Peptides are short chains of amino acids that act as signaling molecules in your body. They occur naturally and regulate processes like growth hormone release, tissue repair, immune function, and metabolism. Therapeutic peptides are bioidentical or analog versions of these natural molecules.

The peptides we carry have been studied in clinical research and are manufactured in cGMP-compliant, USA-based facilities. Every batch is third-party tested for purity (>99%). However, peptides are powerful compounds — they should always be used under the guidance of a licensed healthcare provider.

Our peptides are clinically guided. After placing an order, you'll complete a brief medical intake form that is reviewed by a licensed provider. If approved, your order ships directly to you. This process ensures safe, appropriate use.

Start with your health goal — fat loss, recovery, immune support, longevity, or cognitive enhancement. Our product categories are organized by goal to help you find the right fit. For personalized guidance, consult with your healthcare provider.

It's simple: (1) Browse and select your peptides, (2) Complete the medical intake for clinician approval, (3) Once approved, your order ships with fast, discreet delivery.

Orders typically ship within 1–2 business days of clinician approval. Standard delivery is 3–5 business days. All shipments are discreet and temperature-controlled when necessary.

Currently, we ship within the United States only. International shipping regulations for peptides vary by country and we are working to expand availability.

Peptides arrive as a freeze-dried powder in a sealed vial. Reconstitution is the process of adding bacteriostatic water (BAC water) to dissolve the powder into an injectable solution. Our calculator tool makes this simple.

It depends on your vial size and desired concentration. A common approach is 2 mL of BAC water per 5 mg vial, but use our Reconstitution Calculator for precise measurements based on your specific peptide and dose.

Most peptides are injected subcutaneously (SubQ) using a U-100 insulin syringe. Clean the injection site with an alcohol swab, pinch the skin at the abdomen or thigh, insert the needle at a 45° angle, and inject slowly. Rotate injection sites to avoid irritation.

We recommend U-100 insulin syringes (typically 0.5 mL or 1 mL with 29–31 gauge needles). These are widely available at pharmacies. The fine gauge minimizes discomfort.

Timing varies by peptide. Growth hormone secretagogues (Tesamorelin, Ipamorelin, CJC-1295) are best taken on an empty stomach, often before bed or first thing in the morning. Recovery peptides (BPC-157, TB-500) can be taken any time. Check our Cheat Sheet for peptide-specific guidance.

Unreconstituted (dry powder): Store in a cool, dark place. Refrigeration extends shelf life. Reconstituted (mixed with BAC water): Must be refrigerated at 36–46°F (2–8°C). Never freeze reconstituted peptides. Most reconstituted peptides remain stable for 28 days.

Typically 28 days when properly refrigerated. Some peptides may have shorter or longer stability windows — check the product page for specifics. Always discard if the solution becomes cloudy or discolored.

All LYV Rx peptides are manufactured in FDA-registered, cGMP-compliant facilities in the United States. Every batch undergoes third-party testing for identity, purity, and potency.

Independent laboratories (not affiliated with the manufacturer) verify each batch using techniques like HPLC and mass spectrometry. This ensures the peptide is what it claims to be, at the stated purity (>99%), free from contaminants.

Yes. COAs are available for all our products. Contact our support team or check the product page for downloadable certificates.

Side effects are generally mild and may include injection site redness, mild nausea, or water retention. These typically resolve within the first few days. Serious side effects are rare when peptides are used at recommended doses under clinical guidance. Always report unusual symptoms to your healthcare provider.