Aspirin, sodium bicarbonate, and citric acid and Onsolis

• Generic Name: aspirin / citric acid / sodium bicarbonate
• Dosage Forms: n.a.
• Other Brand Names: Alka-Seltzer Extra Strength, Alka-Seltzer, Medi-Seltzer, Neutralin

Aspirin, sodium bicarbonate, and citric acid combination is used to relieve pain occurring together with heartburn, sour stomach, or acid indigestion.

The aspirin in this combination is the pain reliever. Aspirin belongs to the group of medicines known as salicylates and to the group of medicines known as anti-inflammatory analgesics. The sodium bicarbonate in aspirin, sodium bicarbonate, and citric acid is an antacid. It neutralizes stomach acid by combining with it to form a new substance that is not an acid.

Aspirin, sodium bicarbonate, and citric acid combination may also be used to lessen the chance of heart attack, stroke, or other problems that may occur when a blood vessel is blocked by blood clots. The aspirin in aspirin, sodium bicarbonate, and citric acid helps prevent dangerous blood clots from forming. However, this effect of aspirin may increase the chance of serious bleeding in some people. Therefore, aspirin should be used for this purpose only when your doctor decides, after studying your medical condition and history, that the danger of blood clots is greater than the risk of bleeding. Do not take aspirin to prevent blood clots or a heart attack unless it has been ordered by your doctor.

This combination medicine is available without a prescription.

• Generic Name: fentanyl
• Dosage Forms: buccal soluble film
• Other Brand Names: Fentora, Onsolis, Abstral, Subsys, Actiq, Duragesic, Ionsys, Lazanda, Sublimaze

Onsolis buccal soluble film contains fentanyl, a narcotic (opioid) pain medicine.

Onsolis is used to treat "breakthrough" cancer pain that is not controlled by other medicines. Onsolis is taken together with other non-fentanyl narcotic pain medicine that is used around the clock. This medication is not for treating pain that is not cancer-related, such as general headaches or back pain.

Onsolis may also be used for purposes not listed in this medication guide.