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!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
-
Almonds vs Peanuts – Which is Healthier?
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.
Our Verdict
When comparing almonds to peanuts, we picked the almonds.
Why?
No, it’s not just our pro-almonds bias… But it’s also not as one-sided, nutritionally speaking, as you might think!
In terms of macros, almonds have a lot more fiber, and moderately more carbs, the ratio of which give almonds the lower glycemic index. On the other hand, peanuts have a little more protein. Both of these nuts are equally fatty, but peanuts have the higher saturated fat content. All in all, we say the biggest deciding factor is the fiber, and hand this one to the almonds.
In the category of vitamins, almonds have more of vitamins B2 and E, while peanuts have more of vitamins B1, B3, B5, B6, B7, and B9. An easy win for peanuts this time.
When it comes to minerals, almonds have more calcium, magnesium, manganese, phosphorus, and potassium, while peanuts have more copper, iron, selenium, and zinc. Thus, a 5:4 marginal win for almonds.
Adding up the sections makes for an overall win for almonds, but as you can see, it was close and peanuts certainly have their merits too, so by all means enjoy either or both; diversity is good!
Unless you are allergic, in which case, obviously please don’t do that.
Want to learn more?
You might like to read:
Why You Should Diversify Your Nuts!
Enjoy!
Share This Post
-
Get Rid Of Female Facial Hair Easily
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.
Dr. Sam Ellis, dermatologist, explains:
Hair today; gone tomorrow
While a little peach fuzz is pretty ubiquitous, coarser hairs are less common in women especially earlier in life. However, even before menopause, such hair can be caused by main things, ranging from PCOS to genetics and more. In most cases, the underlying issue is excess androgen production, for one reason or another (i.e. there are many possible reasons, beyond the scope of this article).
Options for dealing with this include…
- Topical, such as eflornithine (e.g. Vaniqa) thins terminal hairs (those are the coarse kind); a course of 6–8 weeks continued use is needed.
- Hormonal, such as estrogen (opposes testosterone and suppresses it), progesterone (downregulates 5α-reductase, which means less serum testosterone is converted to the more powerful dihydrogen testosterone (DHT) form), and spironolactone or other testosterone-blockers; not hormones themselves, but they do what it says on the tin (block testosterone).
- Non-medical, such as electrolysis, laser, and IPL. Electrolysis works on all hair colors but takes longer; laser needs to be darker hair against paler skin* (because it works by superheating the pigment of the hair while not doing the same to the skin) but takes more treatments, and IPL is a less-effective more-convenient at-home option, that works on the same principles as laser (and so has the same color-based requirements), and simply takes even longer than laser.
*so for example:
- Black hair on white skin? Yes
- Red hair on white skin? Potentially; it depends on the level of pigmentation. But it’s probably not the best option.
- Gray/blonde hair on white skin? No
- Black hair on mid-tone skin? Yes, but a slower pace may be needed for safety
- Anything else on mid-tone skin? No
- Anything on dark skin? No
For more on all of this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Too Much Or Too Little Testosterone?
Take care!
Share This Post
-
Top 10 Causes Of High Blood Pressure
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.
As Dr. Frita Fisher explains, these are actually the top 10 known causes of high blood pressure. Number zero on the list would be “primary hypertension”, which means high blood pressure with no clear underlying cause.
Superficially, this feels a little like the sometime practice of writing the catch-all “heart failure” as the cause of death on a death certificate, because yes, that heart sure did stop beating. But in reality, primary hypertension is most likely often caused by such things as unmanaged chronic stress—something that doesn’t show up on most health screenings.
Dr. Fisher’s Top 10
- Thyroid disease: both hyperthyroidism and hypothyroidism can cause high blood pressure.
- Obstructive sleep apnea: characterized by snoring, daytime sleepiness, and headaches, this condition can lead to hypertension.
- Chronic kidney disease: diseases ranging from diabetic nephropathy to renal vascular disease can cause high blood pressure.
- Elevated cortisol levels: conditions like Cushing’s syndrome or disease, which involve high cortisol levels, can lead to hypertension—as can a lifestyle with a lot of chronic stress, but that’s less readily diagnosed as such than something one can tell from a blood test.
- Elevated aldosterone levels: excess aldosterone from the adrenal glands causes the body to retain salt and water, increasing blood pressure, because more stuff = more pressure.
- Brain tumor: tumors that increase intracranial pressure can cause a rise in blood pressure to ensure adequate brain perfusion. In these cases, the hypertension is keeping you alive—unless it kills you first. If this seems like a strange bodily response, remember that our bodily response to an infection is often fever, to kill off the infection which can’t survive at such high temperatures (but neither can we, so it becomes a game of chicken with our life on the line), so sometimes our body does kill us with one thing while trying to save us from another.
- Coarctation of the aorta: this congenital heart defect results in narrowing of the aorta, leading to hypertension, especially in the upper body.
- Pregnancy: pregnancy can either induce or worsen existing hypertension.
- Obesity: excess weight increases blood flow and pressure on arteries, raising the risk of hypertension and associated conditions, e.g. diabetes etc.
- Drugs: certain medications and recreational drugs (including, counterintuitively, alcohol!) can elevate blood pressure.
For more information on each of these, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Hypertension: Factors Far More Relevant Than Salt
Take care!
Share This Post
-
Built from Broken – by Scott Hogan, CPT, COES
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.
So many exercise programs come with the caveat “consult your doctor before engaging in any new activity”, and the safe-but-simple “do not try to train through an injury”.
Which is all very well and good for someone in fabulous health who sprained an ankle while running and can just wait a bit, but what about those of us carrying…
- long-term injuries
- recurring injuries
- or just plain unfixable physical disabilities?
That’s where physiotherapist Scott Hogan comes in. The subtitle line goes:
❝A Science-Based Guide to Healing Painful Joints, Preventing Injuries, and Rebuilding Your Body❞
…but he does also recognize that there are some things that won’t bounce back.
On the other hand… There are a lot of things that get written off by doctors as “here’s some ibuprofen” that, with consistent mindful training, could actually be fixed.
Hogan delivers again and again in this latter category! You’ll see on Amazon that the book has thousands of 4- and 5-star ratings and many glowing reviews, and it’s for a reason or three:
- The book first lays a foundational knowledge of the most common injuries likely to impede us from training
- It goes on to give step-by-step corrective exercises to guide your body through healing itself. Your body is trying to heal itself anyway; you might as well help it accomplish that!
- It finishes up with a comprehensive (and essential) guide to train for the strength and mobility that will help you avoid future problems.
In short: a potentially life-changing book if you have some (likely back- or joint-related) problem that needs overcoming!
And if you don’t? An excellent pre-emptive guide all the same. This is definitely one of those “an ounce of prevention is better than a pound of cure” things.
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:
-
Yes, we still need chickenpox vaccines
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.
For people who grew up before a vaccine was available, chickenpox is largely remembered as an unpleasant experience that almost every child suffered through. The highly contagious disease tore through communities, leaving behind more than a few lasting scars.
For many children, chickenpox was much more than a week or two of itchy discomfort. It was a serious and sometimes life-threatening infection.
Prior to the chickenpox vaccine’s introduction in 1995, 90 percent of children got chickenpox. Those children grew into adults with an increased risk of developing shingles, a disease caused by the same virus—varicella-zoster—as chickenpox, which lies dormant in the body for decades.
The vaccine changed all that, nearly wiping out chickenpox in the U.S. in under three decades. The vaccine has been so successful that some people falsely believe the disease no longer exists and that vaccination is unnecessary. This couldn’t be further from the truth.
Vaccination spares children and adults from the misery of chickenpox and the serious short- and long-term risks associated with the disease. The CDC estimates that 93 percent of children in the U.S. are fully vaccinated against chickenpox. However, outbreaks can still occur among unvaccinated and under-vaccinated populations.
Here are some of the many reasons why we still need chickenpox vaccines.
Chickenpox is more serious than you may remember
For most children, chickenpox lasts around a week. Symptoms vary in severity but typically include a rash of small, itchy blisters that scab over, fever, fatigue, and headache.
However, in one out of every 4,000 chickenpox cases, the virus infects the brain, causing swelling. If the varicella-zoster virus makes it to the part of the brain that controls balance and muscle movements, it can cause a temporary loss of muscle control in the limbs that can last for months. Chickenpox can also cause other serious complications, including skin, lung, and blood infections.
Prior to the U.S.’ approval of the vaccine in 1995, children accounted for most of the country’s chickenpox cases, with over 10,000 U.S. children hospitalized with chickenpox each year.
The chickenpox vaccine is very effective and safe
Chickenpox is an extremely contagious disease. People without immunity have a 90 percent chance of contracting the virus if exposed.
Fortunately, the chickenpox vaccine provides lifetime protection and is around 90 percent effective against infection and nearly 100 percent effective against severe illness. It also reduces the risk of developing shingles later in life.
In addition to being incredibly effective, the chickenpox vaccine is very safe, and serious side effects are extremely rare. Some people may experience mild side effects after vaccination, such as pain at the injection site and a low fever.
Although infection provides immunity against future chickenpox infections, letting children catch chickenpox to build up immunity is never worth the risk, especially when a safe vaccine is available. The purpose of vaccination is to gain immunity without serious risk.
The chickenpox vaccine is one of the greatest vaccine success stories in history
It’s difficult to overstate the impact of the chickenpox vaccine. Within five years of the U.S. beginning universal vaccination against chickenpox, the disease had declined by over 80 percent in some regions.
Nearly 30 years after the introduction of the chickenpox vaccine, the disease is almost completely wiped out. Cases and hospitalizations have plummeted by 97 percent, and chickenpox deaths among people under 20 are essentially nonexistent.
Thanks to the vaccine, in less than a generation, a disease that once swept through schools and affected nearly every child has been nearly eliminated. And, unlike vaccines introduced in the early 20th century, no one can argue that improved hygiene, sanitation, and health helped reduce chickenpox cases beginning in the 1990s.
Having chickenpox as a child puts you at risk of shingles later
Although most people recover from chickenpox within a week or two, the virus that causes the disease, varicella-zoster, remains dormant in the body. This latent virus can reactivate years after the original infection as shingles, a tingling or burning rash that can cause severe pain and nerve damage.
One in 10 people who have chickenpox will develop shingles later in life. The risk increases as people get older as well as for those with weakened immune systems.
Getting chickenpox as an adult can be deadly
Although chickenpox is generally considered a childhood disease, it can affect unvaccinated people of any age. In fact, adult chickenpox is far deadlier than pediatric cases.
Serious complications like pneumonia and brain swelling are more common in adults than in children with chickenpox. One in 400 adults who get chickenpox develops pneumonia, and one to two out of 1,000 develop brain swelling.
Vaccines have virtually eliminated chickenpox, but outbreaks still happen
Although the chickenpox vaccine has dramatically reduced the impact of a once widespread disease, declining immunity could lead to future outbreaks. A Centers for Disease Control and Prevention analysis found that chickenpox vaccination rates dropped in half of U.S. states in the 2022-2023 school year compared to the previous year. And more than a dozen states have immunization rates below 90 percent.
In 2024, New York City and Florida had chickenpox outbreaks that primarily affected unvaccinated and under-vaccinated children. With declining public confidence in routine vaccines and rising school vaccine exemption rates, these types of outbreaks will likely become more common.
The CDC recommends that children receive two chickenpox vaccine doses before age 6. Older children and adults who are unvaccinated and have never had chickenpox should also receive two doses of the vaccine.
For more information, talk to your health care provider.
This article first appeared on Public Good News and is republished here under a Creative Commons license.
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:
-
The Unchaste Berry
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.
A Chasteberry, By Any Other Name…
Vitex agnus castus, literally “chaste lamb vine”, hence its modern common English name “chasteberry”, gets its name from its traditional use as an anaphrodisiac for monks (indeed, it’s also called “monk’s pepper”), which traditional use is not in the slightest backed up by modern science.
Nor is its second most popular traditional use (the increase in production of milk) well-supported by science either:
❝Its traditional use as a galactagogue (i.e., a substance that enhances breast milk production) is not well supported in the literature and should be discouraged. There are no clinical data to support the use of chasteberry for reducing sexual desire, which has been a traditional application❞
Source: American Family Physician | Chasteberry
Both of those supposed effects of the chasteberry go against the fact that it has a prolactin-lowering effect:
❝It appears that [chasteberry] may represent a potentially useful and safe phytotherapic option for the management of selected patients with mild hyperprolactinaemia who wish to be treated with phytotherapy.❞
Source: Vitex agnus castus effects on hyperprolactinaemia
Prolactin, by the way, is the hormone that (as the name suggests) stimulates milk production, and also reduces sexual desire (and motivation in general)
- In most women, it spikes during breastfeeding
- In most men, it spikes after orgasm
- In both, it can promote anhedonic depression, as it antagonizes dopamine
In other words, the actual pharmacological effect of chasteberry, when it comes to prolactin, is the opposite of what we would expect from its traditional use.
Ok, so it’s an unchaste berry after all…. Does it have any other claims to examine?
Yes! It genuinely does help relieve PMS, for those who have it, and reduce menopause symptoms, for those who have those, for example:
❝Dry extract of agnus castus fruit is an effective and well tolerated treatment for the relief of symptoms of the premenstrual syndrome.❞
❝That [Vitex agnus castus] trial indicated strong symptomatic relief of common menopausal symptoms❞
Source: Vitex agnus castus essential oil and menopausal balance: a research update
Is it safe?
Generally speaking, yes. It has been described as “well-tolerated” in the studies we mentioned above, which means it has a good safety profile.
However, it may interfere with some antipsychotic medications, certain kinds of hormone replacement therapy, or hormonal birth control.
As ever, speak with your doctor/pharmacist if unsure!
Where can I get some?
We don’t sell it, but here for your convenience is an example product on Amazon
Enjoy!
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:
