Years ago, sodium hypochlorite was used to chlorinate pools. It is basic, pH greater than 7. And I think ordinary hydrochloric acid was used to drop the pH back to 7. I don't know if these are still used. Sodium Hypochlorite ([math]NaClO[/math]) was used to chlorinate pools. If you want to lower the pH, try adding HCl.
Because most episodes of back pain have inflammation as a contributing factor, anti-inflammatory medication such as non-steroidal anti-inflammatory drugs (NSAIDs) is often an effective pain medication treatment option.
NSAIDs are also used to treat non-inflammatory conditions such as migraine, period pain and postoperative pain, and to reduce fever. Aspirin, in low doses, is an NSAID with blood-thinning properties used to reduce the risk of heart attack and stroke in high-risk patients.