PBM Therapy does not create side effects like prescription or over the counter drugs.  Some of the healthiest populations are where the sun is able to deliver consistently higher levels of red and near infrared light to your body.  This could help explain why those who live in the Mediterranean have such good general health (along with a healthy diet too!).   No adverse effects that we are aware of have been reported in the scientific literature.   If you look at the FDA, Health Canada, TGA or MHRA websites there are no reports of adverse events from Photobiomodulation – PBM Therapy.  There are some medical conditions which are contraindicated to have with PBM Therapy so you need to be aware of these before you book your initial consultation.