What Are the Side Effects of Critical T" looks at the risks of the CRITICAL T Testosterone Booster Supplement. Made from natural ingredients like Tongkat Ali, Diindolylmethane (DIM) and Acacetin, some users may experience minor side effects. These can be insomnia or body temperature increase from Tongkat Ali, headaches or urine color change from DIM, and interactions with meds from Acacetin. Overall, Critical T is safe but if you experience any side effects, consult a doctor.