Chemical suppliers like Sigma-Aldrich and Phytolab provide high-purity hyperforin (often >98%) for scientific applications.
Standard herbal extracts often only guarantee a certain percentage of hypericin . To ensure you are getting hyperforin, look for products explicitly standardized to Hyperforin . buy hyperforin
You can find standardized St. John's Wort with hyperforin at major health retailers like The Vitamin Shoppe or GNC . 3. Essential Buying Precautions buy hyperforin
and handled away from direct sunlight to prevent degradation. buy hyperforin
Because hyperforin is lipophilic (fat-soluble) and unstable, liquid-filled capsules or "softgels" are often preferred over dry tablets to maintain potency.