How to Choose Hay Fever Medication That Won't Make You Drowsy: Identifying Over-the-Counter Drugs to Protect Your Work Performance

As we enter March, the season where we start to feel the presence of pollen has arrived.
Many people likely think, "I endure it while working because the medicine makes me sleepy."

However, over-the-counter drugs are evolving every year, and "non-drowsy" medications are now becoming the mainstream.

In this article, I will explain from a pharmacist's perspective how to choose over-the-counter drugs that won't lower your performance at work or while driving.

To begin with, why does it make you sleepy?

The reason hay fever medication (antihistamines) makes you sleepy is that the ingredients enter the brain.

By blocking the action of "histamine," a substance that maintains concentration and alertness in the brain, it causes strong drowsiness or a decline in concentration that you may not even be aware of.

This unconscious decline in performance is the tricky part.Even if you don't feel sleepy yourself, your judgment and reaction speed may be impaired.

The key to preventing this is to choose "medication that is less likely to enter the brain."

Look for "second-generation" ingredients

Over-the-counter drugs are categorized into "first-generation (older)" and "second-generation (newer)" based on when they were developed.

Traditional first-generation drugs have a quick effect, but the downside is that they easily cross into the brain and are prone to causing strong drowsiness.

On the other hand, newer drugs called second-generation are improved so that the ingredients are less likely to enter the brain. These are the current mainstream of over-the-counter drugs.

Check the back of the package (ingredient list) and choose one that contains the following ingredients.

Fexofenadine (Brand name: Allegra, etc.)

This is a standard ingredient also used in prescription medicine. It is considered to have extremely low penetration into the brain and causes almost no drowsiness.
It is suitable for those who do desk work or drive and need to maintain concentration.

Loratadine (Brand name: Claritin, etc.)

Many types only need to be taken once a day, and the ingredients are less affected by meals.
Recommended for those who are busy and worried about forgetting to take their medicine.

Epinastine (Brand name: Alesion, etc.)

It is said to be not only less likely to cause drowsiness but also excellent in terms of duration.
Taking it before bed can provide effects that last through the following day.

Points to note when using "non-drowsy" medication

"Less likely to cause drowsiness" does not mean "it will not make you sleepy at all."

Depending on your constitution, physical condition, lack of sleep, or concurrent use with alcohol, you may still feel mild drowsiness or lethargy even with second-generation medications. Especially on the first day of use, it is important to use them cautiously, such as avoiding them before important appointments, to check how your body reacts.

Also, for hay fever medication, "initial therapy," which involves starting before symptoms appear rather than after, is effective. By taking medication from the beginning of the pollen season, it becomes easier to suppress the peak of symptoms. If you suffer every year, consider taking early measures.

Combining with "nasal sprays" is also effective

For those for whom oral medication does not suit their constitution, using a "nasal spray" in combination is recommended.

Because they act directly on the nasal mucosa, there are almost no systemic side effects (drowsiness).

In particular, nasal sprays containing "steroids" are highly effective at suppressing inflammation at its source and are recommended for those suffering from nasal congestion. Consistent use provides stable results.

However, caution is required with nasal sprays containing vasoconstrictors such as "naphazoline." While they provide immediate relief, using them too much can actually worsen nasal congestion, so limit their use to short periods.

Don't forget lifestyle measures

To maximize the effectiveness of medication, environmental measures are also important.

Combining basic measures such as wearing masks and glasses when going out, removing pollen from clothing upon returning home, and frequent cleaning and ventilation of the room can significantly change your symptoms.

The secret to "spending time comfortably without getting drowsy" is to take comprehensive measures rather than relying solely on medication.

Summary

The following three points are key to spending this spring comfortably:

・Choose a "second-generation" antihistamine
・Look for ingredients like "fexofenadine" or "loratadine" on the label
・If you are worried about drowsiness, utilize a "steroid nasal spray"

If you are unsure which one is right for you, please consult a pharmacist or registered sales clerk at a drugstore.
If symptoms do not improve after about two weeks of use, do not push yourself and visit an otolaryngologist.

Choose your medication with the right knowledge and enjoy the pleasant spring weather.