If it is not safe for you to use stimulants due to any medical condition, please do not use this product.
Do not use methylene blue if you are pregnant, breastfeeding, or have G6PD deficiency.
To avoid the risk of serotonin syndrome, do not use methylene blue if you are taking serotonergic drugs such as selective serotonin reuptake inhibitors (SSRI), serotonin and norepinephrine reuptake inhibitors (SNRI), or monoamine oxidase inhibitors (MAOi) unless directed by your healthcare practitioner.
There is also a potential risk for serotonin syndrome when methylene blue is used in combination with “psychedelics” that block serotonin reuptake therefore one should avoid this combination.