Seems to be of good benefit but needs to be taken over a fairly long period
Hyperiforce® St. John's wort tablets contain the extract of hypericum obtained from freshly harvested, organically grown herbs.
One tablet contains 66 mg of extract (as dry extract) from fresh St John’s wort (Hypericum perforatum L.) flowering herb (equivalent to 170-305 mg of dried St John’s wort flowering herb). Extraction solvent: Ethanol 68% V/V.
The other ingredients used for the tablet are microcrystalline cellulose, croscarmellose sodium, colloidal anhydrous silica and glycerol distearate.