Slazbolak is LDI’s injectable anabolic steroid, built entirely around Nandrolone Phenylpropionate.
What Is Actually In It
Slazbolak has a single active ingredient: Nandrolone Phenylpropionate at 25 mg per milliliter. Nandrolone is a synthetic anabolic-androgenic steroid; there are no vitamins, minerals, or other actives in this formulation. That figure is transcribed exactly as LDI states it, with no conversion or rounding.
What the Label Says It Is For
LDI’s label states Slazbolak develops pectoral muscle without a corresponding weight increase and accelerates bone maturation, and separately lists it as indicated in cases of physiological and mechanical stress. That is the manufacturer’s own claim, reproduced above in the fact table.
Forms It Comes In
Slazbolak is sold as an injectable liquid, given intramuscularly. LDI’s dosage of 0.25 to 0.5 mL every two weeks is quoted verbatim in the box above; this body text does not repeat, convert, or adjust that figure.
Withdrawal Period
LDI does not publish a withdrawal period for Slazbolak. Absence of a published figure is not the same as a zero-day withdrawal, and it is not treated as one here, and it matters more than usual for a steroid injectable, where a wrong assumption about clearance time is not a minor error.
What This Page Does Not Tell You
This page transcribes what LDI publishes about Slazbolak. It does not tell a reader whether an anabolic steroid injection is appropriate, legal, or advisable for a given bird or competition, and it does not address any sporting or regulatory rules around steroid use. Take that question, and any question about injection technique, to a veterinarian, an agrivet, or the local agriculture office.
Frequently Asked Questions
What is in Slazbolak?
Nandrolone Phenylpropionate, an anabolic-androgenic steroid, at 25 mg per milliliter. It is the only active ingredient LDI lists.
What form does Slazbolak come in?
An injectable liquid, given intramuscularly.
How long is the withdrawal period for Slazbolak?
LDI does not publish one.