Ultima-Bold 250mg is the brand name of an illegal injectable anabolic-androgenic steroid (AAS), containing 250mg per ml of the active substance boldenone undecylenate. It is most commonly sold on the black market for performance enhancement and bodybuilding.
Risks and legal status
Because Ultima-Bold 250mg is a black-market product, it carries significant health and legal risks:
- Illegal for human use: The active ingredient, boldenone undecylenate, is approved only for veterinary use, typically to treat debilitated horses. Its use in humans is illegal in many countries, including the United States, where it is a Schedule III controlled substance.
- Unregulated quality: As an illicit product, the quality, dosage, and purity of Ultima-Bold 250mg are not regulated or guaranteed. This lack of quality control can result in contaminated or incorrectly dosed products.
- Banned in sports: Boldenone undecylenate is banned by the World Anti-Doping Agency (WADA) at all times for all athletes. It can be detected in drug tests for many months after use.
Effects and side effects
Boldenone undecylenate is an altered form of testosterone that has strong anabolic (muscle-building) effects and moderate androgenic effects.
- Primary effects for bodybuilders: Users seek to gain lean muscle mass, increase strength, enhance endurance, and boost appetite. It is known for producing slow and steady gains with minimal water retention.
- Potential side effects: Use carries serious health risks, including:
- Cardiovascular issues, such as high blood pressure, increased cholesterol, stroke, and heart attack.
- Hormonal imbalances, including suppression of natural testosterone production, which can lead to infertility, reduced libido, and shrunken testicles in men.
- Androgenic effects, such as severe acne, oily skin, increased body hair growth, and male-pattern baldness.
- In women, it can cause masculinizing effects, including a deepened voice, excessive hair growth, and an enlarged clitoris.
- Possible liver damage and psychiatric effects like aggression and mood swings.





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