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| Brand name | Ingredients | Cost | Availability | Effects/declared advantages from anecdotal online reports | Side effects/disadvantages from anecdotal online reports |
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| Endowmax http://www.endowmax.com/ | Epimedium grandiflorum (horny goat weed); maca; damiana; L-arginine; Tribulus terrestris; gamma-aminobutyric acid; jujube dates extracts; Muira puama (potency woods); Catuaba bark; Xanthoparmelia scabrosa; Cnidium monnieri; Tongkat Ali (Eurycoma longifolia) | 59.95 $ per box; six-month supply for 239.95 $ | Online suppliers (orders can be placed by fax and phone); Ebay; Amazon (currently out of stock). | Powerful and natural; no unpleasant side effects; customers testimonials; money back guarantee; it is clearly stated the product does not contain Yohimbe. | Up to 8 weeks for initial benefits; expensive. |
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| Xytomax http://www.xytomax.com/ | Niacinamide (vitamin B3); zinc oxide; Epimedium sagittatum (standardized to 10% icariin); maca root; Guarana extract (standardized to 20% caffeine); Korean ginseng root; L-arginine; Muira puama; Longjack extract; Avena sativa; Yohimbe bark extract (2% yohimbine); Ginkgo biloba extract (24% flavonglycodises & 6% terpene lactones); saw palmetto (berry); Xanthoparmelia Scabrosa; Cnidium monnieri extract; GABA; damiana (leaf) | 69.96 $ per box; six-month supply for 309.95 $ | Online suppliers (orders can be placed by fax and phone); Ebay. | Natural; working from the very first dose; customers testimonials; money back guarantee. | It is not to be used in case of thyroid, kidney, or heart diseases or high blood pressure; more expensive than other products. |
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| Xanogen http://www.xanogen.com/ | Epimedium grandiflorum (horny goat weed); maca; Yohimbe; L-arginine; Tribulus terrestris; gamma-aminobutyric acid; Muira puama (potency woods); Catuaba bark; Xanthoparmelia scabrosa; Cnidium Monnieri | 89.95 $ per box; six-month supply for 419.95 $ | Online suppliers (orders can be placed by fax and phone); Ebay; Amazon (currently out of stock). | 100% natural products; money back guarantee; no negative side effects; permanent effects on corpora cavernosa. | It could cause stomach upset if not taken with food; it does not provide immediate erections but stronger ones. |
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| Virility EX http://www.virilityex.it/ | Yohimbe; maca; Elk Antler Velvet; Eleuthero; Longjack; Muira puama (potency woods); Catuaba bark; oat straws. | 29.89 € per box; six-month supply for 89.74 € | Online suppliers (orders can be placed by fax and phone); Ebay; Amazon (currently unavailable). | Stated as: “No side effects; 100% natural; money back guarantee.” | Some users claim no results with this product; just a couple of customer testimonials were found on official websites with no FAQ sections. |
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| Enzyte http://www.enzyte.com/ | Korean red ginseng; Gingko biloba; grape seed extract; horny goat weed; Muira puama; niacin; zinc. | 39.95 $ per box; six-month supply for 179 $ | Online suppliers; Ebay; Amazon. | Premium natural ingredients; no gluten, no preservatives, no ephedra, no caffeine, no Yohimbe. | Reported hives, facial flushing, insomnia, and internal bleeding; some users claim no results with this product. |
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| Extagen http://www.extagen.com/ | Not clearly listed on website, just “herbs and phytonutrients.” | 59 $ per box; six-month supply for 198 $; twelve-month supply for 288 $ | Online suppliers (orders can be placed by phone, and mail too); Ebay; Amazon. | Natural, vegetarian and hypoallergenic; money back guarantee; it is clearly stated the product does not contain Yohimbe; customers testimonials. | Contraindicated in case of high blood pressure or other medical conditions. |
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| Extenze http://www.extenze.net | L-Arginine; Eleutherococcus; Yohimbe bark extract; nettle; ginseng; folate; micronized DHEA; Muira puama; pregnenolone; zinc; black pepper; Piper longum; ginger. Cnidium monnieri; Astragalus: Xanthoparmelia Scabrosa; boron; GABA; velvet deer antler; horny goat weed; damiana; pumpkin; licorice extract; Ho Shou Wu extract. | 59.95 $ per box; six-month supply for 305.95 $; ten-month supply for 499.95 $ | Online suppliers (orders can be placed by fax, phone, and mail too); Ebay. | Stated as: “all natural; assures penis enlargement in addition to increasing sexual stamina; customers testimonials; money back guarantee.” | Legal controversies; reported increased heart rates, agitation, and nervousness. |
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| Maxidus http://www.maxidus-pill.com/ | Eurycoma longifolia; Flos catharmi; Rizoma Curcumae longae; Gingko biloba; Herba Epimedii; Herba Cistanches; Astragalus membranaceus; Momordica charantia L (Ku Gua). | 39.95 $ per box; six-month supply for 399.75 $; twelve-month supply for 479.40 $ | Online suppliers (orders can be placed by fax, phone, and mail too); Ebay. | Stated as: “works in 10–30 minutes and lasts for up to 4 days; money back guarantee; 100% natural; it can be taken by people with heart or prostate problems, hypertension, diabetes; it can be used by women too.” | Slight headache reported; expensive; clinical tests carried out are shown for only one ingredient (Eurycoma longifolia). |
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| Orexis http://www.orexis-pills.co.uk | Tribulus terrestris; Epimedium sagittatum; Muira puama; Panax ginseng; Catuaba bark extract; damiana; Yohimbe extract. | 29.16 £ per box; six-month supply for 135.00 £; twelve-month supply for 262.50 £ | Online suppliers (orders can be placed by fax, phone, and mail too); Ebay. | Stated as: “all natural; works within 45 minutes; customers testimonials; money back guarantee.” | Legal issues; interaction with antidepressants, diuretics, and high blood pressure medications. |
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| Pro Solution Pills http://www.prosolutionpills.com/ | Solidilin; Korean ginseng; Butea superba; Momordica; apigenin; Amla; Arjuna; Cordyceps; zinc oxide: reishi mushroom; Curculigo; drilizen; bladderwrack. | 59.95 $ per box; six-month supply for 289.95 $; twelve-month supply for 399.95 $ | Online suppliers (orders can be placed by fax, phone, and mail); Ebay; Amazon. | Stated as “all natural; no side effects; multiple orgasms per sexual encounter; customers testimonials; money back guarantee.” | Reported nausea, hypertension; increased heart rate, dizziness; it needs 5-6 months before the user notices the desired results. |
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| Provigro http://www.provigro.com | Horny goat weed; maca root; saw palmetto; Tongkat Ali; Mucuna pruriens 10% L-dopa; Muira puama; L-arginine; Panax ginseng. | 34.97 $ per box; three-month supply for 57.80 $ | Online suppliers (orders can be placed by fax, phone, and mail). | Stated as “natural vitamins, minerals and herbs”; customers testimonials; money back guarantee; it does not contain Yohimbe. | Reported nausea, dizziness, and vomiting; it may take up to six months to work. |
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| Quantum Pills http://www.quantumpills.com | L-arginine; L-lysine HCL; maca root; Muira puama; Swedish flower pollen extract; horny goat weed; Catuaba bark; Gingko biloba; zinc oxide. | 44.95 $ per box; six-month supply for 189.95 $ | Online suppliers (orders can be placed by fax, phone, and mail too). | Stated as a “climax enhancer,” assures increase in ejaculation volume; natural; money back guarantee; customers testimonials. | No permanent results; no scientific proofs and no adequate ingredients explanation. |
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| Sinrex http://www.sinrex.com | Bioperine; copper chelate; creatine; Cuscuta seed; Gingko biloba; green tea extract; Hawthorn berries; Epunedum Sagitum; inosine; L-arginine; maca; omega 3; saw palmetto; Siberian ginseng; soy proteins; Tribulus terrestris; vitamin E. | 39.95 $ per box; six-month supply for 199.95 $ | Online suppliers (orders can be placed by fax, phone, and mail too); Ebay. | Presented as “all natural; money back guarantee; customers testimonials; semen volume and orgasm intensifier.” | At least one month for initial results; possible allergies to ingredients. |
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| Sizepro http://www.sizepro.com | Vitamin E; vitamin B3; horny goat weed; hawthorn berry; damiana; Muira puama; Gingko biloba; Chinese ginseng; Tribulus fruit extract; Catuaba bark; saw palmetto; inosine; L-arginine; oat straw; cayenne fruit; soy protein. | Two-month supply for 99.95 $; six-month supply for 245.95 $ | Online suppliers (orders can be placed by fax, phone, and mail too); Ebay. | Natural; “Lasting increase of penis thickness and size; money back guarantee; customers testimonials.” | |
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| Vazomyne http://www.vazomyne.net | Not completely listed. Vazomyne includes L-arginine, saw palmetto, Gingko biloba, damiana, Polygonum multiflorum, nettle leaf, Muira puama. | 39.99 $ per box; three-month supply for 99.98 $ | Online suppliers (orders can be placed by fax, phone, and mail too); Ebay.; Amazon (currently not available). | Presented as: “natural; money back guarantee; customers testimonials.” | Ingredients are not fully listed nor explained in details; “It should not be taken in case of heart or thyroid problems; will not increase penis size.” |
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