Most people start their allergy medicine on the first bad day: streaming eyes, a nose that won't stop, a sneezing fit on the bus. By then, though, the season has already had a head start. For some treatments, that timing is the difference between a manageable spring and a miserable one.
This guide covers when to start, the difference between medicines taken every day and those taken as needed, and how to keep a routine going for a season that can last months. It does not tell you which medicine to use or how much. Your pharmacist or doctor can help you choose, especially if you have asthma, take other medicines, are pregnant, or are treating a child.
When the season actually starts
Allergy seasons depend on what you react to and where you live. The NHS notes that in the UK, hay fever symptoms are usually worse between late March and September, especially on warm, humid and windy days.
The most useful date is your own. Look back at last year: when did your symptoms start? A note in your calendar, a photo timestamp, or the date on last year's pharmacy receipt all work. That date, not the calendar's idea of spring, is what to plan around.
Why starting early can help
Not all allergy medicines work at the same speed. The biggest difference is between two common types.
Steroid nasal sprays take time
Steroid nasal sprays reduce inflammation in the nose. MedlinePlus says it may take 2 weeks or more for symptoms to improve, that the spray works best when used every day, and that starting at the beginning of pollen season works best for reducing symptoms during that season.
In practice, that means a spray started on your first bad day may not reach full effect until the worst weeks are nearly over. That is why MedlinePlus says starting at the beginning of pollen season works best. Ask your pharmacist or doctor when to start the product you use.
Antihistamines work faster
Antihistamine tablets and liquids generally start working much more quickly, which is why they are often used when symptoms flare. Some people take them every day through the season, and some take them only on bad days. Which approach suits you depends on how often and how badly your symptoms come, and is worth discussing with a pharmacist.
Antihistamines also differ in how drowsy they make people. Our guide to drowsy vs non-drowsy antihistamines covers that in detail, including why it matters for driving and for evening timing.
Other options
The NHS lists antihistamine eye drops and nasal sprays among the treatments a pharmacist can recommend, and notes that a GP may prescribe other treatments or refer you for immunotherapy if pharmacy treatments aren't enough. Immunotherapy is a longer-term treatment that builds tolerance gradually, and has its own schedule set by the specialist.
Daily vs as-needed: why it matters for your routine
The label on your medicine tells you how it is meant to be used. It helps to sort what you take into two groups:
- Daily medicines. These are taken every day through the season, whether or not you feel bad that day. A steroid nasal spray is the typical example. MedlinePlus says a steroid spray works best when it is used every day.
- As-needed medicines. These are taken when symptoms appear, within the limits on the label. Some antihistamines and eye drops are often used this way.
The routine problems are different for each. With daily medicines, the risk is stopping once you feel better, which is usually because the medicine is working. With as-needed medicines, the risk is losing track of how much you have taken on a bad day. Always stay within the maximum on the label or what your pharmacist told you.
If you use an as-needed medicine with a minimum gap between doses, write down the time you take it. The next dose time calculator works out when the next dose is allowed, which is handy on a day when symptoms keep coming back.
Keeping it going for months
A pollen season can run for months. Few people struggle to use a spray in week one. The hard part is week eight, when it has become background noise.
Anchor it to something you do every day
Use the spray when you brush your teeth, or take the tablet with breakfast. MedlinePlus notes that stinging from a steroid spray can be reduced by using it after a shower, which can make a morning shower a natural anchor.
Keep it where you'll see it
A spray kept in a drawer is easy to forget. One kept next to your toothbrush is not.
Plan the whole season, not just the start
Put two dates in your calendar: when to start, based on last year's symptoms, and roughly when your season usually ends. Ask your pharmacist or doctor when it is sensible to stop, rather than stopping on the first good week.
Watch the supply
Running out halfway through June is a common way for a season to go wrong. A nasal spray has a set number of sprays, and a box of tablets a set number of days. The days supply calculator works out how long a pack lasts at the amount on the label, so you can buy or reorder before it runs out.
Reduce exposure too
Medicine works better alongside simple steps. The NHS suggests showering and changing clothes after being outside, keeping windows closed, wearing wraparound sunglasses, and avoiding cutting grass or drying washing outside on high-pollen days.
When to see a doctor
The NHS advises seeing a GP if your symptoms get worse or don't improve after trying pharmacy treatments. Also seek advice sooner if:
- You have asthma and your breathing is worse during pollen season.
- You get wheezing, chest tightness or shortness of breath.
- You are unsure whether a medicine is safe with your other medicines, during pregnancy or for a child.
Do not combine several allergy products without checking with a pharmacist, since some contain the same or similar ingredients.
Where Doz fits
If you already use an iPhone medication reminder for other medicines, adding your seasonal allergy medicine to it keeps one routine instead of two. Doz can tie a daily dose to a real mealtime, send a follow-up nudge if a dose stays unlogged, and send refill reminders while you still have some left. Doz groups medications by prescription along with how long the course runs, so you can set the medicine up for the length of the season your doctor or pharmacist suggests.
Frequently Asked Questions
When should I start taking allergy medicine?
For steroid nasal sprays, MedlinePlus says it may take two weeks or more to see improvement and that starting at the beginning of pollen season works best. Use last year's start date as a guide and ask your pharmacist what suits you.
Should I take allergy medicine every day or only when I have symptoms?
It depends on the medicine. Steroid nasal sprays work best when used every day through the season. Some antihistamines are used daily and some as needed. Follow the label and ask your pharmacist which approach fits how often your symptoms come.
How long does a steroid nasal spray take to work?
According to MedlinePlus, it may take two weeks or more for symptoms to improve. That is why it helps to start before your season and use it every day.
Can I stop my allergy medicine when I feel better?
Feeling better mid-season often means the medicine is working. Stopping a daily treatment early can bring symptoms back. Ask your pharmacist or doctor when it is sensible to stop, usually around the end of your pollen season.
Are non-drowsy antihistamines better?
They are often preferred during the day because they are less likely to make you sleepy, but they are not the right choice for everyone. Our guide to drowsy vs non-drowsy antihistamines explains the difference. Ask a pharmacist which suits you.
Where to start
Find the date your symptoms started last year and put a reminder in your calendar a little before it, so you can ask about starting at the beginning of the season. Take that date to your pharmacist with a list of your other medicines and ask which treatment to start, and when. Then anchor it to something you already do every day.
Sources
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