What is Pyro?
Pyro is a focused two-compound injectable fat burner delivering Albuterol (2 mg) and Yohimbine (5 mg) per ml. It functions similarly to Helios but with albuterol substituted for clenbuterol as the adrenergic agent, which is the key practical distinction. Clenbuterol carries a 24 to 48 hour half-life that keeps the body in a stimulated state all day and disrupts sleep, while albuterol clears the system in a matter of hours, concentrating the fat-burning and stimulant window around the activity it is used for. Yohimbine complements albuterol by blocking alpha-2 adrenergic receptors that would otherwise inhibit fat mobilization in stubborn areas, particularly subcutaneous belly fat. Pinned subcutaneously before fasted cardio, Pyro creates a targeted lipolytic environment in the window where fat loss is most accessible.
Mechanisms of Action
Albuterol (2 mg) as a beta-2 adrenergic agonist stimulating beta-2 receptors in adipose and smooth muscle tissue to drive thermogenesis, increase metabolic rate, and promote lipolysis with a significantly shorter half-life than clenbuterol, limiting stimulant effects to the active window
Yohimbine (5 mg) as an alpha-2 adrenergic antagonist blocking the receptors that normally suppress fat mobilization in stubborn fat depots, particularly in areas like the abdomen where alpha-2 receptor density is high and fat release is normally blunted
Synergistic adrenergic dual-pathway action with albuterol pushing beta-2 mediated lipolysis while yohimbine simultaneously removes the alpha-2 brake on fat release, allowing both pathways to drive fat oxidation at the same time
Subcutaneous delivery for local lipolytic effect with SubQ administration into belly fat allowing the compounds to act in close proximity to the target tissue before entering general circulation
Benefits
Accelerated fat loss through combined beta-2 agonism and alpha-2 antagonism targeting fat mobilization from complementary receptor pathways simultaneously
Shorter duration of action than clenbuterol-based products keeping the stimulant and cardiovascular effects contained to the fasted cardio window rather than persisting all day and into sleep
Improved energy and focus from the sympathomimetic activity of both compounds, supporting sharper mental engagement and physical drive during cardio without the prolonged overstimulation of longer-acting compounds
Improved endurance via albuterol's beta-2 activity in airway smooth muscle improving breathing efficiency and oxygen delivery during cardiovascular exercise
Targeted stubborn fat mobilization with yohimbine specifically addressing the alpha-2 receptor-dense fat depots that are typically the last to respond to standard fat loss approaches
Dosing
Level | Dose | Timing |
|---|---|---|
Starting / Sweet Spot | 0.10 ml | 20 minutes before fasted cardio |
Intermediate | 0.25 ml | 20 minutes before fasted cardio |
Advanced | 0.35 ml | 20 minutes before fasted cardio |
Maximum | 1 ml | 20 minutes before fasted cardio |
Administer subcutaneously into belly fat approximately 20 minutes before fasted cardio. Start at 0.10 ml and assess tolerance before increasing. This compound is extremely potent and the vast majority of users do not need more than 0.35 ml to get a strong effect. Pairing with L-theanine helps smooth out anxiety and jitteriness. Not recommended as a pre-workout for heavy lifting as the cardiovascular load combined with intense training can be excessive.
Warning: Start very low. This compound does not require a high dose to be effective and jumping to higher volumes is a common mistake. Keep it to fasted cardio only rather than heavy lifting. L-theanine is a smart addition to take the edge off the adrenergic stimulation. A full ml is extremely powerful and should only be approached after extensive experience at lower doses.
Safety Profile
Elevated heart rate and blood pressure driven by the combined beta-2 and alpha-2 adrenergic activity, particularly pronounced at higher doses or when combined with intense physical exertion
Anxiety and jitteriness common especially at higher doses; pairing with L-theanine significantly reduces this without blunting the fat loss effect
Insomnia less of a concern than with clenbuterol-based products given albuterol's shorter half-life, but still possible if dosed too late in the morning
Sweating and shaking particularly at higher doses, consistent with the sympathomimetic stimulation profile of both compounds
Citations
Martineau, L., et al. Albuterol and beta-2 adrenergic stimulation in metabolic research. PubMed. https://pubmed.ncbi.nlm.nih.gov/6136715/
Mizuki, Y., et al. Yohimbine and alpha-2 adrenergic receptor antagonism in fat tissue. PubMed. https://pubmed.ncbi.nlm.nih.gov/28819516/
Disclaimer: The information provided is intended solely for educational purposes and should not be considered a replacement for professional medical advice. All compounds referenced are not for human consumption.
