A Okay. I am not a medical professional. I use these from time to time when I have been working outside in the hot Florida summer (90-100 deg and high humidity). I find that they help me replenish some of my electrolytes and overcome dehydration that comes from sweating so much in such high heat. And yes, they do help the cramps when I really really get dehydrated.Now. Please understand this. These tablets contain things that could potentially harm you depending on your physical health and medical conditions. Too much Potassium or Sodium can be bad for you if you have certain medical conditions. Too little can do the same. I take these, occasionally, because I regularly see my physician and have blood tests (including a complete CMP) three times a year. I know my medical conditions. I know what I should and should not do. I know what I can do on occasion to correct things like dehydration. AND, I know how the contents of these pills might affect the other medications that I take.SO . . . .First advice to you is this. See a physician first and have a complete physical along with blood tests. Then, advise the physician of the activities you are going to be involved in, your concerns, and seek his/her advice. Your physician will likely give you the best advice.Second advice, companies that market products like this are not out to hurt you. But they are also not aware of your medical history or your personal physician’s recommendations. They simply want to sell you a product. Is their product good or bad? Hopefully good. Do you really need it? Let your doctor advise you. After all, you probably pay your doctor far more $$$ for advice and care then you will spend on any supplements. Is the product great? Yes, for some people. Is the product right for you . . . .? Let your doctor decide that.Hope this helps.Stay Healthy, Live Long, Give Love and Compassion to all....Bruce