Focus & Concentration

The full daily serving of 4 capsules contains 200 mg of green tea extract standardised to 40 % L-theanine. That equals 80 mg of L-theanine, not 200 mg of the pure substance. Similarly, 250 mg of bacopa extract with 50 % bacosides provides 125 mg of bacosides. When comparing products, look for the amount of the specific substance and check whether the table refers to a capsule or a full serving.

It depends on the product. BJP Nootropics Longevity contains trace amounts of caffeine from tea extract according to its description; Matcha + Collagen contains caffeine from matcha and is not intended for evening use. Count coffee, tea and pre-workout blends too. L-theanine does not remove caffeine from your body or guarantee protection against jitters or disturbed sleep. If you are sensitive to caffeine, check its content before choosing.

First add up overlapping vitamins from the full daily servings. BJP Nootropics Longevity, for example, supplies 12 mg of vitamin B6 per day, so another B-complex is not automatically an appropriate addition. Long-term high B6 intake carries a risk of peripheral nerve damage. Before combining products or taking high doses for a long period, discuss the specific formulas with a pharmacist or doctor.

Viridian Choline is a simple formula containing choline in bitartrate form. Brain Support Multi combines choline, bacopa and a range of vitamins and minerals. BJP Nootropics Longevity uses citicoline alongside other ingredients. The name 'choline' is therefore not enough for a direct comparison: check its form and the other substances too. More ingredients does not by itself guarantee better concentration.

Distinguish standalone ginkgo from a blend. As well as ginkgo, Ginkgo Hypericum contains St John's wort, which can change the effects of many medicines, including hormonal contraceptives and antidepressants. With ginkgo itself, particular caution is needed with treatment that affects blood clotting. Show a doctor or pharmacist the full formula and your medication list before use; simply taking them at different times may not resolve an interaction.