Bold 300 by Xeno Labs is a 10 ml vial of boldenone undecylenate at 300 mg per ml. You're comparing labs and concentrations, and this one carries 3000 mg total in oil-based injectable form. The vial arrives sealed, labelled with dosage and milliliter size, and the maker publishes an authentication check for its boxes so you can verify what you received. Xeno Labs, based in the USA and making these since 2018, is one option among several when you're weighing boldenone undecylenate sources.

What the vial holds

Each milliliter holds 300 mg of boldenone undecylenate. That concentration puts 3000 mg in the full 10 ml vial. It's oil-based and prepared for intramuscular injection. The pack is a single vial, and the label prints the substance, strength, and volume so you can check them before opening.

Comparing this strength to other boldenone options

The 300 mg per ml concentration is higher than standard equipoise formulations, which typically carry 200 to 250 mg per ml. If you're comparing this to equipoise 200 or other lower-concentration vials, the difference is volume required per dose. Fewer milliliters are needed from a 300 mg vial to reach the same total amount, though injection site tolerance and oil viscosity become considerations at higher concentrations.

Boldenone undecylenate as an injectable

Boldenone undecylenate is available only as an injection. No pill, capsule, or oral form of this ester exists, so any equipoise steroid bottle you compare will be oil-based and delivered intramuscularly. The ester chain makes it oil-soluble and extends its release, which is why it's formulated this way rather than as a tablet. If you're looking at other equipoise steroids, boldenone undecylenate differs in its ester length and formulation requirements from shorter-ester compounds.

Key specifications

• Boldenone undecylenate at 300 mg per ml
• 10 ml vial, 3000 mg total
• Oil-based injection for intramuscular use
• Made by Xeno Labs, USA-based, producing since 2018
• Box authentication available from the maker