Get 10% off with WELCOME10
Sign up for our emails and get 10% off your order with code WELCOME10 (one use per customer). We send marketing emails only to people who sign up, and every email includes a one-click unsubscribe link.
Free U.S. shipping on every order · Free 30-day returns · Real help by email





Orders are prepared in 1–3 business days and arrive 3–7 business days after they ship. Alaska, Hawaii, Puerto Rico, U.S. territories and APO/FPO/DPO addresses can take longer. You get a tracking number by email as soon as your order ships.
Free returns within 30 days of delivery: we email you a prepaid return label, no reason needed. Items must be unopened, with the manufacturer or tamper-evident seal intact, in their original packaging. Opened, used or partially consumed vitamins, minerals and supplements, items with broken or missing seals, and gift cards can't be returned. Damaged, defective, incorrect or expired items are always covered. Refunds go back to your original payment method within 10 business days of approval.
If you have a question about an item, its label or your order, email sales@naturalvitaminsonline.com with the product name or order number. We answer every message by email and reply within 1 business day (Monday to Friday, Eastern Time).
Talk to your doctor or pharmacist before starting a supplement, especially if you're pregnant or nursing, take medication, or have a medical condition.
†These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
Talk to your doctor or pharmacist before starting a supplement, especially if you're pregnant or nursing, take medication, or have a medical condition.
Irwin Naturals Testosterone UP RED with Nitric Oxide Booster is a men’s liquid soft-gel supplement designed to support testosterone levels already within the normal range and healthy circulation, with 60 softgels per bottle.
Testosterone UP RED is made for men looking to add targeted vitality and circulation support to an active lifestyle. Its formula brings together ingredients associated with male wellness and healthy blood flow in one liquid soft-gel supplement. It is designed to support testosterone within the normal range, not to claim an increase beyond that range.
It is formulated to support normal-range testosterone, daily male vitality, and performance as part of a healthy lifestyle. LJ100 Tongkat Ali and L-Citrulline form the featured two-ingredient combination, while Fenugreek and Asian Ginseng add further ingredients for stamina, energy, and overall men’s wellness.
L-Citrulline, Beet Root, Ginkgo, and Cayenne are included to support healthy blood flow and cardiovascular wellness. The formula connects circulation support with physical performance for active men, making it relevant to a broader daily vitality routine.
Each bottle contains 60 fast-releasing liquid soft-gels with BioPerine. Irwin Naturals uses an all-liquid soft-gel delivery format, positioned as an alternative to hard-to-digest tablets and capsules, and BioPerine is included to enhance nutrient absorption. The format is designed to fit into a daily men’s wellness routine. Irwin Naturals has been making health-focused supplements for 20 years.
Irwin Naturals Testosterone UP RED is best suited to men who want a single supplement formulated for normal-range testosterone, vitality, and healthy circulation as part of an active lifestyle. Its liquid soft-gel format brings the formula’s botanical ingredients and L-Citrulline together in a 60-softgel bottle.
Medium Chain Triglyceride (MCT) Oil; L-Citrulline; Fenugreek extract (4:1)(seed); Ginkgo (Ginkgo biloba) extract (leaf); Beet powder (root); LJ100® Tongkat Ali (Long Jack)(Eurycoma longifolia) extract (root); Cayenne powder (30,000 HU)(fruit); Beta Sitosterol; Asian Ginseng extract (4% ginsenosides, 0.8 mg)(root); BioPerine® Complex (Black Pepper extract (95% piperine)(fruit), Ginger extract (5% gingerols)(rhizome)). Other Ingredients: Gelatin, purified water, glycerin, soy lecithin, beeswax, sunflower oil, silicon dioxide, annatto (color) and maltodextrin.
Q: How many softgels are in Irwin Naturals Testosterone UP RED?
A: Irwin Naturals Testosterone UP RED contains 60 fast-releasing liquid soft-gels per bottle.
Q: What is Irwin Naturals Testosterone UP RED formulated to support?
A: Irwin Naturals Testosterone UP RED is formulated to support testosterone levels already within the normal range, male vitality, and healthy circulation.
Free standard shipping on every order to U.S. addresses, with no minimum. Orders are prepared in 1–3 business days and arrive 3–7 business days after they ship. Alaska, Hawaii, Puerto Rico, U.S. territories and APO/FPO/DPO addresses can take longer. You get a tracking number by email as soon as your order ships. See shipping details.
Free returns within 30 days of delivery. Free returns within 30 days of delivery: we email you a prepaid return label, no reason needed. Items must be unopened, with the manufacturer or tamper-evident seal intact, in their original packaging. Opened, used or partially consumed vitamins, minerals and supplements, items with broken or missing seals, and gift cards can't be returned. Damaged, defective, incorrect or expired items are always covered. Refunds go back to your original payment method within 10 business days of approval. See returns & refunds.
Damaged, defective, incorrect or expired item? Email your order number, a photo and the lot/expiration details to sales@naturalvitaminsonline.com and we will arrange a replacement or refund; this is always covered. Please report visible shipping damage within 7 days of delivery.
Sign up for our emails and get 10% off your order with code WELCOME10 (one use per customer). We send marketing emails only to people who sign up, and every email includes a one-click unsubscribe link.
Thanks for subscribing!
This email has been registered!