Hi I am hoping for some advice . My mother us a slim 78 year old and always been active. Shes taking metformin for diabetes 2. Shes had this now for about 8 years. I am wondering about suggesting vitamin supplements to her as she is lately looking more tired and gets bad cramp in her thigh which is debilitating and has now caused her to limp . I read that magnesium helps with cramp. But i do not know if its ok for her as i dont know what strength etc or much about it.she likes to stay active and i want her to get her strength back. I havd seen other supplements like zinc vit b12 etc and so on and there are so many different ones she could take but could she overload on them if i bought too many different ones that individually are good for her but could they also cause a problem as in make her have any bad reactions or what? I want her to have some supplements/ vitamins to help her but not cause any health problems. also different strengths i really dont know. She is a bit more forgetful but very intelligent if there is anything i can do to help i will but should vitamin supplements be bypassed by a doctor rather than me buying them for her without a doctor okaying them? I know as she is 78 one could think its an age thing but its not for her. Its become more noticable of her leg limping a bit etc. Any suggestions please.!