Natural Cranberry Extract Vegetable Capsules By Solgar - 60 Count by Solgar. Save 16 Off!. $10.91. Solgar's Standardized Full Potency (SFP) Herbs are developed through a unique process that integrates the ideologies of both traditional herbalist and standardized herbal technology. .. Natural Cranberry with Vitamin C Vegetable Capsules is one of Solgar"s premium-quality herbal formulas.