Biphentin

Medically reviewed

Published: November 28, 2022
Name of MedicationBiphentin
Generic Name of MedicationMethylphenidate HCL
How to use this medicationUse this drug as ordered by your doctor. Read all information given to you. Follow all instructions closely. Take in the morning. Some drugs may need to be taken with food or on an empty stomach. For some drugs it does not matter. Check with your pharmacist about how to take this drug. Swallow whole. Do not chew, break, or crush. You may sprinkle contents of capsule on applesauce. Do not chew. Swallow right away and follow with water or juice. Some products may also be sprinkled on yogurt. Read the package insert or talk with your pharmacist if you are not sure. After mixing, take your dose right away. Do not store for future use. If you have been taking this drug for a long time or at high doses, it may not work as well and you may need higher doses to get the same effect. This is known as tolerance. Call your doctor if this drug stops working well. Do not take more than ordered. Limit your use of caffeine (for example, tea, coffee, cola) and chocolate. Use with this drug may cause nervousness, shakiness, and a fast heartbeat. Have your blood work checked if you are on this drug for a long time. Talk with your doctor. If you are taking this drug and have high blood pressure, talk with your doctor before using OTC products that may raise blood pressure. These include cough or cold drugs, diet pills, stimulants, non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen, and some natural products or aids.
How to store this medicationStore at room temperature protected from light. Store in a dry place. Do not store in a bathroom. Store this drug in a safe place where children cannot see or reach it, and where other people cannot get to it. A locked box or area may help keep this drug safe. Keep all drugs away from pets.
How to dispose of this medicationThrow away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
Potential side effectsSigns of an allergic reaction (rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat) High blood pressure Signs of a urinary tract infection (UTI) Not able to get or keep an erection. Change in sex interest. Seizures. Change in eyesight. Erections (hard penis) that happen often or that last a long time. Change in colour of hands, feet, or other areas. Numbness, pain, tingling, or cold feeling of the hands or feet. Any sores or wounds on the fingers or toes. - Muscle pain or weakness, dark urine, or trouble passing urine. Heart attacks, strokes, and sudden deaths have happened in adults taking this drug. Sudden deaths have also happened in children with some heart problems or heart defects. Call your doctor right away if you have a fast, slow, or abnormal heartbeat; weakness on 1 side of the body; trouble speaking or thinking; change in balance; drooping on 1 side of the face; change in eyesight; chest pain or pressure; shortness of breath; or severe dizziness or passing out.
What to tell your doctor before taking this medicationIf you are allergic to this drug; any part of this drug; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had. If you or a family member have any of these health problems: Blood vessel disease, high blood pressure, heart structure problems or other heart problems, or Tourette's syndrome or tics. If you have any of these health problems: Glaucoma, agitation, anxiety, or overactive thyroid. If you have ever had any of these health problems: Drug abuse or stroke. If you have kidney disease. If you are taking any of these drugs: Acetazolamide or sodium bicarbonate. If you have taken certain drugs for depression or Parkinson's disease in the last 14 days. This includes isocarboxazid, phenelzine, tranylcypromine, selegiline, or rasagiline. Very high blood pressure may happen. If you are taking any of these drugs: Linezolid or methylene blue. If you are breast-feeding. Do not breast-feed while you take this drug. This is not a list of all drugs or health problems that interact with this drug. Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this drug with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
Be sure to tell all your health providersYes

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