CARBOLIN 19 Anabolic/Lipolytic Agent

Forskolin is one of the most researched natural ingredients showing the most significant benefits for burning fat and building muscle. The Carbolin 19® formula contains Biotest-invented forskolin carbonate with enhanced absorption and action duration. You absorb more, and it lasts longer, providing even greater fat-burning/muscle-building effects.*


  • Increases TSH, which leads to an increase in metabolic rate*
  • Increases HSL, which leads to triglycerides being released and burned as fat*
  • Increases cyclase activity, which causes fat to be burned*
  • Increases cAMP, which causes the Leydig cells to produce testosterone in men*
  • Increases nitrogen retention, which causes an increase in muscle mass*



Forskolin increases intracellular cyclic AMP, which stimulates the secretion of thyroid hormone and testosterone (in men). In addition to increasing the thyroid’s secretion of T3 and boosting testosterone, forskolin increases fat burning, breaks down triglycerides, stimulates protein synthesis in skeletal muscle, and activates thermogenic brown adipose tissue (BAT).*

NOTE: T NATION-BIOTEST-invented forskolin carbonate is pure forskolin with enhanced absorption and 12-hour extended active life.* Carbolin 19® and Alpha Male® supplements contain forskolin carbonate. The Hot-Rox® formula contains forskolin extract combined with piperine to improve its bioavailability.* LEARN MORE

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

I don’t understand how to choose between this and Indigo-3G. Both sound useful for weight loss. What should make someone choose one over the other?

Does it matter when, during the day, you take this?

If your primary goal is fat loss, I would first try Carbolin 19.

I like to think of Carbolin 19 as a fat loss agent with the additional benefits of muscle retention/gain and increased testosterone (in men).

With Indigo-3G, I think of it first as a product that helps you utilize carbohydrates better (for better training and faster progress) with an additional benefit of fat loss.

Both are great for body recomposition, but I think one might see faster results with Carbolin 19.

I think with how Biotest has formulated Carbolin 19 to allow for better absorption and longer lasting effects, it doesn’t really matter. Carbolin 19 is active for many hours after a dose.

I would just try to take it around the same time each day.

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