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Deal.ai › Brands

SDA LABORATORIES Sale Tracker, November 2026

Prices checked Nov 6, 2026, 11:55 PM ET

Is SDA LABORATORIES on sale?

Not right now. SDA LABORATORIES prices are at their usual levels: the Diphenhydramine HCl 50mg Antihistamine Medicine - 1000 Capsules is $29.99 at Amazon. Any SDA LABORATORIES deal shows here as soon as it starts.

SDA Laboratories is a small US maker known for bulk generic diphenhydramine, the antihistamine sold under the Benadryl name. Its 50mg capsules come in 1000-count bottles aimed at clinics, offices and heavy users rather than one-off buyers. Deal.ai checks the price of every SDA product at each store that carries it and keeps a price history for each one.

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SDA LABORATORIES prices today, and how low they've been

  • SDA LABORATORIES
    SDA Diphenhydramine 50mg Caps. SleepAid Antihistamine Gen. Benadryl 1000ct
    SDA Diphenhydramine 50mg Caps. SleepAid Antihistamine Gen. Benadryl 1000ct$25.90 on Nov 7
  • SDA LABORATORIES
    Diphenhydramine HCl 50mg Antihistamine Medicine - 1000 Capsules
    Diphenhydramine HCl 50mg Antihistamine Medicine - 1000 Capsules$29.99 at Amazon
  • SDA LABORATORIES
    SDA Laboratories Inc. Generic Benadryl Allergy - Diphenhydramine 50mg 1000 Capsules
    SDA Laboratories Inc. Generic Benadryl Allergy - Diphenhydramine 50mg 1000 Capsules$25.90 on Nov 7
  • SDA LABORATORIES
    SDA Laboratories Allergy Relief Cetirizine HCL 10mg 100 count Tablets
    SDA Laboratories Allergy Relief Cetirizine HCL 10mg 100 count Tablets$10.00 at Walmart
  • SDA LABORATORIES
    SDA Laboratories Docusate Sodium 100mg, 100 Count Softgel Capsules
    SDA Laboratories Docusate Sodium 100mg, 100 Count Softgel Capsules$9.46 at Walmart
  • SDA LABORATORIES
    Diphenhydramine HCI Capsules USP 50 mg by Sda Laboratories, Antihistamine, 100 Ea, 2 Pack
    Diphenhydramine HCI Capsules USP 50 mg by Sda Laboratories, Antihistamine, 100 Ea, 2 Pack$12.55 at Walmart
  • SDA LABORATORIES
    SDA Laboratories Generic Benadryl Allergy - Diphenhydramine (50mg) - 1000 Capsules
    SDA Laboratories Generic Benadryl Allergy - Diphenhydramine (50mg) - 1000 Capsules$21.95 at eBay
  • SDA LABORATORIES
    SDA Laboratories Diphenhydramine HCl 50mg Capsules (1000 Count)
    SDA Laboratories Diphenhydramine HCl 50mg Capsules (1000 Count)$29.99 at Amazon

    • Questions and answers

    What is SDA Laboratories best known for?
    Bulk diphenhydramine 50mg capsules in 1000-count bottles. The same product is listed under a few names, including SleepAid and Generic Benadryl Allergy.
    Is SDA diphenhydramine the same as Benadryl?
    The active ingredient is diphenhydramine HCl 50mg, the same as Benadryl Allergy. The 50mg dose is stronger than the 25mg found in most retail Benadryl tablets, so check the label before switching.
    Where is SDA diphenhydramine cheapest?
    It varies by store and by the week. The page compares every store's price for the 1000-count bottle and shows each store's price history, so you can see which one is lowest right now.
    Does SDA Laboratories run sales?
    SDA sells through third-party stores rather than its own shop, so discounts come from those retailers. The page lists any live deals and the deepest saving it finds.
    What is the return policy on SDA products?
    Returns are handled by the store you buy from, not by SDA. Check that store's policy before ordering a 1000-count bottle, since opened medicine is often non-returnable.
    Are there SDA LABORATORIES discount codes?
    Deal.ai doesn't list SDA LABORATORIES discount codes. It checks what SDA LABORATORIES products actually cost at every store, so a real markdown shows on this page as a deal as soon as it starts, and each product's page has its price history to tell a sale from its usual price.