Health Deals Radar — May 20, 2026
Today's top urgency item is iHerb code MAY26SW — it expires at 10 a.m. PT today. After it closes, US shoppers have two carry-forward codes through May 30: MAYWELLNESS (22% off $60+) and MBDAILY (20% off, no minimum). Amazon surfaces three strong supplement deals — Orgain Organic Protein at 50–65% off, MaryRuth's Organics up to 70% off, and Lunakai Magnesium Glycinate at ~$9.96 for 90-count. Costco's May coupon book adds three new health items through June 7. MyProtein's 35% off Memorial Day sale starts May 22.
MAY26SW expires at 10 a.m. PT today. If you have an iHerb order waiting, that's your hard deadline. After it goes, two US-only codes with more runway take over. Elsewhere: Amazon surfaced three strong supplement deals this week, and Costco's May coupon book added three health-adjacent finds that weren't on the radar yesterday.
Quick-scan summary
| Retailer | Deal | Discount | Expires |
|---|---|---|---|
| iHerb (worldwide) | Code MAY26SW — $60+ orders | 15% off $60+ / 20% off $100+ | Today, May 20 — 10 a.m. PT |
| iHerb (USA only) | Code MAYWELLNESS — $60+ orders | 22% off | May 30 |
| iHerb (USA only) | Code MBDAILY — any order, no minimum | 20% off | May 30 (one-time use) |
| iHerb (USA only) | Code 22WELLNESS22 — $60+ orders | 22% off | Unspecified |
| Vitacost | Code SELECTBRON — Dr. Bronner's | 20% off | May 25, 7 a.m. ET |
| Amazon | Orgain Organic Protein (multiple products) | 50–65% off | While active |
| Amazon | MaryRuth's Organics vitamins + supplements | Up to 70% off (code MROPHILSMY) | While active |
| Amazon | Lunakai Magnesium Glycinate 90-ct | ~50% off → $9.96 | While active |
| Amazon | YOSUDA Magnetic Rowing Machine | 20% off → $189.99 | While stock lasts |
| Costco | Ensure Original Nutrition Shake | $8.50 off → $28.99 | June 7 |
| Costco | Orgain Collagen Peptides + Probiotics | $6 off → $23.99 | June 7 |
| Costco | Nature Valley Chewy Protein Bars, 30-ct | $5 off | June 7 |
| Costco | Oikos Triple Zero Greek Yogurt, 18-ct | $4.50 off | June 7 |
| Costco | Once Upon a Farm Organic Immunity Blends, 12-pk | $6 off | June 7 |
| Costco | Biena Crispy Roasted Edamame, 18 oz | $2.30 off | June 7 |
iHerb — MAY26SW expires today
Code MAY26SW: final window (expires May 20, 10 a.m. PT)
MAY26SW — iHerb's (a global online supplement and natural products retailer) strongest worldwide-eligible code this month — cuts off at 10:00 a.m. Pacific Time today. 1 Multiple independent Reddit threads, including a timed entry from timezone-tracking bot u/timee_bot, confirmed the cutoff. 2
- Orders $60–$99: 15% off
- Orders $100+: 20% off
- Valid in most countries worldwide; up to 2 uses per account
iHerb — codes that carry through May 30
Once MAY26SW closes, three US-only codes take over. They run through the rest of the month and offer comparable or better savings for most cart sizes.
Choosing between the three US codes
| Code | Discount | Minimum | Uses | Valid |
|---|---|---|---|---|
| MAYWELLNESS | 22% off | $60 | 2 per account | Through May 30 |
| MBDAILY | 20% off | None | 1 per account | Through May 30 |
| 22WELLNESS22 | 22% off | $60 | 2 per account | Unspecified* |
*22WELLNESS22 was confirmed in early May by u/honeyjalapenos (r/iherbcodeshare) but has not been independently re-verified since May 17. Check at checkout before relying on it. 3
MAYWELLNESS is the top carry-forward pick for carts over $60: at 22% off, it edges out both MAY26SW and MBDAILY for mid-to-large orders. 45
MBDAILY is the better choice for smaller orders: 20% off with no $60 floor — the only current iHerb US code that works on any cart size. Use it once; it's a one-time code. 3
iHerb code stacking tip
iHerb supports two codes at checkout: a referral code (entered first in the referral field) stacks on top of a promo code. Verified referral codes active as of May 20:
- DVO4205 — long-standing pick, recommended by u/honeyjalapenos 3
- KOD6351 — posted May 20 by u/beachbow; claimed to stack with MAYWELLNESS for 22% off + free shipping 4
- DQL3272 — used by u/Horror_Shirt5260 in the May 19–20 MAY26SW posts 2
Referral codes typically return 5–10% as account credit applied to a future order, not an immediate cart reduction.
Vitacost — SELECTBRON through May 25
SELECTBRON saves 20% on all Dr. Bronner's products at Vitacost (a Kroger-owned online natural products retailer) through May 25 at 7:00 a.m. ET. 6 Vitacost's own product page shows the banner: "Save 20% off Code SELECTBRON Ends: 5/25/26 at 7:00 a.m. ET. Guaranteed." Dr. Bronner's (a certified-organic personal care brand known for its multi-use castile soaps and body care products) is a solid discount target: larger bottles tend to last months, so a 20% break on a bulk restock makes sense before the window closes.
Amazon — supplement deals this week
Three supplement deals confirmed active on Amazon as of May 20. Historical-low context is only available where CamelCamelCamel data was obtained.
Orgain Organic Protein — 50–65% off across multiple products
Orgain (the #1-selling vegan protein powder brand in the US) has a range of products marked down 50–65% off on Amazon this week. Confirmed prices: the 1 lb protein powder runs $6.50–$7.50 (regular ~$15–$20), and the 2 lb Organic Vegan Protein Powder is $13.49 (regular $33.00). 7 Promo code 25ORGAIN adds an additional 25% off and is reported to stack on some products. The deal surfaced via Harris Teeter's Facebook post and multiple deal-focused Instagram accounts; exact expiry is not specified by any source.
MaryRuth's Organics — up to 70% off with code MROPHILSMY
MaryRuth's Organics (a vegan, non-GMO supplement brand covering gummies, liquid drops, and probiotics) has 14+ products discounted up to 70% on Amazon with promo code MROPHILSMY. Prices listed below include a 10% Subscribe & Save rate: 8
| Product | Sale price (10% S&S) | Regular price | Discount |
|---|---|---|---|
| Kids Elderberry Syrup, 1 fl oz | $9.78 | $19.95 | 51% off |
| Men's Vitamin Gummies | $11.84 | $29.95 | 60% off |
| Liquid Multivitamin + Hair Growth | $19.56 | $39.95 | 51% off |
| 3-in-1 Probiotics | $19.88 | $44.95 | 56% off |
| Liquid Morning Multivitamin (Women/Men/Kids) | $22.38 | $51.69 | 57% off |
Note: MROPHILSMY cannot be stacked with other select product offers. Switching from 10% to 15% Subscribe & Save drops each price by roughly another $1. 8
Lunakai Magnesium Glycinate 90-count — $9.96 shipped
Lunakai Magnesium Glycinate (a US-made, non-GMO vegan supplement delivering 120 mg elemental magnesium per capsule plus Vitamin B6 as P-5-P, 90-count; ASIN B0GMK73Y7Q) drops to $9.96 shipped after stacking a 40% off digital coupon (clip it on the product page) with 10% Subscribe & Save. 9 Regular price is $19.91 — the stacked discount works out to about 50% off. With 15% Subscribe & Save instead, the price drops further to approximately $8.96 (~55% off). Coupon availability can change at any time; verify the clip coupon is still active before ordering.
Amazon Memorial Day protein sale — up to 40% off
Amazon's official account announced a Memorial Day Sale on protein products on May 19, describing discounts of up to 40% across multiple brands. 10 Price tracking via PricePlow confirms Optimum Nutrition Gold Standard Whey has seen recent minor drops: the Cinnamon Roll 1 lb variant fell 10% to $19.14 (May 17), with the 5 lb variant also dropping May 18. 11 These individual drops are modest, but the Memorial Day window runs through May 25 — worth checking Amazon's protein category if you're stocking up on a specific brand.
YOSUDA Magnetic Rowing Machine — $189.99 (20% off, ~$10 above all-time low)
The YOSUDA Magnetic Rowing Machine (model US-181; 16 magnetic resistance levels, Bluetooth app support, LCD monitor; load capacity 350 lbs; height range 4'5"–6'2") is listed at $189.99 on Amazon via a third-party seller — Amazon's direct stock is out. 12 That's 20% off the regular $237.99, saving $48.00.
Historical context: CamelCamelCamel records the all-time low at $179.97 (March 25, 2026), putting today's price about $10 above the ATL. 13 A used unit from a third-party seller is available at $180.49 — roughly at the ATL price — for buyers willing to trade warranty coverage. This deal appeared in r/AmazonofDeals on both May 19 and May 20 without a price change, suggesting it has been stable for at least 48 hours.
Costco — May coupon book (through June 7)
The May 2026 Costco Instant Savings Book (valid May 11–June 7) has six confirmed health and health-adjacent deals, three of which are new finds since yesterday's radar. All discounts apply automatically for Costco members at checkout — no code entry needed. 1415
| Product | Regular price | Savings | Sale price | Protein / notes |
|---|---|---|---|---|
| Ensure Original Nutrition Shake | $37.49 | $8.50 off | $28.99 | Ready-to-drink nutritional shake |
| Orgain Collagen Peptides + Probiotics | $29.99 | $6 off | $23.99 | Collagen + probiotic blend |
| Nature Valley Chewy Protein Bars, 30-ct (PB Dark Choc) | Not disclosed | $5 off | — | 10g protein/bar, gluten-free |
| Oikos Triple Zero Greek Yogurt, 18 cups | Not disclosed | $4.50 off | — | 15g protein/cup, zero fat, no added sugar |
| Once Upon a Farm Organic Immunity Blends, 12-pk | Not disclosed | $6 off | — | With probiotics, no added sugar |
| Biena Crispy Roasted Edamame, 18 oz (Himalayan Pink Salt) | Not disclosed | $2.30 off | — | 13g plant protein/serving, gluten-free |
Three new entries vs. yesterday: Oikos Triple Zero, Once Upon a Farm Immunity Blends, and Biena Edamame. The Oikos deal is particularly straightforward for high-protein snacking: 15g protein per 5.3 oz cup, zero fat, no added sugar, and 18 cups per Costco pack. 1415
One item to watch: Kirkland Signature Whey Protein Creamy Chocolate 5.4 lb (Item 1780375) is currently showing as "inactive" across most US warehouses — not yet marked as deleted, per r/Costco moderator u/CookieButterLovers, but out of stock or in low supply. 16 Check your local warehouse before making a trip specifically for this item.
Coming May 22: MyProtein Memorial Day sale
MyProtein (a UK-based sports nutrition brand, No. 1 online sports nutrition brand by sales according to its own marketing, owned by The Hut Group) has a 35% off sitewide Memorial Day sale starting May 22 — two days from today. 1718 The confirmation comes from multiple coupon aggregators and Instagram influencer posts, not a direct official announcement from MyProtein — as of May 20, us.myprotein.com shows no Memorial Day banner yet.
Expected coverage includes Impact Whey Protein, Clear Whey Isolate, Creatine Monohydrate, pre-workout, vitamins, and activewear. Some coupon aggregators list higher potential stacking discounts (up to 50–80% via specific codes), but these figures come from aggregator estimates, not verified order tests. Check MyProtein's site on May 22 to confirm the sale is live before ordering.
Alani Nu Protein Bars — $11.40 for 12-ct at Amazon (42% off)
Staff-posted deal on Slickdeals: 12-count Alani Nu Protein Bars (Peanut Butter & Jelly, 15g protein per bar, 220 calories, "NEW & IMPROVED" formula) via Subscribe & Save at $11.40 — down from a regular $19.00 (42% off). 19 The deal went live May 18 and was still showing active as of May 20. A previous Slickdeals frontpage deal for the same product had it at $13; today's $11.40 Subscribe & Save price (base sale price $12.00 minus 5% S&S) is lower than that prior frontpage. Free shipping with Prime or orders $35+.
Cover image generated by AI.
References
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- 11PricePlow — Whey Protein price tracker
priceplow.com
- 12
- 13CamelCamelCamel — YOSUDA Rowing Machine price tracker
camelcamelcamel.com
- 14Costco Insider — Costco May 2026 Coupon Book
costcoinsider.com
- 15EatingWell — The 9 Best Deals at Costco in May 2026
eatingwell.com
- 16
- 17
- 18Coupon Cabin — Myprotein Coupons for May 2026: 35% Off
couponcabin.com
- 19
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