Phenid 5 mg Tablets (Methylphenidate Hydrochloride)

Adult dose

Narcolepsy: Administer 20 ∼ 60 mg of methylphenidate hydrochloride daily in 1 ∼ 2 divided doses. Adjust the dose as appropriate according to age and symptoms.

Child dose

Children and adolescents 6 years of age and older with attention-deficit/hyperactivity disorder: Administer 5 mg of this drug per dose twice daily (before breakfast and lunch); if necessary, increase the dose by 5 ∼ 10 mg at 1-week intervals. Do not exceed 60 mg daily. Discontinue treatment if there is no improvement after taking the appropriate dose for more than 1 month.

This medication may increase the risk of sudden death when used in children or adolescents with heart problems, so caution is necessary. Adults with heart disease should also avoid this medication. Patients with hypertension should frequently check their blood pressure and heart rate while taking this medication, and it should be used more carefully if the heart condition is unstable. Prior to treatment, a detailed examination for heart disease should be conducted, and if symptoms such as chest pain or fainting occur during use, the patient should visit a hospital immediately. Patients with a history of psychosis or bipolar disorder should be especially cautious as symptoms may worsen. This medication may occasionally induce psychiatric symptoms such as hallucinations or delusions; if such symptoms occur, consultation with a physician is advised. Changes in behavior, such as aggressive behavior or hostility, may occur, so behavioral changes should be carefully monitored during treatment. Long-term use has been reported to cause growth delays, so growth status should be regularly checked, and treatment may be stopped if necessary. Patients with a history of seizures or abnormal EEGs may be at increased risk of seizures and should be administered cautiously. Peripheral vascular disorders may rarely present symptoms such as cold or color changes in fingers, so careful observation of finger condition is necessary. Vision disturbances may occur rarely, and patients should report any changes in vision. The safety and efficacy of this medication have not been established in children under the age of 5. Patients with a history of substance dependence or alcoholism should be mindful of the potential for abuse of this medication. Persistent and painful erections can occur, and if this symptom arises, immediate medical attention should be sought. This medication should not be used in patients with allergic reactions to it or those with severe anxiety, glaucoma, certain mental disorders, or severe heart diseases. Blood pressure, heart rate, mental state, and growth status should be monitored regularly during treatment, and if any abnormal symptoms arise, consultation with a physician is necessary. Additionally, potential interactions with other medications may exist, so patients must inform their healthcare provider about any medications they are taking, and should consult with their physician if pregnant or breastfeeding. Dose adjustments may be needed for children or the elderly, and immediate emergency treatment is required in the case of overdose. This medication should be kept out of reach of children and is best stored in its original container.

• Nervous hyperexcitability
• insomnia
• hypersensitivity reactions
• skin rash
• urticaria
• fever
• joint pain
• exfoliative dermatitis
• necrotizing vasculitis
• erythema multiforme

This medication should be stored in a tightly closed container to avoid exposure to air and moisture. It is recommended to keep the storage temperature between 1 degree and 30 degrees Celsius at room temperature to maintain the medication's effectiveness for a longer period.

Appearance

Yellow round tablets

Package unit

30 tablets/bottle, 200 tablets/bottle