I've recently bought some bluBerry (18mg nicotine) from Tesco for £4.99 and it's unbelievably painful to vape, even on a low wattage setting. Is this normal for a high nicotine product? It's like smoking a cigar! I've gone back to my 0.3mg home made liquid that my friend makes and that's fine to vape (so I know it's not my eCigarette). I'd put a brand new coil in before trying it too so it wasn't a burnt out coil causing it to be so harsh lol!