Allergy season in Portugal: Pine pollen and over-the-counter antihistamines
Every spring, newcomers in Portugal wake up to a yellow film on the car, the balcony and the café table, then spend weeks sneezing and assuming the pine trees are to blame. This guide explains what is really in the air, when each pollen peaks, and how to buy antihistamines at a Portuguese farmácia without guessing at the counter.
What Is Actually Making You Sneeze in Portugal
My first March in the Setúbal area, I was sure the maritime pines behind our rented house were trying to kill me. The patio furniture turned mustard yellow overnight, puddles had a golden ring around them, and my eyes itched from breakfast to bedtime. A Portuguese neighbour laughed kindly and told me the pines were only half the story. She was right, and knowing that changed how I treated my allergies.
Pine Pollen: Highly Visible but Often Not the Main Culprit
Portugal has huge stretches of pine forest. Maritime pine (pinheiro-bravo) covers much of the centre and north, including the coastal belt around Leiria and the Pinhal de Leiria. Stone pine (pinheiro-manso) dominates the sandy soils south of the Tagus and around Alcácer do Sal. Both release enormous amounts of pollen in spring, and the grains are large enough to see.
That visibility is misleading. Pine pollen grains are big and heavy, so they settle quickly on surfaces rather than staying in the air at nose level, and pine is considered a relatively weak allergen. Some people are genuinely sensitised to it, but for many expats the yellow dust is a coincidence: it arrives during the same weeks as far more irritating pollens you cannot see.
Pine dust still matters, though. It is an irritant in its own right, and heavy deposits on windowsills and car vents can aggravate eyes and airways that are already inflamed. Rinsing it off and keeping windows closed on windy days helps, whatever your specific trigger turns out to be.
The Invisible Triggers: Grasses, Olive, Plane Trees and Parietaria
Grass pollen (gramíneas) is the headline allergen across most of Portugal, peaking in late spring and early summer. If your worst weeks run from roughly May into June, grasses are a likely suspect.
In the Alentejo and inland areas, olive trees (oliveira) are a major trigger in late spring. The montado landscape of cork and holm oak also releases oak pollen. In Lisbon, Porto and other cities, the London plane trees (plátanos) lining avenues produce a short, sharp burst in early spring that catches many people off guard.
Then there is Parietaria, a wall-growing weed known locally as alfavaca-de-cobra. It thrives in old stone walls, so historic neighbourhoods such as Alfama or the Ribeira can be surprisingly rough, and its season can stretch for months. Cypress (cipreste) adds a winter wave, which is why some people sneeze in January and blame a cold.
A Portuguese Pollen Calendar at a Glance
Seasons shift with rainfall and temperature, and the south usually starts earlier than the north. Use this as a general guide, not a promise.
| Pollen source | Portuguese name | Typical peak | Where it hits hardest | Allergy strength |
|---|---|---|---|---|
| Pine | Pinheiro | Late winter to spring | Coastal centre, Setúbal Peninsula, Leiria | Usually mild, highly visible |
| Cypress | Cipreste | Winter into early spring | Cities, parks, cemeteries | Moderate |
| Plane tree | Plátano | Early spring, short burst | Lisbon, Porto, urban avenues | Moderate to strong |
| Olive | Oliveira | Late spring | Alentejo, Trás-os-Montes, Beira Interior | Strong |
| Grasses | Gramíneas | Late spring to early summer | Nationwide | Strong, most common |
| Parietaria | Alfavaca-de-cobra | Spring through autumn | Old stone walls, historic centres | Strong for sensitised people |
| Oak | Carvalho, sobreiro, azinheira | Spring | Montado areas, interior north | Moderate |
Buying Antihistamines in Portugal Without the Guesswork
The single biggest shock for many newcomers is that there are no shelves of allergy tablets at the supermarket checkout. In Portugal, medicines are sold through farmácias, and a defined list of non-prescription medicines can also be sold at registered parafarmácias. For a full rundown of how the system is organised, see Pharmacies and Medication in Portugal: Prescriptions and OTC Drugs.
Behind the Counter Does Not Mean Hard to Get
Medicines that do not require a prescription are called MNSRM, short for medicamentos não sujeitos a receita médica. Most common oral antihistamines for hay fever fall into this category, but you will usually ask the pharmacist rather than pick a box off an open shelf. This is normal, and Portuguese pharmacists are well trained, often speak good English in cities and tourist areas, and genuinely want to know your symptoms.
Some newer or stronger options, including certain antihistamines and many steroid nasal sprays, may only be available on prescription. Which product sits in which category is set by Infarmed, the national medicines authority, and it can change, so the pharmacist is the right person to ask. The difference between the two types of shop is covered in Pharmacies in Portugal: Farmácia vs Parafarmácia.
Active Ingredients to Ask For by Name
Brand names differ from what you know back home, so ask by active ingredient. Pharmacists recognise these instantly:
| Active ingredient | How it usually feels | Good to know |
|---|---|---|
| Cetirizina | Fast, effective, mild drowsiness in some people | Widely stocked, generics common |
| Loratadina | Gentle, less drowsy for most | Often a first suggestion |
| Desloratadina | Once-daily, non-drowsy for most | Availability without prescription can vary |
| Bilastina | Non-drowsy, take on an empty stomach | Often prescription only |
| Fexofenadina | Non-drowsy | Ask whether it needs a receita |
| Eye drops with antihistamine | Targets itchy, watery eyes | Ask for colírio antialérgico |
| Saline nasal rinse | Clears pollen from the nose | No medicine, safe to use alongside tablets |
Ask for a medicamento genérico if you want the cheapest version. Generics are common in Portugal and contain the same active ingredient as the brand.
Useful Phrases at the Pharmacy Counter
You do not need fluent Portuguese, but a few phrases make the conversation smoother:
- “Tenho alergia ao pólen.” I have a pollen allergy.
- “Tem um anti-histamínico que não dê sono?” Do you have an antihistamine that does not cause drowsiness?
- “Tem a versão genérica?” Do you have the generic version?
- “Tenho os olhos a arder e o nariz entupido.” My eyes are burning and my nose is blocked.
- “Estou a tomar outros medicamentos.” I am taking other medicines.
That last sentence matters. Tell the pharmacist about anything else you take, especially sedatives, blood pressure medication or anything for sleep, and mention pregnancy or breastfeeding.
If your symptoms flare at night or on a Sunday, every area has a rotating duty pharmacy; see What is a Farmácia de Serviço and how to find one open at 2 AM.
Bringing, Refilling and Supplementing Your Allergy Routine
Many of us arrive with a favourite allergy pill from home and panic when it runs out. Plan before your stock gets low.
Prescriptions From Abroad and Bringing Your Own Supply
A prescription written in another country does not automatically work at a Portuguese pharmacy, and the rules differ depending on where it came from. The details are explained in Can I use a US or UK medical prescription at a Portuguese pharmacy?. If you plan to pack several months of medication in your luggage, read Bringing Prescription Drugs to Portugal: Customs and Import Rules first.
The practical approach most expats settle on is simple: bring enough to cover your first weeks, then find the local equivalent of your active ingredient at a farmácia, or get a Portuguese prescription for the stronger options.
Supplements and Products Ordered Online
Some people like to support their spring routine with saline rinse kits, quercetin or other supplements. Portuguese pharmacies and health food shops stock a fair range, but plenty of expats order from iHerb when they want a specific brand they used at home. Bear in mind that parcels from outside the European Union can attract customs charges and handling, so check the shipping and duty details on iHerb’s own site before ordering.
Supplements are not a substitute for proven antihistamines, and some interact with medication. Show the label to your pharmacist if you are unsure.
When Insurance Becomes Relevant
Mild seasonal allergies rarely need more than a pharmacy visit. If you suspect asthma, need allergy testing or are considering immunotherapy, you will want to see an allergist (alergologista). In the public system that typically means a referral through your family doctor, which can take time.
Expats on international plans such as Cigna Global, or on local private plans, often book a private allergist directly. Whether skin-prick testing, specialist visits or prescription medicines are covered depends entirely on your policy, so check your Cigna Global documents or your insurer’s own page before booking. A broader overview is in Private Health Insurance in Portugal: Costs, Coverage, and Best Providers, and for finding English-speaking clinicians see Finding Doctors and Specialists in Portugal: English-Speaking Medical Care.
A Practical Spring Survival Plan for Portugal
After several seasons here, this is the routine that keeps me functional from February to June.
Step-by-Step Routine for High-Pollen Days
- Check the weekly pollen bulletins from the Portuguese Aerobiology Network, which the Portuguese allergy society, SPAIC, publishes by region.
- Start your chosen antihistamine a little before your usual bad weeks rather than waiting for full symptoms.
- Keep windows closed on dry, windy days, especially in the late morning and early evening.
- Shower and change clothes after walks in pine woods, parks or the countryside.
- Rinse your nose with saline at night to clear the day’s pollen.
- Dry laundry indoors during peak weeks, as sheets on the line collect pollen.
- Wipe yellow pine dust from windowsills, balconies and car vents with a damp cloth.
- Wear wraparound sunglasses on the beach promenade or hiking trails.
Indoor triggers matter too. Damp Portuguese homes in winter can breed mould, which keeps your nose irritated before pollen season even begins; Heating and Insulation in Portuguese Homes: Fighting Winter Cold and Mold has practical fixes.
Watch Out for the Pine Processionary Caterpillar
This is the genuinely dangerous pine-related hazard. From late winter into spring, the pine processionary caterpillar (lagarta do pinheiro) leaves its silky nests in pine branches and travels in nose-to-tail lines across paths. Its tiny hairs cause painful rashes and eye irritation in people, and they are a veterinary emergency for dogs who sniff or lick them.
Keep children and pets away from the lines, never touch the nests, and if your dog’s tongue or mouth swells after a pine-woods walk, go to a vet immediately. Many parks and councils treat or remove nests, but woodland trails are not always cleared.
Knowing When to Call for Help
For persistent symptoms, uncertainty about medicines, or advice on whether you need a doctor, the public SNS 24 helpline is useful. As of October 2026, the number is 808 24 24 24, clinical triage runs 24 hours a day, and calls cost the same as a call to a landline. More on how triage works is in SNS 24 Helpline (808 24 24 24): Triage, Advice, and Sick Notes.
Hay fever is miserable, but it should not stop you breathing. If you or someone with you has wheezing, tightness in the chest, swelling of the lips or tongue, or difficulty breathing, call 112 straight away. What happens next is explained in Emergency Medical Care in Portugal: Calling 112 and Going to the Hospital.
The good news is that once you know your real trigger and the right active ingredient to ask for, spring here becomes what it should be: almond blossom in the Algarve, wildflowers across the Alentejo, and long lunches outdoors, with only the occasional sneeze.
Disclaimer
This article is for general informational purposes only and does not constitute professional advice. Laws, prices and regulations vary by location and change over time. Consult a qualified professional for guidance on your specific situation.
