This medication is used to help relieve sudden (breakthrough) pain in people who are already taking opioid medication around-the-clock for cancer pain. Fentanyl belongs to a class of drugs known as opioid (narcotic) analgesics. It works in the brain to change how your body feels and responds to pain.
This medication should not be used to relieve mild or short-term pain (such as due to headache/migraine, dental procedures, surgery).
Side Effects :
Nausea, vomiting, constipation, lightheadedness, dizziness, drowsiness, or headache may occur. Some of these side effects may decrease after you have been using this medication for a while. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
To prevent constipation, eat a diet adequate in fiber, drink plenty of water, and exercise. Ask your pharmacist for help in selecting a laxative (such as a stimulant type with stool softener).
To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Older adults may be more sensitive to the side effects of this drug, especially confusion, dizziness, drowsiness, and slow/shallow breathing.
During pregnancy, this medication should be used only when clearly needed. It may harm an unborn baby. Discuss the risks and benefits with your doctor.
Some products that may interact with this drug include: certain pain medications (mixed opioid agonist-antagonists such as pentazocine, nalbuphine, butorphanol), naltrexone.
Taking MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking MAO inhibitors (isocarboxazid, linezolid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, tranylcypromine) during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before treatment with this medication. Ask your doctor when to start or stop taking this medication.
Other medications can affect the removal of fentanyl from your body, which may affect how fentanyl works. Examples include cimetidine, nefazodone, azole antifungals including itraconazole/ketoconazole, calcium channel blockers such as diltiazem/verapamil, HIV drugs such as nelfinavir/ritonavir, macrolide antibiotics including erythromycin, rifamycins including rifampin, certain anti-seizure medicines including carbamazepine, among others.
Note : You can buy Abstral (Fentanyl) 400mcg [Sublingual tablet] online without prescription (No RX).