Xiidra Burning, Metallic Taste, or Not Working? What to Do Next

If your eye doctor prescribed Xiidra® (lifitegrast 5%) for chronic dry eye, you were likely hoping for fast, effective relief. As one of the most widely prescribed pharmaceutical drops, Xiidra is designed to target surface inflammation.

However, many patients quickly run into significant hurdles: intense eye burning upon application, a lingering metallic taste in the throat, or results that plateau after a few months.

If you are struggling with Xiidra side effects or feel like the drops simply aren’t giving you lasting comfort, you aren't alone. Here is a breakdown of why these side effects happen, why chemical drops often hit a wall, and how biological PRP and serum eye drops offer a soothing, non-burning alternative.

1. Why Does Xiidra Burn and Cause a Metallic Taste?

Xiidra works by blocking a specific surface protein called LFA-1 (Lymphocyte Function-Associated Antigen-1). By preventing LFA-1 from binding to molecules on your ocular surface, it stops inflammatory T-cells from attacking your eye tissue.

While effective at suppressing inflammation, its active formulation causes two very common, uncomfortable side effects:

Severe Application Burning & Stinging

Unlike natural tears, synthetic pharmaceutical drops use chemical vehicles and specific pH balances to keep the active drug stable. When applied to an already raw, inflamed, or damaged cornea, the chemical formulation of Xiidra triggers immediate nerve sensation—resulting in sharp burning or stinging that can last anywhere from several minutes to an hour.

Dysgeusia (Bad or Metallic Taste)

When you instill an eye drop, a portion of the solution drains through the puncta (the small tear ducts in the inner corner of your eyelids) directly into your nasolacrimal canal and down the back of your throat. Lifitegrast is rapidly absorbed by these mucous membranes, leading to a persistent bitter, metallic, or unusual taste that many patients find intolerable.

2. What If Xiidra Just Isn't Working?

Beyond the side effects, many patients find that even after weeks or months of consistent use, their symptoms remain largely unchanged. Why does this happen?

As detailed in our prescription dry eye drop comparison guide, pharmaceutical drops like Xiidra, Restasis, and Cequa serve one primary purpose: they act as chemical anti-inflammatories.

While lowering surface inflammation stops further damage, Xiidra contains zero growth factors or cellular healing proteins. If years of chronic dry eye, contact lens wear, or previous surgeries (like LASIK or PRK) have physically damaged your corneal surface or sensory nerves, an anti-inflammatory drop alone cannot rebuild that missing tissue.

3. The Soothing, Non-Burning Alternative: Biological PRP Eye Drops

When your eyes are too sensitive for synthetic chemicals—or when anti-inflammatory drops hit a plateau—the next logical step in advanced dry eye care is Platelet-Rich Plasma (PRP) or Autologous Serum (ASED) eye drops.

Instead of synthetic drugs, biological drops are custom-formulated entirely from a small sample of your own blood. Because they are 100% biocompatible, they match the exact pH, osmolality, and biological makeup of healthy natural tears:

• Zero Chemical Stinging: Because biological drops contain no synthetic drugs, preservatives, or artificial chemicals, they do not burn upon application—even on severely damaged corneas.

• No Metallic Taste: Autologous PRP drops pass naturally through your tear ducts without leaving a chemical residue or unpleasant taste.

• Active Corneal & Nerve Healing: PRP drops are packed with concentrated Epidermal Growth Factor (EGF)and Nerve Growth Factor (NGF)—proteins that actively repair scratched corneal tissue and restore damaged sensory nerves.

4. Get Custom Drops Delivered to Your Door

Transitioning from uncomfortable prescription drops to natural biological care should be simple and stress-free.

At Enrich Advanced Eye Care, we handle every step of the process. Our mobile technicians complete a quick, comfortable blood draw at your home or office across Los Angeles, Orange County, San Francisco, Las Vegas, Phoenix, and Reno. Your custom PRP drops are compounded in our specialized facility and delivered directly to your door.

Stop settling for daily burning and lingering side effects. Talk to your eye care specialist or contact Enrich today to learn if biological PRP and serum drops are right for you.