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So good to find a NZ gym obsession site! Think this is going to be great to get some new ideas. I dont do bodybuilding but like to think I train pretty hard. Have withdrawal if I cant make it there on one of my training days. Have a really good training partner who pushes me pretty hard. I would be interested to know if anyone out there is using H Blocker and how they find it. I found it gave me daily headaches, and acne!!! Im a girl, maybe its meant more for boys?? Did really notice quick recovery time between sets though.

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Welcome Andi. First of all - if you're getting a headache, check your water intake. As for the acne, the zinc, magnesium and vitamin B6 should all help to improve acne, not cause it! Could there be another factor?

Like the others, I've never tried (or even heard of) H+blocker. However, from Wynton's link, here's my take on it. If anyone knows better, please feel free to correct me! :)

H+blocker is a product which is designed to raise carnosine levels, which the manufacturers say could encourage development of desirable muscle fibers. They back this up by saying that "recent studies have indicated that carnosine is preferentially found in fast-twitch (Type II) muscle fibers". That's true, according to PebMed:

The carnosine content of vastus lateralis is elevated in resistance-trained bodybuilders.

Now, H+blocker doesn't actually contain carnosine - it supplies you with the ingredients (so to speak) for your body to make its own carnosine - Beta-alanine and L-Histidine. But that's ok, because studies show "dietary supplementation with ... beta-alanine for 4 weeks resulted in significant increases in muscle carnosine".

The absorption of orally supplied beta-alanine and its effect on muscle carnosine synthesis in human vastus lateralis.

Therefore, by increasing your carnosine levels, the manufacturers suggest you can increase the performance of these desirable fast-twitch fibers. And that's where it all gets a bit dubious.

Physiological role of carnosine in contracting muscle.

To date, only 1 study has investigated the effects of carnosine supplementation (not in pure form) on exercise performance in human subjects and found no improvement in repetitive high-intensity work. Much data has come from in vitro work on animal skeletal muscle fibers or other components of muscle contractile mechanisms. Thus further research needs to be carried out on humans to provide additional understanding on the effects of carnosine in vivo.

Hope that helps. :)

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Thanx for replies. Yes is quite different from creatine. Am usually very sceptical about new products, but with H Blocker really did notice effects straight away. Apparently its pretty potent stuff!! They have lots of the rugby and league guys using it.

Take it about half hr b4 wrkout, feel it kick in straight away, you go all tingly like pins and needles in your hands, face or feet. Dont think you push heavier weights, but youll do a set then be raring to go again straight away. that was good.

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