Staying safe at 5,430 m
The safest plan is two nights in Lachen or Lachung before the lake, plenty of water, no alcohol and a light dinner. Some doctors prescribe acetazolamide for travellers to high altitude; only take it on medical advice. Carry a small oxygen can, but treat it as a short help, not a cure.
At the lake, walk slowly, do not run, and keep the visit to 30–45 minutes. If anyone develops a worsening headache, vomiting, confusion or breathlessness at rest, drive down at once. Children, pregnant women and people with heart or lung disease should take medical advice before going.
Questions travellers ask
Good to know
Should I take medicine for altitude?
Only on a doctor's advice. Acetazolamide is commonly prescribed to help prevent altitude sickness, but it is not right for everyone and has side effects. Discuss it with your doctor before you leave home. Never take it as a substitute for going down when symptoms get worse.
Do drivers carry oxygen?
Many do, and you can buy portable oxygen cans in Gangtok or Lachen. Oxygen gives short relief but does not replace descent. If symptoms are serious, go down immediately. Cans cost about ₹300–700 each. Check before leaving Lachen, and keep the can in the car where you can reach it.
Can I go to Gurudongmar after only one night in Lachen?
Most packages do exactly that, and most healthy adults manage. A second night lowers the risk. If you felt unwell in Lachen, skip the lake rather than force it. Tell your driver at once if anyone feels worse on the way up.
Also in Gurudongmar Lake
More hours to plan around
