GLP-1 and Your Hair, Skin and Nails: How Omega-3 Can Help

If you’re taking Ozempic, Wegovy, Mounjaro or another GLP-1 medication, you might have noticed a few things no one warned you about. More hair coming out in the shower. Skin that suddenly feels dry or thin. Nails that snap, split or just stop growing the way they used to.

You’re not imagining it, and you’re definitely not the only one. It’s also not really the medication’s fault. GLP-1s don’t attack your hair or your skin directly. What they do is help you lose weight quickly and eat much less along the way - and that puts stress on your whole body. When you’re eating less, your hair, skin and nails are often the first to show it.

The good news: there are simple things you can do to support your body through it. Omega-3 is one of the most useful, because it works on all three areas at once. Here’s what’s actually going on, and how omega-3 fits in.

The short answer

GLP-1 medications can cause hair shedding, dry skin and brittle nails - not directly, but because of the rapid weight loss and the smaller meals that come with them. Your body is missing some of the nutrients it normally uses to keep these tissues healthy. Omega-3 fatty acids (the kind found in algae and fish oil) help in three ways: they support your skin barrier, calm the inflammation that drives hair shedding, and provide the healthy fats your nails need to grow strong.

What GLP-1s are actually doing to your hair, skin and nails

GLP-1 medications like semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) work by slowing down digestion and reducing your appetite. They’re effective for weight loss and blood sugar control. But because you’re eating less, your body has less of everything to work with - protein, healthy fats, vitamins, minerals - and that shows up in the places that need a steady supply: your hair, skin and nails.

Why your hair is shedding

It’s called telogen effluvium, and it’s a fancy name for stress-related hair shedding. Normally, about 10% of your hair is in a “resting” phase. When your body goes through something stressful — like fast weight loss — a lot more hair gets pushed into resting, and then falls out a few months later.

Cleveland Clinic dermatologists estimate that 25–33% of people on GLP-1s experience some hair shedding. Wegovy’s own trials reported it in 3% of adults compared with 1% on placebo. The important part: this is almost always temporary. Your hair hasn’t fallen out for good, it’s just paused. Once your body gets what it needs, it grows back.

Why your skin feels different

You’ve probably heard of “Ozempic face” - that’s really about losing fat under the skin, not the skin itself. The more common issue we hear about is the change in how your skin feels day to day: drier, tighter, more reactive to products that used to be fine, sometimes a bit dull.

This usually comes down to your skin barrier. Your skin needs healthy fats to stay strong and hold moisture. When you’re eating less, especially less healthy fat, the barrier weakens and that’s when the dryness and sensitivity show up.

Why your nails are brittle

Nails are made from keratin, the same protein family as hair. They respond to stress and nutrition shortages in the same way, just more slowly. If you’re eating significantly less than you used to, brittle, peeling nails are a really common follow-on effect.

Why omega-3 is one of the best supplements for this

Most articles about GLP-1 supplements list the usual suspects: protein, multivitamin, vitamin D, magnesium. All sensible. But omega-3 deserves its own spotlight, because it works on the exact three areas under pressure: hair, skin and nails.

It supports your skin barrier

Omega-3 fats (specifically EPA and DHA) are part of the structure of your skin itself. They sit in the spaces between your skin cells, holding moisture in and keeping irritants out. When your diet runs low on healthy fats which can easily happen when you’re eating less overall - the barrier gets weaker. Omega-3 helps rebuild it.

It calms the inflammation behind hair shedding

Inflammation in the body can make hair shedding worse and slow down regrowth. EPA — one of the main omega-3s — is well known for reducing inflammation. A 2015 study in the Journal of Cosmetic Dermatology found that women with thinning hair who took an omega-3 supplement for six months had less shedding and better hair density than those who didn’t.

Omega-3 won’t stop telogen effluvium completely — nothing will, because the trigger is the weight loss itself — but it helps your body bounce back faster.

It feeds your nails

Strong nails need healthy fats just as much as protein. Brittle, peeling nails are a classic sign that your diet is short on essential fatty acids. Omega-3 helps fix that.

A bonus your gut will thank you for

And here’s one more reason omega-3 is a smart pick on a GLP-1: it’s good for your digestion too. A 2025 study using NHANES data found that people with higher omega-3 intake (especially DHA and EPA) had a meaningfully lower risk of constipation. If you’re on a GLP-1, you already know exactly why that matters.

How omega-3 helps with the most common GLP-1 side effects

Why algae omega-3 is the smarter choice on a GLP-1

Most omega-3 supplements come from fish oil. Algae omega-3 - which is what SIMKA Alpha Omega-3 is made from - is a newer, cleaner option. A few reasons it’s especially worth thinking about if you’re on a GLP-1:

•       No fishy burps. GLP-1s slow down your digestion, which means anything fishy hangs around for a while. Algae omega-3 has no fish taste and no aftertaste.

•       Cleaner. Fish oil can contain traces of mercury, microplastics or other ocean contaminants. Algae is grown in clean, controlled conditions - nothing in, nothing out.

•       Just as effective. A 2024 study found that algae omega-3 works just as well as fish oil at raising the levels in your blood. You’re not giving up anything by choosing the cleaner version.

•       Suits everyone. Algae omega-3 is vegan-friendly and safe in pregnancy, so it works no matter what your diet looks like.

How to take omega-3 on a GLP-1

A few simple tips to get the most out of it:

When to take it

Take omega-3 with food, ideally a meal that has a bit of fat in it. This helps your body absorb it properly. On a GLP-1, that’s usually whatever your biggest meal of the day looks like.

How long until you see a difference

Be patient with this one. Your skin might start feeling better within 6–8 weeks. Hair takes longer - around 3–4 months - because that’s how long the shedding cycle is. Nails are last to show, around 4–6 months as new nail grows in. The changes are slow but they’re real, and they last.

What else helps

Omega-3 works best alongside the basics: enough protein, slow and steady weight loss where you can manage it, and a daily multivitamin to cover other gaps. Think of it as one important piece of the puzzle, not the whole solution.

Soft gels or liquid: which SIMKA Alpha Omega-3 is right for you?

SIMKA Alpha Omega-3 comes in two formats so you can choose what fits your routine. Both contain the same clean, water-extracted algae omega-3 — it just depends how you like to take it.

Soft gels

Easy, fuss-free and made for life on the go. Pop 2-3 with your meal and you’re done. Ideal if you travel often, prefer to keep things simple, or want something you can throw in your bag and forget about.

Liquid

No tablets, no swallowing capsules. Dropper it straight into your mouth, or add it to your favourite juice, smoothie or yoghurt - you’ll barely know it’s there. Great if you don’t love taking pills, or if you want a little more flexibility in how you take it.

Either works. It really does come down to which one you’ll actually take every day, because consistency is what makes the difference.

Frequently asked questions

Will omega-3 stop my hair from falling out on Ozempic?

On its own, probably not. The shedding is mostly being driven by rapid weight loss, which omega-3 can’t change. But omega-3 supports the underlying systems that help your hair recover — less inflammation, healthier follicles, a stronger skin barrier on your scalp — so it can speed up the bounce-back when things settle.

How long until I notice a difference?

Skin: usually 6–8 weeks. Hair: 3–4 months. Nails: 4–6 months. Slower than most people would like, but the changes are real and they stick.

Is omega-3 safe to take with GLP-1 medications?

Omega-3 is generally safe alongside GLP-1s. If you’re also on blood thinners or about to have surgery, check with your doctor first - omega-3 can have a mild blood-thinning effect.

Can I take omega-3 if I’m pregnant or breastfeeding?

GLP-1 medications aren’t recommended during pregnancy. But if you’re pregnant or breastfeeding and looking for an omega-3, algae-based DHA is the form most prenatal supplements use — it’s clean, plant-based and safe.

What’s the difference between algae omega-3 and fish oil?

They both give you EPA and DHA, the two omega-3s your body actually uses. Algae is the cleaner option - no fishy taste, no ocean contaminants, sustainable to produce, and just as effective as fish oil. For most people on a GLP-1, algae is the easier choice.

The bottom line

GLP-1 medications are doing real work in your body, and your hair, skin and nails are often the first to feel it. The shedding, the dryness, the brittle nails — these are temporary, and they’ll pass. But how quickly your body recovers depends on what you give it to work with.

Omega-3 is one of the easiest, lowest-effort things you can add. It works on all three areas at once, it’s well backed by science, and the algae version is clean, gentle and easy to take — whether you prefer a soft gel with breakfast or a few drops in your morning smoothie.

Ready to give your hair, skin and nails the support they need? Shop SIMKA Alpha Omega-3 in soft gels or liquid - vegan, contaminant-free, no fishy taste.

Sources and further reading

•       Skin Appendage Disorders (2025): Dermatologic Implications of Glucagon-Like Peptide-1 Receptor Agonist Medications. Karger Publishers.

•       American Academy of Dermatology: How can GLP-1 drugs affect my skin, hair, and nails?

•       Cleveland Clinic Health Essentials (2025): Does Ozempic cause hair loss?

•       Le Floc’h C, et al. (2015): Effect of a nutritional supplement on hair loss in women. Journal of Cosmetic Dermatology, 14(1): 76–82.

•       Sherratt SCR, et al. (2024): Comparative bioavailability of DHA and EPA from microalgal and fish oil in adults. PMC12524788.

•       Dose-Dependent Effects of Dietary n-3 Fatty Acids on Bowel Health, NHANES 2005–2010 (2025). PubMed 40772019.

This article is for general information and is not a substitute for personalised medical advice. If you’re taking a GLP-1 medication and have concerns about hair loss, skin changes or nutrient deficiencies, speak with your prescribing doctor before starting any supplement.