The aisle that Lemon juice is found in Walmart is in the juice aisle with the other juice.
To find the lemon juice go down the aisle that contains other juices and beverages and you should see the lemon juice somewhere down that aisle.
If cannot find the lemon juice in Walmart or other stores you can ask an employee for assistance in helping you find it.
If you see other fruit juices such as apple juice or other juices like grape juice then, the lemon juice should be close by on that same aisle.
Lemon juice is good for you although is also a rich source of of citric acid, containing 1.44 and 1.38 g/oz, respectively.
Lemon and lime juice concentrates contain 1.10 and 1.06 g/oz, respectively.
The citric acid content of commercially available lemonade and other juice products varies widely, ranging from 0.03 to 0.22 g/oz.