Elderly people with weak legs need symptomatic medication to get well quickly. Elderly people with weak legs may be caused by cerebral infarction, lumbar disc herniation, hypokalemia and other symptoms, so according to the different causes of the medication to have a good effect. 1. Cerebral infarction: in the acute stage within the thrombolytic time window, thrombolytic treatment can be given. More than thrombolytic time window, aspirin and statin can be given for secondary prevention. At the same time, some drugs can be taken to improve cerebral circulation, brain cell metabolism and nutritional nerves for treatment, such as olanzapine capsules, piracetam tablets, cytosine sodium tablets, etc. can be beneficial to the nutrition of the nerves and promote the restoration of neurological function, so as to achieve the effect of faster recovery. 2. Herniated lumbar intervertebral disc: you can take some drugs to improve blood circulation and eliminate nerve root edema. Such as methylcobalamin tablets, ibuprofen extended-release capsules and so on for effective treatment. 3. Hypokalemia: you can take potassium chloride extended-release tablets, potassium magnesium menthonate tablets, potassium citrate granules and other drugs can effectively relieve the symptoms. If the above symptoms occur, it is recommended to take medicines under the guidance of doctor to avoid adverse reactions and effects.