Hydroxychloroquine use without supervision could have negative effects.
No one should use hydroxychloroquine to treat COVID-19 because it is still in the experimental stage and should only be used under a doctor's supervision.
In fact, hydroxychloroquine should not be obtained without a prescription. The CDC advises against purchasing this medication from a third party because the medications you receive may be of poor quality, contaminated, or counterfeit.
Furthermore, the National Capital Poison Center advises everyone to speak with a trusted healthcare provider or Poison Control to avoid misinformation that could lead to serious consequences, such as taking chloroquine in other, potentially fatal forms.