organic lemons are best. if you cant afford organic you can use regular.
BUT
wash regular lemons in really hot water and lemon juice to remove chemicals on the outside. dont mix any pulp or rind into your lemonades from the non-organic lemons.
my gums changed color on this cleanse. they got pinker. healthier looking. its because i was getting the right amount of vitamins i think. it cured my anemic tendency. (anemia is low iron in your blood and can be seen in pale gums and ridged nails along with being tired all the time and pale in the face and bed of your nails)