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Sinecatechins topical Side Effects

For the Consumer

Applies to sinecatechins topical: topical application ointment

Along with its needed effects, sinecatechins topical may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking sinecatechins topical:

More common
  • Blistering, peeling, or loosening of the skin
  • breakdown of skin
  • burning of skin
  • cracking of skin
  • flushing, redness of skin
  • hardening or thickening of skin
  • irritation of skin
  • itching skin
  • pain or discomfort in skin
  • swelling of skin
  • unusually warm skin
Less common
  • Bleeding of skin
  • blood in urine
  • break in the skin, especially associated with blue-black discoloration, swelling, or drainage of fluid
  • burning or itching around anus
  • changes in skin coloring
  • discharge from skin
  • dryness of skin
  • increased frequency of urination
  • increased sensitivity to pain
  • increased sensitivity to touch
  • pain or burning during urination
  • peeling of one area of skin
  • pelvic pain
  • problems with foreskin of penis
  • rash with flat lesions or small raised lesions on the skin
  • scarring of skin
  • skin rash, encrusted, scaly and oozing
  • skin rash on the face
  • swollen, painful, or tender lymph glands in neck, armpit, or groin
  • tingling in the hands and feet

For Healthcare Professionals

Applies to sinecatechins topical: topical ointment


The most frequently reported side effects were local skin and application site reactions, including erythema, pruritus, burning, pain/discomfort, erosion/ulceration, edema, induration, and vesicular rash.

During clinical trials, 5% of patients experienced local adverse events that led to dose reduction, dose interruption, or discontinuation of this drug. These events included application site reactions (local pain, erythema, vesicles, skin erosion/ulceration), phimosis, inguinal lymphadenitis, urethral meatal stenosis, dysuria, genital herpes simplex, vulvitis, hypersensitivity, pruritus, pyodermitis, skin ulcer, erosions in the urethral meatus, and superinfection of warts and ulcers.[Ref]


Very common (10% or more): Burning (67%), pain/discomfort (56%), erosion/ulceration (49%), induration (35%)
Common (1% to 10%): Discharge, bleeding, localized reaction, scar, irritation
Uncommon (0.1% to 1%): Localized inflammation
Frequency not reported: Vesicles, necrosis, papules, discoloration, eczema, pigmentation changes, dryness[Ref]


Very common (10% or more): Erythema (70%), pruritus (69%), vesicular rash (20%)
Common (1% to 10%): Desquamation, rash
Frequency not reported: Pyodermitis, cutaneous facial rash[Ref]


Very common (10% or more): Edema (45%)
Frequency not reported: Genital herpes simplex, superinfection of warts and ulcers, perianal infection[Ref]


Common (1% to 10%): Regional/inguinal lymphadenitis
Frequency not reported: Staphylococcemia[Ref]


Common (1% to 10%): Phimosis
Frequency not reported: Dysuria, vulvitis, cervical dysplasia, pelvic pain[Ref]


Common (1% to 10%): Type IV hypersensitivity
Frequency not reported: Hypersensitivity[Ref]

Nervous system

Frequency not reported: Hyperesthesia[Ref]


Frequency not reported: Urethral meatal stenosis, erosions in urethral meatus, urethritis[Ref]


1. "Product Information. Veregen (sinecatechins topical)." Fougera, Melville, NY.

Some side effects of sinecatechins topical may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

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