Here's a look at some of the herbs and spices found to benefit the brain in scientific studies. You can return the items within 365 days for a full refund. This is because these drugs can have numerous side effects, as cited by authorities like the NHS, FDA and investigations from the media. Acidophilus has often been cited to treat a multitude of health conditions, and to contribute to a positive mood. Probiotics such as Acidophilus are now seen as a necessary supplement for those aiming for holistic optimisation of performance and productivity.