However, it may cause other health problems or unpleasant symptoms, which are worth avoiding. Vitamin syrups that fight anorexia and help you gain weight fast are vital to recovering from a severe loss of appetite or a serious medical condition that causes you to lose weight. Pin on Health, Diet and Exercise Even if those sugars are coming from vitamin gummy bears. Does vitamin make you gain weight . No, vitamin b1 do not cause weight gain. Drugs.com reports that rapid weight gain is one of the common side effects of vitamin b12 injections. Research has shown that the use of vitamin c in artificial form can allow for weight increases. Vitamins contain minerals and help your body and your baby’s body in other ways. When i read that thread, i stopped taking alot of my vitamins. The more sugars that you consume, the more insulin that is produced and the stronger storing effect this has on your body. Additionally, biotin may increase weight by causing fluid retention....