7 Medications Tourists Should Never Forget Before Flying To Hawaii

I’ve watched the same painful scene on Waikiki Beach for over thirty years.

Sunburned tourists hobbling toward the ABC Store. Paying $19 for aloe gel that costs $4 at any mainland Walgreens. I grew up on Oahu and have flown between every island more times than I can count.

I’m not a tour guide. I’m just the local with a tiny pharmacy in his beach bag. Forget number three, and your whole trip changes. Here’s all seven.

The Sunscreen Hawaii Just Made Illegal To Sell

The first thing in the bag, every single trip, is mineral sunscreen with zinc oxide or titanium dioxide. Not the spray your dermatologist back home likes. The white-paste, slightly chalky kind.

Hawaii’s reef-safe sunscreen law took effect January 1, 2021. The state banned the sale of any sunscreen containing oxybenzone or octinoxate without a doctor’s prescription.

Maui County went further in October 2022. They banned all non-mineral sunscreens entirely. The Big Island followed two months later.

Here’s the part nobody mentions on the gift shop signs. The American Academy of Dermatology actually pushed back on the ban back in 2018. They worried it could discourage sunscreen use in a place where skin cancer rates are already brutal.

So yes, it’s a debated topic. But the law is the law. The reef does not care about your debate.

The Hawaiian sun is no joke either.

The UV index here climbs to 14 or 15 in summer. Mainland summer hits about 8. You’ll burn in twenty minutes if you’re fair-skinned.

I once watched a guy from Minneapolis fall asleep on the sand at Lanikai for ninety minutes. He had to sleep face down for three nights of his honeymoon.

Pro tip from a guy who learned the hard way. Buy the Sun Bum 2-pack at the Costco off Alakawa Street the day you land. About $24 for two bottles.

The Royal Hawaiian Center ABC Store charges $14.99 for a single tube of the same brand. The white film fades in about ten minutes if you rub it in properly. Reapply every ninety minutes if you’re swimming. Even on cloudy days, because Hawaiian clouds are lying con artists.

But sunscreen alone won’t save you when the boat starts rocking.

The 600 Hairpin Turns Most Tourists Aren’t Ready For

If you’re driving the Road to Hana on Maui, climbing to Haleakala for sunrise, or boarding any snorkel catamaran out of Lahaina, you need this in your bag.

Hana has over 600 hairpin turns and 59 single-lane bridges. Your stomach will know about every single one.

Locals swear by Bonine over Dramamine. The active ingredient is meclizine. It works longer and makes you way less drowsy.

Take one the night before your trip. Take another one in the morning. That’s the whole secret.

A 16-pill box runs about $7.49 at Longs Drugs (Hawaii’s CVS). The same box at the Hyatt Regency Maui gift shop? Closer to $19.

Some folks need more firepower. Talk to your doctor before you fly. The scopolamine patch is a prescription-only sticker you put behind your ear.

I used one for a deep-water Big Island fishing charter where eight-foot swells were eating people alive. Worked great. My buddy Keoki, who has driven Hana ten thousand times, still wears one when he goes.

If you hate pills, ginger actually works. Pack ginger chews from any Whole Foods before flying. Six bucks for a bag that handles three road trips.

Science says ginger calms nausea by slowing how fast your stomach empties. My grandmother kept a jar of crystallized ginger in her purse for sixty years. She drove Hana past her eightieth birthday with that jar on the dashboard.

That Maui Jeep Wrangler convertible you reserved for the Hana drive? Make sure your phone holds a fresh charge and your AC works on day one. Heat plus winding turns plus a dehydrated rental driver equals the worst day of your trip.

Pro tip. Don’t take Dramamine if you’re driving. The non-drowsy formula isn’t actually non-drowsy. Pass the wheel to your partner and stare at the horizon like your life depends on it.

And speaking of dumb packing decisions, the 7 items Hawaii locals genuinely laugh at tourists for packing almost always include the wrong assumption about Hawaii roads.

There’s a sneakier issue, though. One you can’t see coming.

The 800 Tourists Stung In One Morning Knew This Too Late

This is the medication tourists forget the most. Diphenhydramine is the generic name for Benadryl. A small pack of pills and a tube of the cream version. Pack both.

Why? Because Hawaii has box jellyfish that show up like clockwork.

They drift onshore on south-facing beaches like Waikiki, Ala Moana, Hanauma Bay, and Poipu about eight to ten days after every full moon. The Waikiki Aquarium publishes a public calendar so you can plan around it.

One single day in Waikiki history saw more than 800 people seek medical attention for jellyfish stings. Eight hundred. In one morning.

Then there’s the mosquitoes. Hawaii doesn’t have malaria, but the mosquitoes that carry dengue fever are absolutely here.

The state Department of Health confirmed 14 travel-related dengue cases by November 2025, more than the 16 total in all of 2024.

None of them came from local mosquitoes biting locals. Yet. The mosquitoes that can transmit it live on every island.

The most dangerous things on a Hawaii beach aren’t always in the water. Some live in the trail you walked to get there.

If you’ve ever wondered which plants and animals look completely harmless but landed tourists in the ER, it’s worth knowing the 13 dangerous Hawaii species that look like a postcard until they put you in the hospital. I keep that list in my head every time someone wants to pose for a flower photo.

Antihistamines knock down the histamine reaction your body throws when stung or bitten. They also work on plant rashes, food allergies, and that mystery hives breakout you’ll get from rolling around in tropical grass.

I’d never go to a luau without two Benadryl pills in my pocket. Some people get hit hard by the sulfites in poke or mai tais and don’t even know they have the allergy until that night.

Insider tip nobody tells you. If you get stung by a box jellyfish, do not pee on it. That is a TV myth. Real University of Hawaii research, published in the journal Toxins, showed urine, fresh water, and ice all make stings worse.

The right move is to flush with vinegar, then immerse in hot water as hot as you can stand. Most lifeguard stands on Oahu and Maui keep vinegar on hand. Most major resorts will have it too if you ask security.

There’s something else that loves to get under your skin in Hawaii. Quite literally.

The Rash That Wakes Tourists Up At Three AM On Day Three

A tiny tube of 1% hydrocortisone cream. Cheap. Light. The whole tube fits in a contact lens case.

You’ll thank me when you wake up at 3 AM on day three of your trip with a mystery itch in a place a tropical vacation should never itch.

Coral scrapes get angry fast in saltwater. Mosquito bites in 85-degree humidity swell up like marbles.

Mango tree sap, lychee skin, and even fragrant flower leis can give you a contact rash if you’ve never met them before.

I once woke up on Kauai with my whole forearm puffed red because I’d brushed against a passion fruit vine on a hike. The hydrocortisone shrank the welt in twenty minutes.

The cream works for post-jellyfish itch, too, after the vinegar treatment is done and the stinging stops. Beach security at one West Maui resort actually offered a guest hydrocortisone after a recent Kaanapali sting. That was their whole solution, and the guest was grateful.

You can sub in calamine lotion if you prefer. Hydrocortisone wins because it’s stronger, dries faster, and doesn’t leave that pink ghost paint behind.

I’ve used it on bug bites, plant rashes, sunburn-irritated areas, and small healing scratches.

Pack a tiny bottle of isopropyl alcohol pads with it. Coral scrapes need to be cleaned before the cream goes on. The salt water you swam in is full of bacteria you don’t want to think about.

Pro tip. Smart Hawaii travelers don’t wing it. They built the kit at home for about $39 from Longs Drugs before flying.

The same kit at the Outrigger Reef Waikiki Beach Resort gift shop runs north of $147 because tourists in pain don’t shop around. The Hudson News at Honolulu airport prices it around $89 with a polite smile.

A 7-day Allianz travel insurance policy for two people on a Hawaii trip costs about $89 and covers the urgent care visit if your kit fails. Worth considering.

But there’s a different kind of pain coming for you.

The Two Pain Pills Smart Travelers Pack In Different Pockets

Pack both ibuprofen and acetaminophen. Different drugs. Different jobs. Don’t substitute.

Ibuprofen, sold as Advil or Motrin, fights inflammation. That makes it the right pick for sunburn, sprained ankles from coral, and aching legs after Diamond Head Crater. It also calms the swelling around bug bites and jellyfish stings.

Acetaminophen, sold as Tylenol, is the better pick for altitude headaches. Altitude is a real thing in Hawaii, even though most folks picture flat beaches.

The summit of Mauna Kea on the Big Island sits at 13,803 feet. Higher than two and a half Denvers stacked on top of each other.

A peer-reviewed study of Mauna Kea visitors found that 30% of tourists develop symptoms of acute mountain sickness. Headaches, nausea, weird tiredness, and brain fog.

Haleakala on Maui, the famous sunrise crater, tops out at 10,023 feet. Plenty of folks get crater headaches up there too.

The visitor center on Mauna Kea sits at 9,200 feet. They tell you to spend at least 30 minutes there before going higher, just to acclimate.

Now here’s the controversial bit your travel doctor probably won’t say at home. Do not take aspirin in Hawaii if you have any chance of dengue fever symptoms.

The Hawaii Department of Health flagged this in their April 2025 medical advisory. Aspirin and ibuprofen can both cause dangerous bleeding if you happen to have dengue. Acetaminophen is the safer fever pick.

Most people will be fine. But if you get a sudden fever a week into your trip, switch to Tylenol and call a doctor.

Sunburn is where pain relievers really shine. Take 400 milligrams of ibuprofen, slap on the aloe, and you’ll go from miserable to mostly okay in 90 minutes.

Pro tip. Buy a small lip balm with built-in SPF. Lips burn first because nobody puts sunscreen there. A burned lower lip will ruin every meal you eat for four days. The Hawaiian Airlines flight back to LAX is 5.5 hours of misery if you’re chewing each bite carefully.

You’re not done yet. There’s one more category most people skip until it’s too late.

The Snorkel Day You Can’t Afford To Lose

Loperamide. The generic name for Imodium. Cheap. Tiny. Lifesaver.

You probably won’t get traveler’s diarrhea in Hawaii the way you might in less developed places. The water is safe to drink. Food handling is solid. Things still happen.

Maybe you ate a poke bowl that sat in the sun too long at a beach picnic. Maybe you tried five new fruits in one afternoon at the Hilo farmers’ market.

Maybe the all-you-can-eat hotel breakfast had a tray of papaya somebody forgot to chill. Maybe it’s your stomach reacting to the time zone change.

Whatever the reason, GI trouble on a snorkel day or a helicopter day is a disaster.

You paid $329 per person for that Na Pali Coast catamaran. You’re not skipping it because of a bathroom issue.

Pack a small bottle of Pepto Bismol chewables alongside the Imodium. Pepto handles the upset stomach. Imodium handles the runs. Together, they cover both ends, no pun intended.

If you’re hiking near streams or waterfalls, there’s a separate concern called leptospirosis. It’s a bacterial disease found in fresh water in Hawaii.

About half of all U.S. cases happen here.

Don’t drink stream water, even if some Instagram influencer told you it’s pure. Don’t swim in fresh water with open cuts. The bacteria get in through your eyes, nose, mouth, or any wound.

If you start running a fever along with stomach trouble two to ten days after a freshwater hike, that’s your moment to call a doctor. Real talk.

Locals call this “stay pono with the water.” It means stay righteous and respectful of how powerful nature is here. The streams that look the cleanest can be the most contaminated. Feral pigs and mongoose pee right where the water collects.

If you’d rather not figure out which streams are safe and which aren’t, the 15 Hawaii tourist scams that quietly drain vacation budgets every single week almost always start with someone trusting the wrong piece of advice on the wrong day.

But none of this matters if you skip the most important medicine in the bag.

Why 15 Tourists A Week Run Out Of Meds On Maui

This is the one that lands more tourists in urgent care than any other mistake. Your regular prescriptions, in their original bottles, with a buffer of extra doses for delays.

I’ve seen people forget heart medication. Insulin. Birth control. Antidepressants. SSRIs. Asthma inhalers. Blood thinners.

Every single time, they end up at a Hawaii urgent care, paying out of pocket, because Hawaii pharmacies cannot fill prescriptions written by out-of-state mid-level practitioners.

They cannot fill out-of-state controlled substance prescriptions at all. The state law was put in place to fight drug abuse, and it works pretty well. It’s a real headache for visitors.

A pharmacist on Maui who fills 60% tourist prescriptions wrote that her store sees 15 to 20 tourists a week running out of meds during high season.

Flight delays. Ten-day vacations that turned into fourteen days. Lost suitcases. Mistaken pill counts.

If you forgot something critical and need a doctor fast? The Hyatt Regency Waikiki Beach Resort and most major Waikiki hotels keep 24/7 Doctors On Call numbers at the front desk.

They come to your room in about 20 minutes for around $250 a visit.

Cheaper than the $400-plus for AFC Urgent Care Honolulu, plus the Uber, plus the lost half-day. The hotel doctor will write a Hawaii-licensed prescription right there.

Three rules from a guy who has visited people in three different ER waiting rooms in Honolulu:

• Pack your meds in your carry-on, never checked luggage. If your bag goes to Saskatchewan, your medicine stays with you.
• Bring a printed copy of your prescriptions plus your doctor’s contact info. Take a phone photo too as backup.
• Bring at least three extra days’ worth of every prescription. Five if it’s something critical like heart medication or insulin.

TSA does not require your pills to be in their original bottles, but state laws can vary. Hawaii doesn’t enforce this in practice for non-controlled medications. Pill organizers are fine.

But controlled substances absolutely should travel in the original prescription bottle with your name on it. No exceptions.

I watched a tourist try to talk his way out of a Vicodin issue with TSA in 2018, and it did not end well for his vacation.

If you wear contact lenses, pack twice as many as you need. Saltwater, sand, and reef-safe sunscreen all eat lenses. Glasses as backup, always.

A Few Bonus Things Locals Pack But Tourists Forget

I said seven. Here are a few extras I throw in my own bag that aren’t strictly medicines but live in the same kit.

• DEET 20-30% bug spray for any hike or evening outdoors, especially on the windward sides
• Aloe vera gel with lidocaine for sunburn, kept in the hotel mini fridge for cold relief
• Liquid IV electrolyte packets for the inevitable dehydration day after the helicopter tour
• Ginger chews as a backup to motion sickness pills
• Saline eye drops for sand, salt, and chlorine

That’s it. Five extras. Total weight under one pound. Easily fits in a quart zip-top bag.

A Quick Word On Where To Stay

The brief bit about accommodations, since this isn’t a hotel article. If you want a Waikiki resort with a real pharmacy nearby and walking-distance medical care, the Hilton Hawaiian Village Waikiki Beach Resort is hard to beat.

Five towers, 18 restaurants, and a Longs Drugs Pharmacy are a four-minute walk away.

For something quieter on Oahu, the Waikiki Resort Hotel sits walkable from the beach but two blocks back from the busiest stretch.

If your trip is on Maui’s west side, the Honua Kai condos in Kaanapali put you on a quieter beach with full kitchens. Useful when you need to make ginger tea at 2 AM for a stomach that hates you.

The One Thing I’d Tell My Own Mother

If you take nothing else from this article, take this one habit. Build your Hawaii kit at home, before the trip, in a quart-sized zip-top bag.

Throw it in your carry-on. Never check it. Never leave it.

A trip to Longs Drugs (the local CVS) for two pills and a bottle of vinegar can eat 90 minutes of your vacation.

A trip to urgent care can cost $400 and half a day.

A 24/7 hotel doctor visit at $250 still beats running around Waikiki at midnight with a sting on your thigh.

The whole kit I described costs about $45 at home and weighs less than a paperback book.

I’ve watched too many people fly 5,000 miles to lie in their hotel room with a sunburn, a jellyfish welt, and motion sickness from the airport ride.

Not because they didn’t want to enjoy paradise. Because they didn’t pack right.

Hawaii doesn’t punish unprepared visitors. The sun, the salt, and the volcanoes do. They’ve been doing it since the first Polynesians paddled their canoes here twelve hundred years ago.

So pack your kit. Wear your zinc. Take your Bonine before the road bends. Stash your Benadryl somewhere your future stung self can find it at midnight.

Then forget you have any of it. Because if you pack right, you probably won’t need most of it. That’s the whole point.

The day you do need it, you’ll feel like the smartest person on the beach. And if you really want to feel smart before you even land, the 9 simple rules locals wish every tourist would read on the plane change how every single day of your trip feels.

A hui hou.