Scopolamine is a first-line medication for prevention of motion sickness and should be administered transdermally several hours before the anticipated motion exposure.
First-generation antihistamines, although sedating, are also effective.
Probably the main reason why anyone would take one of them now is the fact that you can buy them without a doctor’s prescription and that they don’t usually cost as much.
The jury is still out on whether homeopathic medicines are actually effective, though some people swear by them.
This sedating activity is sometimes used in managing conditions such as eczema where sleep maybe disturbed due to pruritus.
Sedating antihistamines also have significant antimuscarinic activity and should be used with caution in patients with prostatic hypertrophy, urinary retention and angle-closure glaucoma.
These are older drugs which are rather non-specific in their action.
Many antihistamines are available over the counter. There are two types of antihistamine – first generation (sedating) and second generation (non-sedating). Antihistamines come in different formulations: tablet, capsule, syrup, nasal spray, gel, cream and lotion.
There are tons of allergy medicines available, both over the counter and by prescription. An antihistamine is a drug that blocks a receptor for histamine.
First, it will be helpful to explore the main type of medicine used to treat allergies, which is an antihistamine.
As the name suggests, antihistamines block the action of histamine. Never drive or operate machinery when taking one of these drugs and be aware that the effect may persist for some time, or into the next day if you take a dose at night.
When someone has an allergy to a normally harmless substance like pollen or pet dander, the immune system treats it as if it were 'foreign' like a virus or bacterium. There is some evidence that people who regularly take sedating antihistamines are more likely to have a serious accident.
It responds to the perceived threat by unleashing a cascade of inflammatory molecules, one of which is histamine. These drugs may also affect your mental performance at work or school so it is better to opt for a non-sedating antihistamine if this is important to you, particularly if you have an important event like an exam or wedding coming up.