Harry G. Preuss

Publications14
h-index3
Citations159
Highly Influential Citations10
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The Safety of Citrus aurantium (Bitter Orange) and its Primary Protoalkaloid p‐Synephrine
Citrus aurantium (bitter orange) extract and its principal protoalkaloidal constituent p‐synephrine are widely used in weight loss and weight management as well as in sports performance products.… Expand
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A 60day double-blind, placebo-controlled safety study involving Citrus aurantium (bitter orange) extract.
Bitter orange (Citrus aurantium) extract and its primary protoalkaloid p-synephrine are widely consumed in dietary supplements for weight management and sports performance. p-Synephrine is also… Expand
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Stereochemical and pharmacological differences between naturally occurring p-synephrine and synthetic p-synephrine
p-Synephrine, the primary protoalkaloid in Citrus aurantium (bitter orange) and some other Citrus species, exists in nature in the l- or [R-(−)]-enantiomeric form, whereas synthetic p-synephrine is a… Expand
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Safety and Efficacy of Banaba–Moringa oleifera–Green Coffee Bean Extracts and Vitamin D3 in a Sustained Release Weight Management Supplement
This 60‐day, 30‐subject pilot study examined a novel combination of ingredients in a unique sustained release (Carbopol matrix) tablet consumed twice daily. The product was composed of extracts of… Expand
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Issues regarding a FACT review paper on the efficacy of herbal supplements containing Citrus aurantium and synephrine alkaloids for the management of overweight and obesity
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Issues Associated With the Case Report Entitled “Hypertensive Urgency Associated With Xenadrine EFX Use”
A number of issues exist with respect to the case study entitled ‘‘Hypertensive urgency associated with Xenadrine EFX use’’ by Moaddeb et al (J Pharm Pract. June 2011. doi:10:1177/ 0897190011406127).… Expand
Linking fasting blood glucose quartiles of nondiabetic volunteers ages 21–84 years to metabolic syndrome components: focusing on the aging paradox
Abstract Background: In recent, limited-in-size, cross-sectional studies employing nondiabetic subjects, fasting blood glucose (FBG) levels were used to estimate status of insulin resistance (IR) and… Expand
Opinion Paper: Using a Body Composition Improvement Index (BCI) to Improve the Assessment of Nutritional Interventions
Flower Pollen Extract and its Effect on the Prostate Randomized Trial of a Combination of Natural Products ( Cernitin , Saw Palmetto , B-Sitosterol , Vitamin E ) on Symptoms of Benign Prostatic…
Because benign prostatic hyperplasia (BPH) is relatively common, it is important to discover safe and effective means to treat this often debilitating perturbation. Accordingly, we examined the… Expand
when non significant results can mask significant results a procedure for using dose related analyses
Background: Non-significant within-group and between-group comparisons of baseline-ending changes in clinical trials and pilot studies can mask positive changes if dose-related compliance procedures… Expand