Some recently told me that citric acid is really bad for you in spices and in food and vitamins and I can’t find anything to back up what they are saying.
Other than damaging tooth enamel and stinging if it gets in your eyes it’s perfectly safe and there is some evidence it protects organs from oxidative stress.
When a random person proposes something absurd, like something found in all citrus fruit is harmful, just nod and smile and ignore them