Histantil (Promethazine) is a prescription used to help induce sleep, treat allergies, motion sickness, vomiting and nausea. It may also be used to help with the symptoms of the common cold or to sedate people who are agitated or anxious. Promethazine is an antihistamine that belongs to the phenothiazine class. It blocks the effects of the naturally occurring histamine in your body during an allergic reaction. For anti-nausea and pain relief, it works by affecting other natural substances and by acting directly on certain parts of the brain. The effects of the medication can be felt within 1 hour.
Manufacturer Information
Canadian Pharmacy King currently offers the brand Histantil from Canada manufactured by Pendopharm Pharmascience. There is no generic available for this medication. Histantil is available in the strength of 50 mg tablets.
The common side effects of Histantil may include blurred vision, confusion, disorientation, dry mouth, fatigue, feeling nervous, nausea, vomiting, etc.
Talk to your doctor right away if you have any of the serious side effects such as:
• Fast or slow heart rate;
• Faintness;
• Increased or decreased blood pressure;
• Sensitivity of skin to sunlight;
• Yellow skin or eyes
This is not a complete list of side effects and others may occur. Please call your doctor if you have any further concerns or questions.
You should not take Histantil if you are allergic to Promethazine or if you have any other allergies. Before you start taking this medication, talk to your doctor about your medical history and about all the medications you take including OTC and herbal medications. This medication may make you dizzy or drowsy or blur your vision. Alcohol and marijuana can make you drowsier or dizzier. Avoid alcoholic beverages. Talk to your doctor if you are using marijuana. This medication may make you sweat less, which can make you more likely to get heat stroke. Histantil should only be used during pregnancy if it is clearly needed. It is unknown if Promethazine passes into breast milk. Talk to your doctor before breast-feeding.