Though generally well-tolerated, side effects may include mild headache, nausea, nervousness, or trouble sleeping. These effects usually fade as the body adjusts to the medicine. Serious side effects such as chest pain, rash, or mood changes are rare but require immediate medical attention. To avoid adverse interactions, users should not mix Modalert with alcohol or other stimulants. https://modalertaustralia.com/modalert-100-mg/