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Doctor insights on: Natural Anti Histamines

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Whats the best cure for allergic rhinitis? Aside from anti histamines that really makes me drowsy. Is there any natural way? Something like herbal?

Whats the best cure for allergic rhinitis? Aside from anti histamines that really makes me drowsy. Is there any natural way? Something like herbal?

Avoid allergen: If you can find out what you are allergic to (e.g. Animals, dust, grass) you can try to avoid and take local control measures. If not, you might try saline irrigations and then follow by an over the counter trial of local steroids such as flonase. Side effects can include nasal bleeding and dryness. Best to find out the allergies and see if there are specific treatments. ...Read more

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Histamine (Definition)

Histamine is an organic nitrogen compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter. Histamine triggers the inflammatory response. As part of an immune response to foreign pathogens, histamine is produced by basophils and by mast cells found ...Read more


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How many anti histamines can you take daily?

How many anti histamines can you take daily?

Diphenhydramine: 300 mg/day from all sources, 50 mg in one dose q 6 hours, it is the most widely used OTC. Other OTC 2nd generation antihistamines as cetirizine , loratadine or fexofenadine have different dosing but can be taken once a day, and develop tolerance as with diphenhydramine with prolonged usage ...Read more

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What are the common effective anti-histamines?

What are the common effective anti-histamines?

Anti-histamines: They can be h1-receptor antagonists such as Benadryl (diphenhydramine) or periactin or loratadine. Or, h2-receptor antagonists such as tagamet or ranitidine. Or, h3/h4 receptor antagonists (experimental) such as thioperamide. Or, atypical antihistamines such as catechin. Or, others such as cromolyn. ...Read more

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What dosage does someone overdose on anti-histamines?

What dosage does someone overdose on anti-histamines?

Depending: ...On the antihistamine in Question, do not use more than the recommended doses on the package unless instructed by your physician ...Read more

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If I'm super itchy, will anti-histamines work?

If I'm super itchy, will anti-histamines work?

Depends: Most itchy skin rash are not mediated by histamine and thus whether it would respond to histamine or not would depend on the mechanism causing it. There is no harm in trying antihistamine even up to 4x the usual dose. The sedating ones tend to work better on itching due to sedating effect. Consult your doctor if antihistamine does not work. ...Read more

Dr. John Chiu Dr. Chiu
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Can you tell me how anti-histamines make people drowsy ?

Dr. John Chiu Dr. Chiu
6 doctors agreed:
Can you tell me how anti-histamines make people drowsy ?

Yes: Histamine's action on the brain's histamine receptors keeps you alert. When the antihistamine enters the brain , it counteracts this stimulatory effect thereby making you drowsy. Since the 2nd generation antihistamines do not enter the brain , they are not expected to cause drowsiness. ...Read more

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Is it dangerous to take anti-histamines for too long?

Is it dangerous to take anti-histamines for too long?

No: Antihistamines are safer medications, especially the newer ones, you can take it as long as needed. Generally they are safe. ...Read more

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How well do anti-histamines typically work at treating allergies?

How well do anti-histamines typically work at treating allergies?

Good for mild allerg: Antihistamines work pretty well for mild, intermittent allergies, or as a second medication in patients with more severe disease. For persistent symptoms that require daily medications, then nasal steroid sprays are superior. ...Read more

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Could taking anti-histamines cause vaginal dryness? Can this condition be treated

Could taking anti-histamines cause vaginal dryness? Can this condition be treated

Yes, it can. : Antihistamines can cause mucosal dryness including vaginal dryness. You can half your current dose of antihistamine to see if it continues to give you the anti-histamine benefit without giving you the side effect since the effect is dose dependant. ...Read more

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I'm on a drug except anti-histamines. I can never take those or any type of sulfa drug. so any suggestions?

If you let us: know what the condition is - we may be able to make some suggestions. Please clarify and re-ask question. ...Read more

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If you combined h1 and h2 anti-histamines, could this prevent anaphylaxis?

If you combined h1 and h2 anti-histamines, could this prevent anaphylaxis?

Not necessarily: H1 and h2 antihistamines are used for the treatment of anaphylaxis in addition to Epinephrine and steroids. Preventing anaphylaxis is challenging--best way is to avoid the trigger. In those cases where no trigger is found and anaphylaxis is occurring frequently, Prednisone (steroids) will be used on a daily basis. This carries a high risk of side effects however. ...Read more

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Why does histamine cause bronchoconstriction and is that why we are told to take antihistamine?

No: Histamine is a potent bronchoconstrictor. However anti histamines are not very effective at relieving bronchoconstriction they are mainly used for relief of itchiness and hives. ...Read more

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Can someone be allergic to anti-histamines and what else can you take if an allergic reaction occurs?

Can someone be allergic to anti-histamines and what else can you take if an allergic reaction occurs?

Occasionally yes: but not to all antihistamines, often times the allergy is to an inactive ingredient in the drug, but true allergy to antihistamines is there, rare though, if need be you can try 2nd or third generation antihitamine under your doctor's supervision, goo luck ...Read more

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I'm allergic to animal fur. Is there anything that I can do to get around this without anti histamines?

I'm allergic to animal fur. Is there anything that I can do to get around this without anti histamines?

Yes: First rule in allergy is avoidance of allergen or triggering substance. If it is unavoidable then try medications such as oral antihistamines or topical nasal steroids. If you do not want to take medications or receive a sub-optimal response from their use, you can always opt for immunotherapy (allergy shots). ...Read more

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Are anti-histamines considered anti-cholinergics? What about ventolin for asthma, is that anti-cholinergic?

Are anti-histamines considered anti-cholinergics? What about ventolin for asthma, is that anti-cholinergic?

Neither are, really.: Ventolin is albuterol...A sympathetic nervous system stimulant that causes airways to dilate. Anti-histamines are not anticholinergic, per se, but in high doses or in the elderly they can cause some of the same neurological symptoms as anticholinergics. Most newer antihistamines are not a problem though, because they penetrate the brain less well - which is why they don't make you drowsy. ...Read more

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How can I get rid of urticaria without anti-histamines?

How can I get rid of urticaria without anti-histamines?

Urticaria: difficult situation if u don't want to use anti histamines. can take prednisone- takes time to work- few hours . also could try pinetarsol oil for symptomatic relief but does not do anything to stop the histamine release. see your doctor if concerns. anti histamines should be used if possible. ...Read more

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Will any generic anti histamines work for treating a minor case of cholinergic urticaria?

Will any generic anti histamines work for treating a minor case of cholinergic urticaria?

Yes: Cholinergic urticaria is hives that occur after an increase in body temperature usually related to exercise. Any antihistamine should improve the hives. The newer generation antihistamines are as effective as older one and have less side effects. ...Read more

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Dr. Paul Carter
630 doctors shared insights

Antihistamine (Definition)

Sedating and non-sedating antihistamines prevent and treat allergic reactions, and are ...Read more