I had always tried other b12 pills from well-known brands and I really did not feel any difference yet I felt tired! But these are very different give me much encouragement throughout the day are very easy to tell and have no taste at all! I take them in the morning and during the day I spend very lively and without the typical tiredness. 100% recommendable! Buy here: https://www.zenwiselabs.com/products/vitamin-b-12