Antihistamines’ Generation Gap

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Are You Ready For Allergy Season?

For those of us in the Northern Hemisphere, fall will be upon us soon, and we have a few weeks to be ready for it. A common seasonal ailment is of course seasonal allergies—it’s not serious for most of us, but it can be very annoying, and can disrupt a lot of our normal activities.

Suddenly, a thing that notionally does us no real harm, is making driving dangerous, cooking take three times as long, sex laughable if not off-the-table (so to speak), and the lightest tasks exhausting.

So, what to do about it?

Antihistamines: first generation

Ye olde antihistamines such as diphenhydramine and chlorpheniramine are probably not what to do about it.

They are small molecules that cross the blood-brain barrier and affect histamine receptors in the central nervous system. This will generally get the job done, but there’s a fair bit of neurological friendly-fire going on, and while they will produce drowsiness, the sleep will usually be of poor quality. They also tax the liver rather.

If you are using them and not experiencing unwanted side effects, then don’t let us stop you, but do be aware of the risks.

See also: Long-term use of diphenhydramine ← this is the active ingredient in Benadryl in the US and Canada, but safety regulations in many other countries mean that Benadryl has different, safer active ingredients elsewhere.

Antihistamines: later generations

We’re going to aggregate 2nd gen, 3rd gen, and 4th gen antihistamines here, because otherwise we’ll be writing a history article and we don’t have room for that. But suffice it to say, later generations of antihistamines do not come with the same problems.

Instead of going in all-guns-blazing to the CNS like first-gens, they are more specific in their receptor-targetting, resulting in negligible collateral damage:

CSACI position statement: Newer generation H1-antihistamines are safer than first-generation H1-antihistamines and should be the first-line antihistamines for the treatment of allergic rhinitis and urticaria

Special shout-out to cetirizine and loratadine, which are the drugs behind half the brand names you’ll see on pharmacy shelves around most of the world these days (including many in the US and Canada).

Note that these two are very often discussed in the same sentence, sit next to each other on the shelf, and often have identical price and near-identical packaging. Their effectiveness (usually: moderate) and side effects (usually: low) are similar and comparable, but they are genuinely different drugs that just happen to do more or less the same thing.

This is relevant because if one of them isn’t working for you (and/or is creating an unwanted side effect), you might want to try the other one.

Another honorable mention goes to fexofenadine, for which pretty much all the same as the above goes, though it gets talked about less (and when it does get mentioned, it’s usually by its most popular brand name, Allegra).

Finally, one that’s a little different and also deserving of a special mention is azelastine. It was recently (ish, 2021) moved from being prescription-only to being non-prescription (OTC), and it’s a nasal spray.

It can cause drowsiness, but it’s considered safe and effective for most people. Its main benefit is not really the difference in drug, so much as the difference in the route of administration (nasal rather than oral). Because the drug is in liquid spray form, it can be absorbed through the mucus lining of the nose and get straight to work on blocking the symptoms—in contrast, oral antihistamines usually have to go into your stomach and take their chances there (we say “usually”, because there are some sublingual antihistamines that dissolve under the tongue, but they are less common.)

Better than antihistamines?

Writer’s note: at this point, I was given to wonder: “wait, what was I squirting up my nose last time anyway?”—because, dear readers, at the time I got it I just bought one of every different drug on the shelf, desperate to find something that worked. What worked for me, like magic, when nothing else had, was beclometasone dipropionate, which a) smelled delightfully of flowers, which might just be the brand I got, b) needs replacing now because I got it in March 2023 and it expired July 2024, and c) is not an antihistamine at all.

But, that brings us to the final chapter for today: systemic corticosteroids

They’re not ok for everyone (check with your doctor if unsure), and definitely should not be taken if immunocompromised and/or currently suffering from an infection (including colds, flu, COVID, etc) unless your doctor tells you otherwise (and even then, honestly, double-check).

But! They can work like magic when other things don’t. Unlike antihistamines, which only block the symptoms, systemic corticosteroids tackle the underlying inflammation, which can stop the whole thing in its tracks.

Here’s how they measure up against antihistamines:

❝The results of this systematic review, together with data on safety and cost effectiveness, support the use of intranasal corticosteroids over oral antihistamines as first line treatment for allergic rhinitis.❞

~ Dr. Robert Puy et al.

Read in full: Intranasal corticosteroids versus oral H1 receptor antagonists in allergic rhinitis: systematic review of randomised controlled trials

Take care!

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    From Tofu to Salmon

    This video (below) by SweetPotatoSoul isn’t just a recipe tutorial; it’s an inspiring journey into the world of vegan cooking, proving that reducing animal products doesn’t have to mean sacrificing flavor.

    The key to her vegan salmon is the tofu. However, there’s a trick to the tofu – you have to press it.

    Essentially, this involved putting some paper towel on either side of the tofu, and then placing a heavy object on top; this removes excess water and, more importantly, primes the tofu to absorb the flavor of your marinade!

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  • Carrot vs Kale – Which is Healthier?

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    Our Verdict

    When comparing carrot to kale, we picked the kale.

    Why?

    These are both known as carotene-containing heavyweights, but kale emerges victorious:

    In terms of macros, carrot has more carbs while kale has more protein and fiber. An easy win there for kale.

    When it comes to vitamins, both are great! But, carrots contain more of vitamins A, B5, and choline, whereas kale contains more of vitamins B1, B2, B3, B6, B9, C, E, and K. And while carrot’s strongest point is vitamin A, a cup of carrots contains around 10x the recommended daily dose of vitamin A, whereas a cup of kale contains “only” 6x the recommended daily dose of vitamin A. So, did we really need the extra in carrots? Probably not. In any case, kale already won on overall vitamin coverage, by a long way.

    In the category of minerals, kale again sweeps. On the one hand, carrots contain more sodium. On the other hand, kale contains a lot more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc. Not a tricky choice!

    But don’t be fooled: carrots really are a nutritional powerhouse and a great food. Kale is just better—nutritionally speaking, in any case. If you’re making a carrot cake, please don’t try substituting kale; it will not work 😉

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  • The Starch Solution – by Dr. John McDougall & Mary McDougall

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    Carb-strong or carb-wrong? We’ve written about this ourselves before, and it comes down to clarifying questions of what and how and why. Even within the general field of carbs, even within the smaller field of starch, not all foods are equal. A slice of white bread and a baked potato are both starchy, but the latter also contains fiber, vitamins, minerals, and suchlike.

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    Antibiotics: Useful Even Less Often Than Previously Believed (And Still Just As Dangerous)

    You probably already know that antibiotics shouldn’t be taken unless absolutely necessary. Not only does taking antibiotics frivolously increase antibiotic resistance (which is bad, and kills people), but also…

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    Candida, which we all have in us to some degree, feeds on sugar (including the sugar formed from breaking down alcohol, by the way) and refined carbs. Then it grows, and puts its roots through your intestinal walls, linking with your neural system. Then it makes you crave the very things that will feed it and allow it to put bigger holes in your intestinal walls.

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    And as for how that comes about, it’s like we said:

    See also: Candida albicans as a commensal and opportunistic pathogen in the intestine

    That’s not all…

    And that’s just C. albicans, never mind things like C. diff. that can just outright kill you easily.

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    Four Ways Antibiotics Can Kill You

    It gets worse (now comes the new news)

    So, what are antibiotics good for? Surely, for clearing up chesty coughs, lower respiratory tract infections, right? It’s certainly one of the two things that antibiotics are most well-known for being good at and often necessary for (the other being preventing/treating sepsis, for example in serious and messy wounds).

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    A large, nationwide (US) observational study of people who sought treatment in primary or urgent care settings for lower respiratory tract infections found…

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    the use of antibiotics provided no measurable impact on the severity or duration of coughs even if a bacterial infection was present.

    Read for yourself:

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    And in the words of the lead author of that study,

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    ~ Dr. Daniel Merenstein

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    ❝Serious cough symptoms and how to treat them properly needs to be studied more, perhaps in a randomized clinical trial as this study was observational and there haven’t been any randomized trials looking at this issue since about 2012.❞

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    You can read a lot more detail here:

    Antibiotics aren’t effective for most lower tract respiratory infections

    In summary…

    Sometimes, antibiotics really are a necessary and life-saving medication. But most of the time they’re not, and given their great potential for harm, they may be best simultaneously viewed as the very dangerous threat they also are, and used only when those “heavy guns” are truly what’s required.

    Take care!

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  • Signs Of Low Estrogen In Women: What Your Skin, Hair, & Nails Are Trying To Tell You

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    Don’t Forget…

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