Vick Pyrena Tea 500mg Honey and Lemon 5 Envelopes 5g has paracetamol as an active ingredient , which raises the pain threshold and regulates temperature through its action on the nervous system. Its effect begins 15 to 30 minutes after oral administration and lasts for a period of 4 to 6 hours. Vick Pyrena is contraindicated for patients allergic to paracetamol or any component of the product. Do not use Vick Pyrena if you have liver or kidney disease.