I am interested in educated input on albuterol vs xopenex
albuterol seems to have gained a little popularity when compared to clen on some forums and i have read mixed inputs on the effectiveness of xopenex for use as a fat burner
but the real question i guess is xopenex going to have the same fat burning anabolic/anti-catabolic effect as albuterol
google search of “xopenex vs albuterol for fat burning” or for our education of the topic! does not really pull any definitive answers up for me
this is a clip of someone else’s post on bb.com on a similar topic
There is a clear and distinct difference in the pharmacology and pharmacokinetics of the (R) and the (S) isomers of methylphenylethylamine, and is clearly evident when administered to human subjects. This is true of most B-2 agonists like clenbuterol, albuterol, and ephedrine alkaloids. A majority of pharmacologist agree that the (S) isomer of most compounds like methylphenylethylamine are not B-2 agonists. In fact, studies on clenbuterol, albuterol, and ephedrine alkaloids have shown the (R) isomer completely blocks the bronchoconstrictive effects of histamine or metacholine. There are also studies on albuterol where 0.31 mg of the (R) isomer outperformed 1.25 mg of the racemic version.
In regard to adverse events, the low dose albuterol had no significant effect on heart rate while the higher dose racemic version increased heart rate. The conclusion drawn by my colleagues and pharmacologist is that clinical evidence suggests that when you give the racemic version of these compounds, the (S) isomer is competing with the (R) isomer in terms of B-2 agonist activity. Recently a brand of albuterol called Xopenex was released only using the (R) isomer that presented all this data shown before FDA approval was given.
If you look at the ephedrine alkaloid comparisons–L-ephedrine is many times stronger than DL-ephedrine and L-norephedrine is many times stronger than DL-norephedrine. However, pseudoephedrine is only marketed in the racemic version and higher doses are therefore needed than with L-ephedrine. The reason for the stereochemistry is simple – to cut down on side effects by being able to use lower dosages and for maximum B-2 agonist effects for weight loss. By only using the (R) version-or active isomer- you alleviate the “push-pull” fighting effect of the racemic version.