Bacopa – a very old traditional ayurvedic herb-may significantly reduce anxiety and promote mental functioning, raise the resistance to stress and may
improve memory and visual perception.

A few good brands:

Nature's Answer, Bacopa, 500 mg, 90 Vegetarian Capsules

Nature’s Answer, Bacopa, 500 mg, 90 Vegetarian Capsules

Paradise Herbs, Bacopa, 60 Vegetarian Capsules

Paradise Herbs, Bacopa, 60 Vegetarian CapsulesProduct

Doctor's Best, Bacopa with Synapsa, 320 mg, 60 Veggie Caps

Doctor’s Best, Bacopa with Synapsa, 320 mg, 60 Veggie Caps