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Clenbuterol, also known as Spiropent, is a beta-receptor agonist drug utilized in asthma treatment and in bodybuilding to aid in fat loss. It may also be employed to enhance endurance exercise performance.

Usage of Clenbuterol:

Clenbuterol is best reserved for situations where rapid fat loss is desired over a relatively short timeframe. If the goal is to lose only 1 lb of fat per week, alternative methods are more appropriate. However, when fat loss efforts have plateaued or nearly plateaued, Clenbuterol can potentially accelerate the rate of loss by approximately 1 lb per week.

Dosage and Cycling of Clenbuterol:

Effective dosing typically ranges from a minimum of 20 mcg/day to more common values of 40-140 mcg/day. Starting at 40 mcg/day is advisable, with adjustments made based on individual response, increasing dose by 20 mcg increments as needed. While some users titrate dosage until experiencing hand tremors, significant fat loss can still be achieved at lower doses.

Clenbuterol should be cycled rather than used continuously or for prolonged periods, with typical cycles lasting from 2 to 8 weeks.

Packaging: 90 capsules in a sealed bottle.




40 mcg




Dosage & administration:

Half life

36 hours


10-40mg per day

Average Cycle Length

40 – 180mcg per day or as required – it’s typical to cycle clenbuterol on a 5 day on 2 day off and repeat

Anabolic #


Androgenic #


Oral Bioavailability

Estimated at 90%

CAS Name



Clenbuterol, Clen, Spiropent

Clen 80MCG

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