Going to the UK shortly I bought Melatonin sleeping pills for on the plane and for jetlag. They served me well in the past.
This time I bought them from Lazada, each pill 10mg. I tried one and it did not work at all, so I went and bought some Travan 0.5mg from the local doctor and tried one and I fell asleep immediately for 8 hours.
My question is, is it possible that the Melatonin was counterfeit? Especially as I bought them from Lazada?
Is there anyway I can get them tested?