THORNE L-Arginine, Sustained Release Formula, 120 Capsules
- Circulation Support: Benefits heart health, collagen formation, and more by helping relax the arteries and regulate blood flow to the extremities and throughout the body*
- Sustained-Release Formula: Maintains optimal levels of arginine over 24 hours when taken twice daily as suggested
- Athletic Performance: Enhances muscle capacity and output during exercise and helps promote cellular repair*
- Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
- Trusted: Thorne is trusted by 100+ professional sports teams and the #1 most recommended clinical brand by consumers and health-care practitioners (Based on a 2026 independent survey of US supplement consumers and health-care practitioners)
Specifications
- Product Dimensions: 2.58 x 2.58 x 4.94 inches; 5 ounces
Size chart
| Size | S | M | L | XL | 2XL | 3XL |
|---|---|---|---|---|---|---|
| Tee — chest width (in) | 18 | 20 | 22 | 24 | 26 | 28 |
| Tee — body length (in) | 28 | 29 | 30 | 31 | 32 | 33 |
| Fits chest (in) | 34–36 | 38–40 | 42–44 | 46–48 | 50–52 | 54–56 |
Shipping, returns & fit
Shipping is free on U.S. orders of $75 or more; orders under $75 ship for a flat $6.95. We ship to U.S. addresses only.
Every piece is printed to order, so allow 1–3 business days for production and packing. Once shipped, delivery normally takes another 3–8 business days, with a tracking link emailed to you. Full details in our Shipping Policy.
You have 30 days from delivery to return any unworn, unwashed item with tags attached. Return postage is paid by the buyer, unless your item arrived damaged, wrong, or never arrived — in those cases we replace it or refund you in full and cover the postage. No restocking fees.
Approved refunds go back to your original payment method within 5–10 business days. See the full Refund Policy.
Unisex relaxed fit, sizes S to 3XL. True to size for a relaxed look; go one size up for the oversized, boxy 90s look.
Heavyweight 100% cotton, garment dyed and preshrunk. Wash cold inside out, tumble dry low. Every blank is dyed in batches, so the exact shade of wash varies slightly piece to piece — that is the vintage look, not a defect.
Email support@70srockshop.com or use our contact form. A real person in Union, Ohio reads every message, Mon–Fri, 9 AM – 5 PM ET — usually answered within one business day.