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Altitude Sickness

If you’re planning to travel to high-altitude destinations, altitude sickness can be an unexpected concern. At Periville Pharmacy, we provide trusted advice, prevention support, and altitude sickness medication to help you stay well and travel with confidence.

Based in Grimsby, with two branches on Cromwell Road and Wingate Road serving nearby areas including Laceby, Keelby, Great Coates, and Healing, our expert pharmacists are here to support you before and during your journey.

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What Is Altitude Sickness?

Altitude sickness, also known as high altitude illness, can happen when you travel to places over 2,500 metres above sea level. At higher altitudes, oxygen levels drop, and your body may struggle to adjust, especially if you ascend too quickly.
It’s commonly experienced in destinations such as the Alps, Mount Kilimanjaro, La Paz, or trekking routes. While symptoms are often mild and improve with rest, altitude sickness can occasionally become serious if not managed early.

Altitude Sickness Symptoms to Watch For

Symptoms usually start 6–10 hours after reaching a high altitude and may include:
  • Headache
  • Loss of appetite
  • Feeling sick or vomiting
  • Extreme tiredness
  • Dizziness or light-headedness
  • Difficulty sleeping
Mild symptoms are common and often settle with rest. However, if symptoms worsen or do not improve, it’s important to act quickly to avoid complications.

What to Expect
at Your Appointment

  • Private consultation with a pharmacist
  • Assessment of your symptoms
  • Clear recovery plan and guidance

What Causes Altitude Sickness?

  • Altitude sickness is most likely when:
  • You travel to high altitude too quickly.
  • You don’t give your body time to acclimatise.
  • You’ve had altitude sickness before.
  • You become dehydrated or drink alcohol.
  • Understanding these triggers is key to altitude sickness prevention and safer travel planning.
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Altitude Sickness Treatment & Relief

Most cases improve with rest at the same altitude. However, our expert pharmacists can advise on altitude sickness treatment, including:
  • Pain relief such as paracetamol or ibuprofen.
  • Anti-sickness medication.
  • Preventive medication for those at higher risk.
  • Guidance on when to descend or seek urgent medical care.
In more severe cases, oxygen therapy or hospital treatment may be required, and we will clearly advise you when to seek urgent medical care or escalation.

How to Prevent Altitude Sickness

Simple steps can greatly reduce your risk:
  • Ascend slowly and allow time to adjust.
  • Take rest days during climbs.
  • Drink plenty of water.
  • Avoid alcohol.
  • Avoid sleeping much higher than the previous night.
  • Speak to a pharmacist before travel if you’ve had altitude sickness before.
Prevention is most effective when advice is taken before you travel, not once symptoms have started. Our team can provide guidance on altitude sickness prevention strategies tailored to your trip.

Why Choose Periville Pharmacy?

  • Expert travel health advice from trained pharmacists.
  • Support with altitude sickness medication and prevention.
  • Friendly, confidential consultations.
  • Convenient local access across Grimsby and surrounding areas.
  • Clear, practical advice tailored to your destination and travel pace.

Speak to Us Before You Travel

Don’t let altitude sickness disrupt your plans. If you’re travelling to a high-altitude destination, speak to our pharmacy team today for expert advice and support. Visit any of our two branches or book an appointment in advance to travel with confidence.
Book An Appointment

FAQs

Altitude sickness can begin within 6 to 10 hours after reaching a high altitude, particularly if you ascend quickly without allowing time to acclimatise.
In most cases, symptoms are mild and manageable. However, if they worsen or are ignored, altitude sickness can become serious and require prompt action.
Yes. Preventive medication may be suitable for some people, especially those at higher risk or travelling to high altitudes quickly. A pharmacist can advise whether this is appropriate for you.
No. If symptoms develop, you should stop ascending and rest at the same altitude until you feel better.
If symptoms do not improve within 24 hours or begin to worsen, descending by 300–1,000 metres is usually recommended.

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