Since your headache started after taking Revital, you may pause the supplement for a few days and see if the headache improves. Revital contains vitamins, minerals, and ginseng and is generally well tolerated, but some people may experience side effects such as a headache. However, the headache may also be due to other factors, such as dehydration, stress, lack of sleep, or an underlying medical condition. Stay well hydrated and, if the headache persists, worsens, is severe, or is accompanied by other unusual symptoms, consult a healthcare professional.