges $129 per month for the medication but adds separate consultation and shipping fees that are not published. At the 2.5 mg starting dose, the gap between Arc-1's $199.99 and BiltRx's true all-in cost may be smaller than the $70.99 sticker difference suggests.

The 30-day satisfaction guarantee reduces risk for first-time buyers. If you are trying compounded tirzepatide for the first time and want a safety net, that policy has practical value. BiltRx does not advertise a comparable guarantee. For a direct comparison between the two providers, see our BiltRx vs Arc-1 page.

Arc-1's compounded injection contains three components. The active ingredient is tirzepatide, a dual GIP and GLP-1 receptor agonist identical to the molecule in Mounjaro and Zepbound. The compounded version is prepared by a 503A pharmacy rather than manufactured by Eli Lilly.

Glycine is an amino acid that plays roles in collagen synthesis, neurotransmitter function and protein stabilization. Some compounding pharmacies include glycine as a stabilizer to help maintain peptide integrity in solution. The amount present in each injection is small relative to the oral doses studied in metabolic research, where subjects typically take 3 to 5 grams per day. Any direct metabolic benefit from the glycine in this formulation is speculative.

Vitamin B12 (cyanocobalamin or methylcobalamin, depending on the pharmacy's formulation) supports red blood cell formation and neurological function. Many weight-loss clinics add B12 to injectable protocols as a general wellness supplement. B12 is water-soluble, so excess is excreted rather than stored. The inclusion is unlikely to cause harm, but calling it a clinical advantage would overstate the evidence.

Arc-1 publishes more formulation detail than most competitors. Knowing exactly what is in the vial before ordering is a transparency advantage. BiltRx, by contrast, does not disclose its inactive ingredients or concentration on public pages. For a deeper look at compounded versus brand-name formulations, see our compounded tirzepatide price comparison.

Store the vial in the refrigerator at 36 to 46 degrees Fahrenheit (2 to 8 degrees Celsius) upon arrival. Do not freeze. Keep the vial away from direct sunlight and heat sources. Arc-1 ships with cold-chain packaging designed to maintain temperature during transit.

Before each injection, let the vial sit at room temperature for a few minutes. Clean the vial stopper with an alcohol swab before drawing the dose. Rotate injection sites between the abdomen, thigh and upper arm to minimize injection-site reactions. Use a new needle and syringe for every injection and dispose of sharps in an FDA-cleared container.

If your shipment arrives with compromised packaging, a broken seal, or if the solution appears cloudy or contains visible particles, do not use it. Contact Arc-1's support team. Their 30-day satisfaction guarantee may cover replacement in these situations, though you should confirm the specific terms when you order.