Formalities

Health
No international certificates of vaccination regarding Cholera, Typhoid, Yellow Fever or Japanese Encephalitis is demanded but recommended.
Malaria represents a little health risk between June and September in the low plains of Bhutan but not in the trekking areas. The treatment is not compulsory.
One of the most significant health risks for travellers is water-borne parasites from unclean drinking water. Use purifying water tabs to treat the water.
Lastly, Acute Mountain Sickness (AMS) can be developed at any altitude over 2000 metres if your body does not adjust with altitude. The early symptoms are headache, extreme fatigue and loss of appetite. To avoid that, your body needs acclimatization, so take your time.
Clothing
It is advised to bring warm clothing while travelling from November to February and tropical wear from March to October. Apart from this, your clothes would be adapted to your activity, trekking or tour, bike or visit…
Currency
The Ngultrum (NU) is the local currency broken into 100 Chetrum (Ch). The denomination of currency notes available is 1, 5, 10, 20, 50, 100 and 500. Coins are NU1 and Ch5, 10, 25, 50 and 100 currently in circulation. The Indian currency is also allowed in Bhutan. 
The running rate of exchanges is US 1 = NU 45 and 1 € = NU 60. 
All visitors should obtain a receipt for all currency exchange.
Insurance
To protect against unforeseen accidents and mishaps, we advise you to have travel insurance policy from your country.
International Airport Taxes
A departure tax of NU 500 (US 12) is levied at Paro airport.
Customs
The Bhutanese authorities strictly monitor the export of antiquities of any kind from the Kingdom.
Bhutan Time
Bhutan Time is UTC+6:00.