Hello dear... Neurokind plus is a multivitamin capsule mainly containing B complex vitamins. They don t cause much side effects as being water soluble vitamins, the excess amount (which is not utilised by the body) is excreted through urine. So...the problem of weight gain can be taken care of by dietary modifications & regular exercise. Eat lots of fruits and vegetables, maintain adequate hydration & avoid fast foods. Other than that, avoid stress, get good sleep, think positive and stay happy. Wishing you good health. Thanks & take care.