As people opt into GLP-1s for weight loss, there are some side effects they didn’t anticipate, one of them being moderate to rapid hair loss. Per previous HuffPost reporting, experts explain that the weight loss can stress the body out and cause it to deprioritize certain non-critical bodily functions, including hair growth. That said, folks experiencing this vouch for a liquid vitamin that reversed the shedding and thinning when nothing else worked. Recommended by thousands of reviewers and wellness experts alike, MaryRuth’s liquid multivitamin is dubbed “liquid magic” for a reason. People also say it has benefits beyond hair loss. And more great news: It’s on sale now for up to 40% off — dropping its lowest price to under $20 at Amazon!

No, you’re not imagining things. MaryRuth’s now makes the beloved multivitamin in smaller bottles, so you can get an 8-pack for under $20 right this second if you’re fast enough on the deal.

Of course, technically, it’s not “magic,” but it sure isn’t your everyday biotin supplement either.

Quick refresher: Biotin is a B vitamin often linked to hair, skin and nail growth and overall health. Another B vitamin, Folate, helps your body make new cells, which can also aid in hair, skin and nail health. (It’s also often recommended for pregnant people or people after menopause.)

MaryRuth’s superstar roster includes those more popular names, as well as vitamin D3 and vitamin C. However, if you read the label further, you’ll see more names like biotin magnesium biotinate and calcium L-5-methyltetrahydrofolate — forms of biotin and folate that have been found to be more easily absorbed by the body. Translation: This mixture may help your body really soak up the good stuff fast.

Lustriva is another powerful name in the mix, a proprietary, patented blend of biotin and silicon (“inositol-stabilized arginine silicate”) to help enhance blood flow and circulation and boost nitric oxide which helps your body absorb even more nutrients than with just biotin alone.

Reviewers swear this powerful liquid vitamin does for their hair what nothing else that they’ve tried could.

As several shoppers shared, hair loss can occur for various reasons and depending on the cause, your age, genetics and other factors — it can be really difficult to grow it back. That said, so many reviewers call this strong vitamin blend “the only thing” that’s given them consistent results, making their hair feel fuller, grow longer and thicker, stopping major hair loss, soothing hair from bleach damage and even helping their edges regrow.

“I was talking GLP-1 medication and my hair started shedding in huge clumps,” one reviewer Tiffany shared. “I cannot get over the difference in the amount of hair I was shedding two weeks ago to right now. Huge difference,” she continued. “I’m so thankful and it’s way cheaper than most products I have tried. AND it’s actually working!!”

Another user who was taking the Zepbound medicine specifically noted their hair “falling out in fistfuls” while inching closer to their wedding day. After trying MaryRuth’s liquid vitamin, they’re reporting “fuller and stronger” strands.

Beyond the raving reviewers, several HuffPost editors have tried this liquid multi-vitamin consistently and seen real results.

"I keep it in the medicine cabinet in my bathroom and take the recommended doses every single day." — Quay Battle, HuffPost Shopping Managing Editor

Marquaysa Battle, HuffPost Shopping

“I keep it in the medicine cabinet in my bathroom and take the recommended doses every single day.” — Quay Battle, HuffPost Shopping Managing Editor

HuffPost has real shopping experts here who actually try a lot of what we recommend. Wellness editor Lindsay Holmes first highly recommended this product to our team. After noticing Holmes’ “lustrous” hair, HuffPost Head of Life and Commerce, Kristen Aiken tried the liquid vitamin, too, and also reports impressive results. After learning about the liquid vitamin from Kristen, I also bought a bottle with all the skepticism in the world. Currently on my third bottle, I’m really noticing my hair getting stronger and looking less dull.

Of course, in this economy, products that do more than one thing will always be most esteemed. So yes, our HuffPost Shopping experts and reviewers alike really love that it’s not just for hair.

“I can already see a huge difference in my nail growth after just a few weeks,” Aiken shared, noting that because it “actually tastes good,” she also looks forward to taking it every day.

Alternatively, I don’t think it tastes great per sé, but it’s not cough medicine disgusting. I can take the two tablespoons without a juice chaser. Plus, my nails are growing faster than I’ve ever seen them. Even my nail tech commented on them at my last appointment.

Reviewers also say this blend has helped “fade wrinkles,” improve the look of their skin and strengthen and lengthen their nails. “Not only is my hair health through the roof – my nails and eyelashes are longer/stronger and I feel healthier overall,” one wrote. “My face has this new glow I haven’t had before,” another said. “My wrinkles have also diminished, which makes me look at least 5-6 yrs younger!”

Many reviewers with PCOS recommend the blend, with some noting they believe it’s helped them have more regular menstrual cycles. Additionally, users going through menopause, chemotherapy, age-related hormone and weight changes report positive results from taking the vitamin mix regularly.

“Something finally worked,” reviewer Mrs. Cheree wrote. “My hair is much thicker and growing so much. I had a hormonal imbalance and my hair would not grow. This is a God given product.”

Want to know more? Check out these 5-star reviews of MaryRuth’s Liquid Hair Growth Multivitamin and grab a bottle before it goes back to full price again.

“I don’t normally write Amazon reviews, but I felt after a month of using this product that I needed to tell others about it. I have been on a GLP-1 for quite some time now and one of these things I noticed when using it was hair loss. I freaked out when I saw a picture of myself and noticed how much hair I had missing from my scalp! I have always had thick hair and so I panicked and searched for a product that could help. I came across this one with great reviews after a month I have noticed hair growth and nail growth.. I have so many baby hairs now it reminds me of the hair growth that happened postpartum! If you are in need of a good hair/nail supplement, I highly recommend this one. I will be back to review in a few months to update you all!!” — Stephanie Lokey

“This product helped with my hair shedding! I bought this product on a hope, like I have multiple other products! Crossing my fingers hoping it would work. I have spent hundreds on scientifically proven hair supplements. Top names and all. I could not afford it. I was talking GLP-1 medication and my hair started shedding in huge clumps. I was going to wait a whole month before making a comment. I have never took the time to write a review, but I cannot get over the difference in the amount of hair I was shedding two weeks ago to right now. Huge difference. My hope is if you’re reading these comments, are struggling with hair loss. Stressing about losing all your hair. Give this product a try. Im so thankful and it’s way cheaper than most products I have tried. AND it’s actually working!!” — Tiffany

“Prior to purchase I (too) read a ton of reviews. At first I was very hesitate in purchasing; I was worried I’d fallen for another influencer dupe to purchase something that doesn’t really help my specific needs… This stuff is life changing! I’ve always battled sensitivity to products (stomach backlash) and have battled thin hair my whole life so I started lightly once I received this in the mail. The bottle is much bigger than I had anticipated and the taste was surprisingly good. The flavor is mango and does not leave a weird after taste…

I would highly recommend this for anyone who also battles thin, fine hair, especially those who battle hair loss. My hair stylist who has been cutting and coloring my hair for a decade has even commented on the difference my hair quality has been.

I don’t have enough room to state how incredible this product is and I hope you take the plunge too. My only complaint is the price point, but you get what you pay for— and you get quality AND quantity with this one!” — Emily

“I truly never write reviews but i had to for this product. my hair was falling out in fist fulls from the weight loss on zepbound. my wedding is coming up and i was so nervous i was going to know no hair! this product totally transformed my hair. it’s fuller and stronger and the strands feel thicker. i don’t love the taste but that is just a personal preference i think. if you are looking for something to help with hair loss due to weight loss or even stress this should be your first choice” — Amazon Customer

“I take this every morning. I have been on Zepbound for almost a year now and this has helped keep my hair. I know so many people on the shot that have lost a lot of hair and I’m not going to lie, I was dreading that. I didn’t have along of hair to begin with. Just taking this has definitely kept my fallout down. I would definitely recommend.” — Samantha

“On monthly subscription for over a year. I have to take vitamins consistently for the rest of my life because of the weight loss surgery. Nutrient deficiency causes hair loss and so does menopause. All of my blood work is excellent because of this and my hair is back to normal.” — D Watson

The Real Deal: We use deal trackers and commerce experience to sift through “fake” hike-and-drop deals and other deceptive sales tactics. Products will usually be rated at least 4 stars with a minimum 15% discount. (And when there’s an exception, we’ll tell you why.)