 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  motion sickness when medication cannot be given by mouth.Dimenhydrinate injection should not be used in newborns because of an increased risk of side effects. How to use Dimenhydrinate Vial This medication is injected into a vein (IV), or it can be injected into a muscle by a health care professional, as directed by your doctor. Your dosage is based on your medical condition and response to therapy. Tell your doctor if your condition lasts or gets worse.The side effects of Dimenhydrinate Injection: Drowsiness, constipation, blurred vision, or dry mouth/nose/throat may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. To relieve dry mouth, suck on (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water or use a saliva substitute. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor right away if you have any serious side effects, including: mental/mood changes (such as restlessness, confusion), fast/irregular heartbeat, shaking </s>