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.
BSN SYNTHA-6 is a multi-source protein powder designed to support muscle protein synthesis and recovery, with 22g of protein per serving and 48 servings per container.
For people fitting protein supplementation around training, meals, or snacks, SYNTHA-6 is formulated for flexible use throughout the day. It is designed to suit a range of active lifestyles and diet plans, whether used after a workout, between meals, as a snack, or as a treat. Its combination of protein, fiber, essential amino acids, and essential fatty acids makes it a multi-functional option within a nutrition or exercise regimen.
BSN SYNTHA-6 provides 22g of protein per serving from a blend of six sources. The matrix includes whey protein concentrate, whey protein isolate, calcium caseinate, micellar casein, milk protein isolate, and egg albumin. This blend combines whey, casein, other milk proteins, and egg albumin in one powder rather than relying on a single protein source.
BSN SYNTHA-6 is intended for use at different points in the day, including after exercise, between meals, or as a snack. Its stated purpose includes support for muscle protein synthesis and recovery, making it relevant to workout routines as well as everyday protein supplementation. Choose a time that fits your nutrition plan; the product is not limited to post-workout use.
BSN SYNTHA-6 combines protein with fiber, essential amino acids, and essential fatty acids. Its 6g of fiber per serving adds another nutritional component alongside the protein. Sugar varies by flavor, ranging from 2–3g per serving. BSN’s exclusive flavor technology supports the taste-focused formula; the brand identifies SYNTHA-6 as its best-tasting protein.
BSN SYNTHA-6 suits active adults who want a protein powder for workouts and other parts of the day, with protein and fiber in the same formula. Its multi-source protein blend, flexible timing, and 48-serving supply make it a fit for ongoing nutrition routines; it is intended as a supplement, not a meal-specific product.
Protein Matrix Comprised of (Whey Protein Concentrate, Calcium Caseinate, Hydrolyzed Whey Protein Concentrate, Whey Protein Isolate, Micellar Casein, Milk Protein Isolate), Polydextrose, Creamer (Sunflower Oil, Corn Syrup Solids, Sodium Caseinate, Mono- and Diglycerides, Dipotassium Phosphate, Tricalcium Phosphate, Soy Lecithin, Tocopherols), Natural and Artificial Flavor, Maltodextrin, MCT Powder (Medium Chain Triglycerides, Silicon Dioxide, Maltodextrin), Lecithin, Cellulose Gum, Salt, Sucralose, Acesulfame Potassium. CONTAINS: Milk and Soy.
Q: How much protein does BSN SYNTHA-6 provide per serving?
A: BSN SYNTHA-6 provides 22g of protein per serving from a matrix of whey, casein, other milk proteins, and egg albumin.
Q: When can I use BSN SYNTHA-6 protein powder?
A: BSN SYNTHA-6 is designed for use after a workout, between meals, or as a snack or treat at other times of day.
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!