Dosing math
Calculate units to dial for any vial size, water volume, and desired microgram dose.
Reconstitution
Step-by-step guidance on mixing lyophilized peptides safely with bacteriostatic water.
Product help
Find the right injection pens, cartridges, syringes, and storage cases from our store.
Calculate My Dose
Manual entry dosing calculator for reconstituted peptide vials.
Manual Dosing Calculator
Enter your vial details to get units to dial
Units to dial
37.5
0.375 mL on a U-100 scale
- Concentration
- 6.67 mg/mL
- Per unit
- 66.7 mcg
- Doses per vial
- 8.0
- Max single dose
- 4.00 mg (0.6 mL)
Assumes a U-100 scale (100 units = 1 mL). Educational use only — not medical advice.
Chat with Peptide Pen Pal
Ask anything about dosing, reconstitution, peptides, or products.
Peptide Pen Pal
Your friendly peptide concierge
Hey, I’m your Peptide Pen Pal!
Ask me about dosing math, reconstitution, peptide info, or gear from the store.
Not medical advice — for educational purposes only.
Shop injection pens & accessories
Curated gear to make peptide research easier.
MetaTRIM V2 Reusable Metal Pen Kit – 3 Empty Cartridges and Pen Spacer Included
A durable, reusable metal pen with a weighted anodized-aluminum body and a smooth adjustment dial. Designed to fit standard 3 mL pen cartridges. What’s included 1 MetaTRIM V2 reusable metal pen 3 empty 3 mL glass cartridges in individually sealed packaging 1 3d printed pen spacer Product details Anodized-aluminum body with a matte finish 60-unit capacity Tactile click-style adjustment dial Magnified viewing window Compatible with standard 3 mL pen cartridges Available in Gold, Green, Blue, Purple, Red, White, Black, Gray, Sky Blue and Pink Care and storage Wipe the exterior with a soft cloth lightly dampened with 70% isopropyl alcohol. Do not immerse. Store in a cool, dry place and handle the internal mechanism with care. Important: The pen and included cartridges are empty. Needles and medication are not included. Inspect all sealed cartridge packaging before use. Ships from MetaTRIM Health in Madison, Mississippi. Free standard shipping is available on U.S. orders.
MetaTRIM Reusable 60-Unit Pen Kit with Case and 3 Empty Cartridges
A reusable 60-unit pen kit designed for convenient storage and transport. Available in Blue, Purple, Gray, and Green. What’s included 1 reusable 60-unit pen 1 hard-shell travel case 3 empty 3 mL glass cartridges in individually sealed packaging Product details Clear mechanical adjustment dial Reusable construction Case holds the pen, up to 3 compatible pen tips, and 1 spare cartridge Pen tips are not included Important: The pen and cartridges are empty. No medication is included. Inspect all sealed cartridge packaging before use. Ships from MetaTRIM Health in Madison, Mississippi. Free standard shipping is available on U.S. orders.
MetaTRIM Empty 3 mL Glass Pen Cartridges – 10 to 50 Pack
Empty standard-size glass cartridges for compatible reusable pen systems. Select a pack of 10, 20, 30, or 50. Product details 3 mL capacity Borosilicate glass Preinstalled rubber plungers Aluminum crimp tops with rubber septums Individually sealed packaging Available in 10-, 20-, 30-, and 50-count packs Compatibility Designed for pen systems that accept standard 3 mL cartridges. Confirm compatibility with your equipment before ordering. Important: Cartridges are supplied empty. No medication or other liquid is included. Inspect each seal and cartridge before use; do not use damaged packaging or glass. Orders are packed with protective cushioning and ship from MetaTRIM Health in Madison, Mississippi.
MetaTRIM Research Station – Pen and Cartridge Organizer Case
A purpose-built organizer that combines storage, transport, and a removable preparation dock in one compact case. Designed and 3D printed by MetaTRIM Health in Mississippi. Capacity and organization Holds up to 4 reusable pens Holds 2 standard 3 mL vials and 2 standard 3 mL cartridges Top compartment organizes up to 12 pen needles, alcohol prep pads, and small accessories Integrated dual-cartridge dock with a central purge post Magnetic locking lid insert What’s included 1 MetaTRIM Research Station case 1 magnetic lid insert matching the selected insert and latch color Materials and finish Made with durable 3D-printed filament. Layer lines and slight surface variations are normal characteristics of the manufacturing process. Color shades may vary slightly between production batches. Custom colors Contact us if you need a color not shown. Made-to-order colors may add 1–2 business days to processing. Important: Pens, cartridges, vials, needles, syringes, preparation supplies, and medication shown in photographs are for demonstration only and are not included.
MetaTRIM V2 Metal Pen 5-Pack with 5 Empty Cartridges
A value bundle containing five reusable MetaTRIM V2 metal pens and five empty standard 3 mL glass cartridges. What’s included 5 reusable V2 metal pens 5 empty 3 mL glass cartridges Color assortment Pen colors are selected from available inventory. The assortment may include Blue, Red, Pink, Gold, Green, Purple, White, or Black. Specific colors and a completely unique five-color assortment are not guaranteed. Product details Anodized-aluminum pen bodies 60-unit capacity Compatible with standard 3 mL pen cartridges Pen tips are not included Important: Pens and cartridges are empty. No medication is included. Ships from MetaTRIM Health in Madison, Mississippi. Free standard shipping is available on U.S. orders.
MetaTRIM Disposable 60-Unit Pen Bundle with Empty 3 mL Cartridges
MetaTRIM Disposable 60-Unit Pen Bundle A multi-pack of disposable 60-unit pen devices supplied with matching empty 3 mL glass cartridges. Available in 5-pack and 10-pack bundles. Bundle options 5-pack: 5 disposable pens and 5 empty 3 mL glass cartridges 10-pack: 10 disposable pens and 10 empty 3 mL glass cartridges Product details 60-unit adjustment scale Clear dose window Empty 3 mL glass cartridges with seal cap and rubber plunger Compatible pen tips are sold separately No medication or other injectable substance is included Confirm compatibility and follow all applicable instructions before use. Single-user product; do not share. Keep out of reach of children.
MetaTRIM Four-Cartridge Organizer with Purge Post
A compact organizer that keeps up to four standard 3 mL cartridges upright and protected. Designed and 3D printed by MetaTRIM Health in Mississippi. Features Four dedicated cartridge slots Central purge post Snap-lock cover Side cutouts for easier cartridge insertion and removal Compact design for storage or transport Specifications Compatibility: Standard 3 mL pen cartridges Capacity: Up to 4 cartridges Material: Durable 3D-printed PLA Available colors: Gold, Silk Rainbow, Purple, and White What’s included 1 four-cartridge organizer base with central purge post 1 snap-lock cover Layer lines and slight surface variations are normal characteristics of the 3D-printing process. Color shades may vary slightly between production batches. Important: Cartridges, pens, needles, preparation supplies, and medication shown in photographs are for demonstration only and are not included.
Bulk Supply V1 Reusable 60-Unit Pen Kit with Case 4 Pack
Reusable V1 60-unit pen kit designed for convenient storage and transport. Standard bundle comes with all available colors Blue, Purple, Grey, and Green. If you want 4 pack in one color then select that option. What’s included 4 reusable 60-unit pens 4 hard-shell travel cases Product details Clear mechanical adjustment dial Reusable construction Case holds the pen, up to 3 compatible pen tips, and 1 spare cartridge Pen tips are not included Important: No medication is included. Inspect all sealed cartridge packaging before use. Ships from MetaTRIM Health in Madison, Mississippi. $5.99 standard shipping is available on U.S. orders.
Bulk Supply Disposable 60-Unit Pen Bundle 25 pack and 50 pack
Bulk Supply Disposable 60-Unit Pen Bundle A multi-pack of disposable 60-unit pen devices supplied. Available in 25-pack and 50-pack bundles. Bundle options 25-pack: 5 disposable pens packaged individually 50-pack: 50 disposable pens packaged individually Product details 60-unit adjustment scale Clear dose window Compatible pen tips and vials are sold separately No medication or other injectable substance is included Confirm compatibility and follow all applicable instructions before use. Single-user product; do not share. Keep out of reach of children.
Bulk Supply Empty 3 mL Glass Pen Cartridges – 100 to 500 Pack
Empty standard-size glass cartridges for compatible reusable pen systems. Select a pack of 10, 20, 30, or 50. Product details 3 mL capacity Borosilicate glass Preinstalled rubber plungers Aluminum crimp tops with rubber septums Individually sealed sterile packaging Available in 100-, 200-, 300-, and 500-count packs Compatibility Designed for pen systems that accept standard 3 mL cartridges. Confirm compatibility with your equipment before ordering. Important: Cartridges are supplied empty. No medication or other liquid is included. Inspect each seal and cartridge before use; do not use damaged packaging or glass. Orders are packed with protective cushioning and ship from MetaTRIM Health in Madison, Mississippi. $5.99 standard shipping on US orders.
MetaTRIM V2 Metal Pen 10-Pack with 10 Empty Cartridges
MetaTrim 5 Pen + 5 Vial Bundle /* Styling for eBay Listing Container */ .metatrim-container { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; max-width: 900px; margin: 0 auto; color: #333333; background-color: #f8f9fa; border: 1px solid #e0e0e0; border-radius: 12px; overflow: hidden; box-shadow: 0 4px 15px rgba(0,0,0,0.05); } /* Header Styling */ .metatrim-header { background: linear-gradient(135deg, #0d3b66 0%, #0077b6 100%); color: #ffffff; padding: 30px 20px; text-align: center; } .metatrim-brand { font-size: 32px; font-weight: 800; letter-spacing: 2px; text-transform: uppercase; margin: 0; color: #00b4d8; } .metatrim-title { font-size: 24px; margin: 10px 0 0 0; font-weight: 600; } .metatrim-price-tag { display: inline-block; background-color: #e63946; color: #ffffff; font-size: 22px; font-weight: bold; padding: 6px 18px; border-radius: 20px; margin-top: 15px; } /* Highlights / Graphic Cards Bar */ .metatrim-features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 15px; padding: 25px 20px; background-color: #ffffff; } .metatrim-card { background: #f1f5f9; border-left: 5px solid #0077b6; border-radius: 8px; padding: 15px; text-align: center; } .metatrim-card-icon { font-size: 28px; margin-bottom: 8px; } .metatrim-card-title { font-weight: 700; color: #0d3b66; font-size: 15px; text-transform: uppercase; margin-bottom: 4px; } .metatrim-card-desc { font-size: 13px; color: #64748b; margin: 0; } /* Main Section Content */ .metatrim-content { padding: 20px 30px 30px 30px; } .metatrim-section-header { font-size: 18px; color: #0d3b66; border-bottom: 2px solid #0077b6; padding-bottom: 6px; margin-top: 20px; margin-bottom: 15px; font-weight: 700; text-transform: uppercase; } .metatrim-list { list-style-type: none; padding: 0; margin: 0; } .metatrim-list li { position: relative; padding-left: 28px; margin-bottom: 12px; font-size: 15px; line-height: 1.5; } .metatrim-list li::before { content: "✓"; position: absolute; left: 0; top: 0; color: #0077b6; font-weight: bold; font-size: 16px; } /* Callout Box for Colors */ .metatrim-notice-box { background-color: #eff6ff; border: 1px dashed #3b82f6; border-radius: 8px; padding: 15px; margin-top: 20px; display: flex; align-items: center; gap: 12px; } .metatrim-notice-icon { font-size: 24px; } .metatrim-notice-text { font-size: 14px; color: #1e3a8a; margin: 0; } /* Footer */ .metatrim-footer { background-color: #0d3b66; color: #ffffff; text-align: center; padding: 15px; font-size: 13px; } MetaTRIM™ 10x Injection Pens + 10x 3mL Glass Vials Combo Kit $149.99 & Free Shipping 🇺🇸 USA Seller Ships directly from domestic stock ⚡ Fast & Free Quick processing & fast delivery 🎨 Random Mix Assorted sleek metallic pen colors 🔒 Secure Packaging Safely packed for secure arrival Package Includes 10x Reusable Injection Pens (Durable metallic finish) 10x 3mL Glass Cartridges / Vials (Designed for standard fitment) Product Description Get a complete setup with the official MetaTrim 10-Pen and 10-Vial Value Bundle. Each kit contains five precision injection pens paired with five matching 3mL empty glass cartridges/vials, offering a convenient, high-quality solution for your dispensing needs. 🎨 Color Assortment Info: Pen colors are selected at random depending on current inventory levels at the time of purchase (available options include red, gold, green, blue, purple, silver, black, etc.). Specific color preferences cannot be guaranteed. Only in extremely low inventory situations you may receive duplicate colors. Shipping & Guarantee Handling Time: Ships within 1 business day. Shipping Cost: 100% Free standard shipping nationwide. Support: Have questions? Contact us anytime via eBay messages for quick assistance. Thank you for shopping with MetaTrim Store!
MetaTRIM Injection Pen Travel Case Holds up to 6 Pens Peptide Reconstitution Station
Streamline your daily research routine with the ultimate all-in-one organizer. The MetaTRIM Modular Peptide & Injection Pen Case is engineered specifically to protect, organize, and transport your injection pens, vials, and administration supplies in one sleek hardshell travel unit. Key Features: Integrated Reconstitution Station: Includes dedicated wells for (3) 3ml peptide vials, (1) 10ml BAC water vial, a 3ml pen vial dock, and a built-in central 3ml Air Purge Tower for seamless air bubble purging. Dual-Layer Capacity (Up to 6 Pens): Features a removable top tray holding 3 active injection pens, which lifts out to reveal a deep lower compartment holding 3 additional pens or extra supplies. Dedicated Supply Storage: Tailored slots for alcohol prep wipes and a large supply tray for safety pen needles, extra caps, and syringes. Secure Travel Case: Durable hardshell outer case equipped with dual locking latches. Printed in eye-catching Silk Rainbow filament (also available in custom color options). What's Included: (1) MetaTRIM Hardshell Travel Case. (1) Modular Insert with Reconstitution Station & Supply Wells. (1) Removable 3-Pen Gradient Top Tray. Disclaimer: Organizer case and 3D-printed inserts only. Injection pens, syringes, vials, alcohol wipes, and pen needles shown in promotional media are for capacity demonstration only and are not included. No 3D-printed product is perfect. Each case may have minor imperfections.