
Can I take antihistamines everyday? More than the recommended dose? What if I’m pregnant? Here’s what the research says
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Allergies happen when your immune system overreacts to a normally harmless substance like dust or pollen. Hay fever, hives and anaphylaxis are all types of allergic reactions.
Many of those affected reach quickly for antihistamines to treat mild to moderate allergies (though adrenaline, not antihistamines, should always be used to treat anaphylaxis).
If you’re using oral antihistamines very often, you might have wondered if it’s OK to keep relying on antihistamines to control symptoms of allergies. The good news is there’s no research evidence to suggest regular, long-term use of modern antihistamines is a problem.
But while they’re good at targeting the early symptoms of a mild to moderate allergic reaction (sneezing, for example), oral antihistamines aren’t as effective as steroid nose sprays for managing hay fever. This is because nasal steroid sprays target the underlying inflammation of hay fever, not just the symptoms.
Here are the top six antihistamines myths – busted.
Myth 1. Oral antihistamines are the best way to control hay fever symptoms
Wrong. In fact, the recommended first line medical treatment for most patients with moderate to severe hay fever is intranasal steroids. This might include steroid nose sprays (ask your doctor or pharmacist if you’d like to know more).
Studies have shown intranasal steroids relieve hay fever symptoms better than antihistamine tablets or syrups.
To be effective, nasal steroids need to be used regularly, and importantly, with the correct technique.
In Australia, you can buy intranasal steroids without a doctor’s script at your pharmacy. They work well to relieve a blocked nose and itchy, watery eyes, as well as improve chronic nasal blockage (however, antihistamine tablets or syrups do not improve chronic nasal blockage).
Some newer nose sprays contain both steroids and antihistamines. These can provide more rapid and comprehensive relief from hay fever symptoms than just oral antihistamines or intranasal steroids alone. But patients need to keep using them regularly for between two and four weeks to yield the maximum effect.
For people with seasonal allergic rhinitis (hayfever), it may be best to start using intranasal steroids a few weeks before the pollen season in your regions hits. Taking an antihistamine tablet as well can help.
Antihistamine eye drops work better than oral antihistamines to relieve acutely itchy eyes (allergic conjunctivitis).
Myth 2. My body will ‘get used to’ antihistamines
Some believe this myth so strongly they may switch antihistamines. But there’s no scientific reason to swap antihistamines if the one you’re using is working for you. Studies show antihistamines continue to work even after six months of sustained use.
Myth 3. Long-term antihistamine use is dangerous
There are two main types of antihistamines – first-generation and second-generation.
First-generation antihistamines, such as chlorphenamine or promethazine, are short-acting. Side effects include drowsiness, dry mouth and blurred vision. You shouldn’t drive or operate machinery if you are taking them, or mix them with alcohol or other medications.
Most doctors no longer recommend first-generation antihistamines. The risks outweigh the benefits.
The newer second-generation antihistamines, such as cetirizine, fexofenadine, or loratadine, have been extensively studied in clinical trials. They are generally non-sedating and have very few side effects. Interactions with other medications appear to be uncommon and they don’t interact badly with alcohol. They are longer acting, so can be taken once a day.
Although rare, some side effects (such as photosensitivity or stomach upset) can happen. At higher doses, cetirizine can make some people feel drowsy. However, research conducted over a period of six months showed taking second-generation antihistamines is safe and effective. Talk to your doctor or pharmacist if you’re concerned.
Myth 4. Antihistamines aren’t safe for children or pregnant people
As long as it’s the second-generation antihistamine, it’s fine. You can buy child versions of second-generation antihistamines as syrups for kids under 12.
Though still used, some studies have shown certain first-generation antihistamines can impair childrens’ ability to learn and retain information.
Studies on second-generation antihistamines for children have found them to be safer and better than the first-generation drugs. They may even improve academic performance (perhaps by allowing kids who would otherwise be distracted by their allergy symptoms to focus). There’s no good evidence they stop working in children, even after long-term use.
For all these reasons, doctors say it’s better for children to use second-generation than first-generation antihistimines.
What about using antihistimines while you’re pregnant? One meta analysis of combined study data including over 200,000 women found no increase in fetal abnormalities.
Many doctors recommend the second-generation antihistamines loratadine or cetirizine for pregnant people. They have not been associated with any adverse pregnancy outcomes. Both can be used during breastfeeding, too.
Myth 5. It is unsafe to use higher than the recommended dose of antihistamines
Higher than standard doses of antihistamines can be safely used over extended periods of time for adults, if required.
But speak to your doctor first. These higher doses are generally recommended for a skin condition called chronic urticaria (a kind of chronic hives).
Myth 6. You can use antihistamines instead of adrenaline for anaphylaxis
No. Adrenaline (delivered via an epipen, for example) is always the first choice. Antihistamines don’t work fast enough, nor address all the problems caused by anaphylaxis.
Antihistamines may be used later on to calm any hives and itching, once the very serious and acute phase of anaphylaxis has been resolved.
In general, oral antihistamines are not the best treatment to control hay fever – you’re better off with steroid nose sprays. That said, second-generation oral antihistamines can be used to treat mild to moderate allergy symptoms safely on a regular basis over the long term.
Janet Davies, Respiratory Allergy Stream Co-chair, National Allergy Centre of Excellence; Professor and Head, Allergy Research Group, Queensland University of Technology; Connie Katelaris, Professor of Immunology and Allergy, Western Sydney University, and Joy Lee, Respiratory Allergy Stream member, National Allergy Centre of Excellence; Associate Professor, School of Public Health and Preventive Medicine, Monash University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Recommended
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Where Nutrition Meets Habits!
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Where Nutrition Meets Habits…
This is Claudia Canu, MSc., INESEM. She’s on a mission to change the way we eat:
Often, diet is a case of…
- Healthy
- Easy
- Cheap
(choose two)
She wants to make it all three, and tasty too. She has her work cut out for her, but she’s already blazed quite a trail personally:
❝Nine months before turning 40 years old, I set a challenge for myself: Arrive to the day I turn 40 as the best possible version of myself, physically, mentally and emotionally.❞
~ Claudia Canu
In Her Own Words: My Journey To My Healthy 40s
And it really was quite a journey:
- September: Changes That Destabilize
- October: Looking for Focus
- November: New Habits
- December: Analyzing The First Results
- January: Traveling & Perfectionism
- February: Habits & Goals
- March: Connection, Cravings, & Organization
- April: Physical & Emotional Changes After 7 Months
- May: Reflections & Considerations
- June: Challenge Is Over
For those of us who’d like the short-cut rather than a nine-month quasi-spiritual journey… based on both her experience, and her academic and professional background in nutrition, her main priorities that she settled on were:
- Making meals actually nutritionally balanced, which meant re-thinking what she thought a meal “should” be
- Making nutritionally balanced meals that didn’t require a lot of skill and/or resources
- That’s it!
But, easier said than done… Where to begin?
She shares an extensive list of recipes, from meals to snacks (I thought I was the only one who made coffee overnight oats!), but the most important thing from her is:
Claudia’s 10 Guiding Principles:
- Buy only fresh ingredients that you are going to cook yourself. If you decide to buy pre-cooked ones, make sure they do not have added ingredients, especially sugar (in all its forms).
- Use easy and simple cooking methods.
- Change ingredients every time you prepare your meals.
- Prepare large quantities for three or four days.
- Store the food separately in tightly closed Tupperware.
- Organize yourself to always have ready-to-eat food in the fridge.
- When hungry, mix the ingredients in the ideal amounts to cover the needs of your body.
- Chew well and take the time to taste your food.
- Eat foods that you like and enjoy.
- Do not overeat but don’t undereat either.
We have only two quibbles with this fine list, which are:
About Ingredients!
Depending on what’s available around you, frozen and/or tinned “one-ingredient” foods can be as nutritional as (if not more nutritional than) fresh ones. By “one-ingredient” foods here we mean that if you buy a frozen pack of chopped onions, the ingredients list will be: “chopped onions”. If you buy a tin of tomatoes, the ingredients will say “Tomatoes” or at most “Tomatoes, Tomato Juice”, for example.
She does list the ingredients she keeps in; the idea that with these in the kitchen, you’ll never be in the position of “oh, we don’t have much in, I guess it’s a pizza delivery night” or “well there are some chicken nuggets at the back of the freezer”.
Check Out And Plan: 10 Types Of Ingredients You Should Always Keep In Your Kitchen
Here Today, Gone Tomorrow?
Preparing large quantities for three or four days can result in food for one or two days if the food is unduly delicious
But! Claudia has a remedy for that:
Read: How To Eliminate Food Cravings And What To Do When They Win
Anyway, there’s a wealth of resources in the above-linked pages, so do check them out!
Perhaps the biggest take-away is to ask yourself:
“What are my guiding principles when it comes to food?”
If you don’t have a ready answer, maybe it’s time to tackle that—whether Claudia’s way or your own!
Share This Post
-
Vital Aspects of Holistic Wellness
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
It’s Q&A Day!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
This newsletter has been growing a lot lately, and so have the questions/requests, and we love that! In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
Q: I am interested in the following: Aging, Exercise, Diet, Relationships, Purpose, Lowering Stress
You’re going to love our Psychology Sunday editions of 10almonds! You might like some of these…
- Relationships: Seriously Useful Communication Skills!
- Purpose: Are You Flourishing? (There’s a Scale)
- Managing stress: Lower Your Cortisol! (Here’s Why & How)
- Also about managing stress: Sunday Stress-Buster
- Also applicable to stress: How To Set Your Anxiety Aside
Share This Post
-
Just One Thing – by Dr. Michael Mosley
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
This is a collection of easy-to-implement changes that have good science behind them to show how they can benefit us. Some things are obvious (e.g: drink water); others, less so (e.g: sing, to reduce inflammation).
The book is divided thematically into times of the day, though in many cases it’s not a hard rule that a thing needs to be done at a certain time. Others are, like a cold shower in the morning and hot bath before bed—you might not want to switch those around!
The style is very pop-science, and does not have in-line citations for claims, but it does have a bibliography in the bag organized by each “one thing”, e.g. it might say “get some houseplants” and then list a number of references supporting that, with links to the studies showing how that helps. For those with the paper version, don’t worry, you can copy the URL from the book into your browser and see it that way. In any case, there are 2–6 scientific references for each claim, which is very respectable for a pop-sci book.
Bottom line: if you’re looking for evidence-based “one little thing” changes that can make a big difference, this book has lots!
Click here to check out Just One Thing, and improve your life!
Share This Post
Related Posts
-
Healthy Hormones And How To Hack Them
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
Healthy Hormones And How To Hack Them!
Hormones are vital for far more than they tend to get credit for. Even the hormones that people think of first—testosterone and estrogen—do a lot more than just build/maintain sexual characteristics and sexual function. Without them, we’d lack energy, we’d be depressed, and we’d soon miss the general smooth-running of our bodies that we take for granted.
And that’s without getting to the many less-talked-about hormones that play a secondary sexual role or are in the same general system…
How are your prolactin levels, for example?
Unless you’re ill, taking certain medications, recently gave birth, or picked a really interesting time to read this newsletter, they’re probably normal, by the way.
But, prolactin can explain “la petite mort”, the downturn in energy and the somewhat depressed mood that many men experience after orgasm.
Otherwise, if you have too much prolactin in general, you will be sleepy and depressed.
Prolactin’s primary role? In women, it stimulates milk production when needed. In men, it plays a role in regulating mood and metabolism.
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Fermenting Everything – by Andy Hamilton
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
This is not justanother pickling book! This is, instead, what it says on the front cover, “fermenting everything”.
Ok, maybe not literally everything, but every kind of thing that can reasonably be fermented, and it’s probably a lot more things than you might think.
From habanero chutney to lacto-lemonade, aioli to kombucha, Ukrainian fermented tomatoes to kvass. We could go on, but we’d soon run out of space. You get the idea. If it’s a fermented product (food, drink, condiment) and you’ve heard of it, there’s probably a recipe in here.
All in all, this is a great way to get in your gut-healthy daily dose of fermented products!
He does also talk safety, and troubleshooting too. And so long as you have a collection of big jars and a fairly normally-furnished kitchen, you shouldn’t need any more special equipment than that, unless you decide to you your fermentation skills for making beer (which does need some extra equipment, and he offers advice on that—our advice as a health science publication is “don’t drink beer”, though).
Bottom line: with this in hand, you can create a lot of amazing foods/drinks/condiments that are not only delicious, but also great for gut health.
Click here to check out Fermenting Everything, and widen your culinary horizons!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Chair Stretch Workout Guide
10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.
It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝The 3 most important exercises don’t work if you can’t get on the floor. I’m 78, and have knee replacements. What about 3 best chair yoga stretches? Love your articles!❞
Here are six!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails: