Demser
Demser
Treats symptoms caused by pheochromocytoma (tumor of the adrenal gland). Used before surgery that removes adrenal gland tumors.
Antihypertensive
Capsule
By mouth
Demser is used by patients with pheochromocytoma to treat their condition. Demser works by decreasing the hormones made by the tumor in the infected adrenal gland. This prescription-only medication manages hypertension levels in pheochromocytoma patients before undergoing a medical procedure.
Capsule
Capsule 250MG
Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.
Drink extra liquids so you will pass more urine while you are taking this medicine. This will keep crystals from forming in your urine.
Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.
Keep all medicine out of the reach of children. Never share your medicine with anyone.
Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.
You should not take this medicine if you have had an allergic reaction to metyrosine (Demser®).
Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
Make sure your doctor knows if you are pregnant or breast feeding, or if you have heart, kidney, or liver problems.
After you have stopped using this medicine, you may have trouble falling asleep at night and have an unusually high energy level. These feelings may last for 2 or 3 days.
This medicine may make you drowsy. Avoid driving, using machines, or doing anything else that may be dangerous if you are not alert.
Make sure any doctor who treats you knows that you are using this medicine. This medicine may affect the results of certain medical tests.
After you have stopped using this medicine, you may have trouble falling asleep at night and have an unusually high energy level. These feelings may last for 2 or 3 days.
Make sure your doctor knows if you are also using phenothiazines, such as prochlorperazine, Compazine®, Mellaril®, Phenergan®, Thorazine®, or Trilafon®, or if you are also using haloperidol (Haldol®).
Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.
Avoid drinking alcohol while you are using this medicine.
Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
Serious Side Effects
Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
Stuffy nose.
Swelling or tenderness in your hands or feet.
Swollen breasts, or liquid discharge from your nipples.
Blood in your urine, or painful urination.
Difficulty speaking.
Drooling, or dry mouth.
Feeling unusually sleepy or tired.
Feeling unusually sad, anxious, or confused.
Headache.
Men: unable to have or keep an erection.
Nausea, stomach pain, vomiting, or diarrhea.
Seeing or hearing things that are not there.
Shaking or twitching of your hands or other body parts.
Less Serious Side Effects
Feeling unusually sleepy or tired.
Blood in your urine, or painful urination.
Shaking or twitching of your hands or other body parts.
Men: unable to have or keep an erection.
Swelling or tenderness in your hands or feet.
Difficulty speaking.
Seeing or hearing things that are not there.
Bleeding or bruising easily.
Drooling, or dry mouth.
Headache.
Swollen breasts, or liquid discharge from your nipples.
Nausea, stomach pain, vomiting, or diarrhea.
Stuffy nose.
Feeling unusually sad, anxious, or confused.
Health education, drug info, wellness & more
SingleCare is a prescription discount service that offers free coupons on thousands of prescription drugs. It can be used whether you have insurance, Medicare, Medicaid, or none of the above, but it cannot be combined with insurance.
SingleCare provides transparent drug pricing, so you can compare discounts at pharmacies near you. Browse singlecare.com to find drug discounts, helpful information about your prescription, and resources to help you make informed health decisions.
Prescription savings vary by prescription and by pharmacy, and may reach up to 80% off cash price. This is a medical discount plan. This is NOT insurance. This program offers you the opportunity to locate providers of various types of medical services who will offer their services to you at discounted rates. The range of discounts for medical or ancillary services provided under the plan will vary depending on the type of provider and service received. You are fully responsible for paying for all health care services but will be entitled to receive a discount from those health care providers in accordance with the specific pre-negotiated discounted fee schedule. This program does not guarantee the quality of the services or procedures offered by the providers. Except for prescription drugs which you will pay directly to the pharmacy at the time of purchase, all other services received through a program provider will be charged to the credit card on file in your member account. The charge will include an administrative fee for use of the program. Towers Administrators LLC is the licensed discount medical plan organization with its administrative office located at 4510 Cox Road, Suite 111, Glen Allen, VA 23060. SingleCare Services, LLC is the marketer of the discount medical plan organization including its website, singlecare.com, with its corporate office located at 99 High Street, Suite 2800, Boston, MA 02110. For additional information, including an up-to-date list of providers, or assistance with any issue related to program membership, please contact member support any time at www.singlecare.com, or by calling toll-free 844-234-3057, 24 hours, 7 days a week (except major holidays). Pharmacy names, logos, brands, and other trademarks are the property of their respective owners.
Blog articles are not medical advice. They are intended for general informational purposes and are not meant to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. If you think you may have a medical emergency, immediately call your physician or dial 911.
© 2025 SingleCare Administrators. All rights reserved
© 2025 SingleCare Administrators. All rights reserved