As the years advance, we may start to notice that things might get a little bit "fuzzy." Fortunately, you don’t have to simply accept that your mind isn’t quite as sharp as it used to be. Swanson Maximum Strength Huperzine A benefits those who want to stay sharp at any age. Huperzine A is an extract from the Chinese club moss huperzia serrata and the exciting subject of ongoing research investigating its potential to support cognitive functions and memory.* Our huperzine A dosage comes in maximum strength 200 mcg capsules to give you four times the brain-nourishing power.