Now available in 90ct tablets only - As athletes metabolize fuel (food), acidic wastes are created and hydrogen ions build up in muscles. When competitive athletes exceed their natural ability to flush out or neutralize acidic wastes, low grade acidosis occurs. pHast Legs neutralizes these acids in the blood and helps an athlete maintain a healthy pH balance, reducing Delayed Onset Muscle Soreness (DOMS) and recovery time.

A key ingredient in pHast Legs is Alka-Myte®, a patented blend of minerals packaged and shrunk to sizes so small that they easily pass from the stomach into the blood stream quickly and effectively. The composition has been tested and verified to improve endurance, strength, and muscle recovery in world-class athletes. In a recent double blind-placebo clinical trial conducted with 24 nordic skiers, products with Alka-Myte showed the following results:
Increased upper body power output by 4 or 6% for best 60 or 10 second tests
Reduced cardio respiratory stress with lower heart rate (-3.8%), respiratory rate and energy expenditure (e.g. reduced sub-maximal VO2 use by 5%)
Reduced blood lactate levels by 9.6%
- Reduce the intensity of the burn.
- Allow muscles to generate more anaerobic power when called for.
- Reduce damage to cells and accelerate healing muscles thus decreasing recovery time and DOMS.
- Allow longer use of fat, lactate, and glycogen as fuel to give sustained aerobic performance.
- Maintain the blood at the homeostasis pH level for longer times.
- Eliminate the blood from activating its emergency buffers.
- Keep the individual red blood cells flowing and exchanging oxygen.
- Keep the transport of waste and fuel moving in and out of working muscle cells.
- Reduce cardio-respiratory stress while operating at higher power outputs.
The way pHast Legs works is pretty simple. pHast Legs uses Alka-Myte®, a special blend of calcium carbonate as its active ingredient. Calcium carbonate is a common substance found in...rocks! It’s also a great alkalizing agent.
Calcium carbonate neutralizes (alkalizes) the lactic acid that builds up in your muscles during intense workouts in much the same way as baking soda takes the tang out of lemon juice.
We blend calcium carbonate with other ingredients to create the perfect alkalizing buffer which raises the pH of your blood level. When your pH blood level is optimized, you perform perform better and recover quicker. Proper pH levels greatly reduce muscle soreness after hard efforts.
pHast Legs is a systemic product which means you have to use it for 4 weeks before you’ll feel the full effects. But don’t worry. By testing your urine each week you’ll see the effects of pHast Legs within 24 hours. You’ll also start to feel better within 3-4 weeks depending on exercise load, sleep patterns, stress and diet.
Users describe the feeling as “having more energy”, “able to produce more effort when needed”, “ less fatigue after a long day” and “faster recovery”.
The World Anti-Doping Agency (“WADA”) has tested the Alka Myte composition for human athletic performance and has certified that Alka Myte is in compliance with all anti-doping regulations and containing no steroids, stimulants, or any prohibited substances.
About pH Sciences
pH Sciences holds intellectual property and patents to manufacture a wide range of proprietary mineral-based, crystalline compositions that can safely control the complex acid/alkaline balance in human and other biological systems.
RockTape is an international company headquartered in Los Gatos, California. With offices in Australia, United Kingdom and Mexico, RockTape serves the needs of over 6,000 medical professionals. RockTape, PowerTaping, pHast Legs and RockSauce are used by leading competitive athletes to enhance sports performance and by medical professionals to treat common sports injuries.
Available in long-lasting tablets, pHast Legs is specifically designed to help competitive athletes. pHast Legs uses a proprietary blend of natural ingredients called Alka-Myte® to create its alkalizing formula. Alka Myte allows pHast Legs to quickly pass from the intestinal wall into your blood stream without causing any stomach discomfort.
Acidosis has been linked to a wide variety of issues ranging from sleep disorders to weight gain. Users who experience the most dramatic results and benefits are those who test themselves at their anaerobic threshold. pHast Legs helps competitive athletes sustain healthy pH levels and prevents hydrogen ion buildup by neutralizing acidic wastes. As a result, many athletes and coaches are also discovering that pHast Legs is helping them push beyond their previous limits and achieve performance breakthroughs and new personal bests. Competitive athletes need to be particularly concerned with maintaining healthy pH levels because they regularly place themselves under physical and dietary stresses that can lead to performance-compromising pH imbalances—most commonly acidosis.
What’s your blood pH?
If you’re using our product, chances are you’re an athlete and want to enhance your performance. Great! Let’s first start by examining your diet. The table below shows some foods that are acidic and alkaline.
Acidic |
Alkaline |
Sports drinks, artificial sweeteners |
Honey, sugar |
Blueberries, cranberries |
Oranges, bananas, pineapple |
Chocolate |
Carrots, corn, tofu, spinach |
Peanuts, walnuts |
Almonds |
Wheat, pastries, pasta |
Olive oil |
Beef, pork, shellfish |
|
Beer, wine, soft drinks |
Green tea, herbal tea |
If you’re like most people, you eat way to the left of where you should be. Why? Because like most humans, you love coffee, beer, chocolate and pasta! You do try to eat more green, leafy stuff and the right kind of fruit, but at the end of the day, your blood is far too acidic for optimum performance. Remember, acids and alkalines are both good, they just need to be balanced. pHast Legs is a great tool to help you get and stay balanced.
Pee test time!
In your kit are pH test strips. Before you start pHast Legs, use these first thing in the morning to test your urine’s pH level. By testing your urine, you’ll establish a baseline so that you’ll be able to see the effect of pHast Legs within a few days!
If your urinary pH fluctuates between 6.2 to 7.2 in the morning, you’re good. Test your pH 2-3 times per week. Use the pH strips to actually see the changes pHast Legs is making to your body. Best not to bring used pH strips to your friends' house to show around...

Dosage
We recommend one tab for each 50 lbs of weight. This dosage should be consumed preferably with food and/or water.
Weight |
Quantity |
Frequency |
100lbs. |
2 tabs |
1 tab in AM, 1 in PM |
150 lbs. |
3 tabs |
1 tab in AM, 2 in PM |
200 lbs. |
4 tabs |
2 tabs in AM, 2 in PM |
250 lbs. |
5 tabs |
2 tabs in AM, 3 in PM |
Race in Seven
If you’re not taking pHast Legs daily, no worries! Simply start taking pHast Legs 7 days prior to your race, adding 2 tabs to the recommend daily dosage, and you’ll be optimized by race day. Pop 1 tab about 30 minutes before the race for an extra boost.
If you’re already taking pHast Legs daily, great! Simply add 1-2 tabs to your daily consumption 7 days prior to your event. This added boost will help you perform and recover faster. Drop back to normal dosage 1 day after your event.
What’s the Science?
The way pHast Legs works is pretty simple. pHast Legs uses Alka-Myte®, a special blend of calcium carbonate as its active ingredient. Calcium carbonate is a common substance found in...rocks! It’s also a great alkalizing agent.
Calcium carbonate neutralizes (alkalizes) the lactic acid that builds up in your muscles during intense workouts in much the same way as baking soda takes the tang out of lemon juice. We blend calcium carbonate with other ingredients to create the perfect alkalizing buffer which raises the pH of your blood level. When your pH blood level is optimized, you perform perform better and recover quicker. Proper pH levels greatly reduce muscle soreness after hard efforts.
pHast Legs is a systemic product which means you have to use it for 4 weeks before you’ll feel the full effects. But don’t worry. By testing your urine each week you’ll see the effects of pHast Legs within 24 hours. You’ll also start to feel better within 3-4 weeks depending on exercise load, sleep patterns, stress and diet. Users describe the feeling as “having more energy,” “able to produce more effort when needed,” “ less fatigue after a long day,” and “faster recovery.” We describe it as "butt-kicking"!