Skip to product information
1 of 8

SDA LABORATORIES Diphenhydramine 50mg Allergy Relief, 1000 Capsules

SDA LABORATORIES Diphenhydramine 50mg Allergy Relief, 1000 Capsules

Regular price £42.86 GBP
Sale price £42.86 GBP Regular price
Save % Sold out

HOT PRODUCT | LOW STOCK

Carefully selected from trusted wellness brands

Free worldwide delivery

Secure checkout

Buy More Save More!

SDA LABORATORIES Diphenhydramine 50mg Allergy Relief, 1000 Capsules

Regular price £42.86
Sale price £42.86 Regular price
Save % Sold out
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Tracked worldwide delivery. Estimated arrival between - and -.

Key Advantages of This 1000-Capsule Allergy Medicine

  • Fast-Acting Relief: The 50mg dose works rapidly to block histamine, offering quick relief from sneezing, runny nose, and itchy eyes. Many users notice improvement within 15–30 minutes.
  • Long-Lasting Supply: With 1000 capsules in one bottle, you get a cost-effective solution that lasts for months, even with multiple users in the household. No frequent repurchg needed.
  • Versatile Uses: Effective against seasonal and perennial allergies, including pollen, pet dander, dust mites, and mould. Suitable for indoor and outdoor environments year-round.
  • Easy to Take: Capsules are small and easy to swallow, making them convenient for daily or as-needed uses. No special preparation required.
  • Night-Time Allergies: The sedating effect of diphenhydramine can improve sleep quality if allergies interrupt rest. This dual benefit is ideal for those who struggle with night-time symptoms.

How Does Diphenhydramine Work for Allergy Symptoms?

Diphenhydramine belongs to a class of medications called first-generation antihistamines. It works by competitively inhibiting histamine at H1 receptor sites, effectively reducing the severity of allergy symptoms. When you encounter an allergen, your immune system releases histamine, leading to sneezing, runny nose, itchy eyes, and other discomforts. By blocking histamine, diphenhydramine helps calm these reactions. The 50mg dose provides a strong yet safe level of relief for most adults. Because it crosses the blood-brain barrier, it can cause drowsiness, which is why it is often used for night-time symptom relief.

What Is SDA LABORATORIES Diphenhydramine 50mg Allergy Relief?

Diphenhydramine 50mg Allergy Relief is a fast-acting antihistamine designed to temporarily relieve symptoms associated with hay fever and other upper respiratory allergies. Each capsule contains 50mg of diphenhydramine hydrochloride, a trusted antihistamine that works by blocking histamine—a substance your body releases during an allergic reaction. This product is ideal for both indoor and outdoor allergies, targeting triggers like pollen, pet dander, dust mites, and mould. With 1000 capsules per bottle, it offers a convenient, long-lasting supply for regular allergy management.

How to Uses Diphenhydramine 50mg Capsules

Adults and children aged 12 years and over should take one capsule (50mg) every 4 to 6 hours as needed. Do not exceed 6 capsules (300mg) in 24 hours. For children under 12, consult a health care provider. Uses the smallest effective dose for the shortest duration necessary. Always read and follow the label directions. If symptoms persist beyond 7 days, discontinue uses and consult a doctor. Do not take with other products containing diphenhydramine, including topical preparations.

Frequently Asked Questions About Diphenhydramine Allergy Relief

Can I take diphenhydramine every day?

Diphenhydramine is intended for temporary relief. If you need daily allergy control, a non-sedating antihistamine may be more appropriate. Consult your doctor for long-term management.

Does this product cause drowsiness?

Yes, diphenhydramine is known to cause drowsiness. It is often taken at bedtime for this reason. Avoid activities requiring alertness until you know your response.

How long does it take to work?

Diphenhydramine typically begins to work within 15–30 minutes, with peak effects around 1–2 hours after ingestion.

Can I take this with other allergy medications?

Do not combine with other products containing diphenhydramine or other antihistamines. Consult a health care provider before combining with any medication.

Potential Side Effects and Precautions

Diphenhydramine may cause marked drowsiness, dizziness, blurred vision, dry mouth, or constipation. Avoid driving or operating heavy machinery until you know how this medication affects you. Alcohol and other centre nervous system depressants can worsen these effects. Do not take if you have glaucoma, an enlarged prostate, or breathing problems such as asthma. If you are pregnant, nursing, or taking any medications, consult your health care provider before uses. In case of overdose, seek medical attention immediately. Keep out of reach of children.

Worldwide Delivery

Orders are prepared with clear worldwide delivery expectations from the product page through dispatch. Delivery estimates are shown before checkout where available, and tracking details are sent after the order leaves fulfilment so customers can follow the parcel and plan around the expected arrival window.

Returns and support

UK Vitality Vitamins offers straightforward post-purchase support with a clear returns process. Please check the store returns policy before sending an item back, as final eligibility may depend on product condition, packaging integrity and whether the return request is started within the stated return window.

How to choose

Use the product description, ingredient list, serving information and available variants to compare supplement options. Always check the full ingredient list, directions for use and any allergen information on the product packaging before taking any food supplement.

Ingredients and important information

Ingredient lists and formulations may vary by batch or supplier. Always check the product packaging for the most up-to-date information. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Do not exceed the recommended daily intake. If you are pregnant, nursing, taking medication or have a medical condition, consult your healthcare professional before use.

View full details
  • Tracked worldwide delivery

    Clear delivery messaging for shoppers worldwide.

  • Secure checkout

    Secure checkout.

  • Clear returns

    Returns information is written plainly before purchase.

  • Trusted brands

    Carefully selected supplements from established wellness brands.

Supplement guide

SDA LABORATORIES Diphenhydramine 50mg Allergy Relief, 1000 Capsules at UK Vitality Vitamins

Key Advantages of This 1000-Capsule Allergy Medicine Fast-Acting Relief: The 50mg dose works rapidly to block histamine, offering quick relief from sneezing, runny nose, and itchy eyes. Many users notice improvement ...

Category Allergy Medicine
Delivery area Worldwide
Checkout Secure checkout
Brand SDA LABORATORIES
Price £42.86
Availability In stock
1000 count50mgallergy reliefantihistaminediphenhydraminedust mitesfast-actinghayfeverindoor allergiesnight-time allergy

How to choose if this supplement fits your routine

Read the ingredient list, check the serving size and directions for use. Consider the supplement form (tablet, capsule, liquid) and whether it suits your dietary requirements. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

What UK Vitality Vitamins shows before checkout

Every product page displays price, availability, variant choices, ingredient information, directions for use, allergen details, worldwide delivery expectations and secure checkout — so you can make an informed decision quickly.

Questions about SDA LABORATORIES Diphenhydramine 50mg Allergy Relief, 1000 Capsules

Is SDA LABORATORIES Diphenhydramine 50mg Allergy Relief, 1000 Capsules available with worldwide delivery?

Yes. This product is currently available on UK Vitality Vitamins with free worldwide delivery.

How should I compare this with similar supplements?

Compare the active ingredients, serving size, number of servings per container, supplement form, brand reputation and price per serving. Check allergen information if relevant to your dietary needs.

Where can I find delivery and returns information?

Delivery information is shown near the add to basket area. Returns guidance is available on the product page and full terms are covered in the store returns policy.

Supplement shopping with clarity

UK Vitality Vitamins product pages display ingredients, directions, allergen details and delivery information clearly — so you can compare supplements and make informed choices quickly.