What are the side effects of using acyclovir?

Acyclovir may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:

  • upset stomach.
  • vomiting.
  • diarrhea.
  • dizziness.
  • tiredness.
  • agitation.
  • pain, especially in the joints.
  • hair loss.

Do side effects from acyclovir go away?

Most side effects of acyclovir that occur usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, if you have an allergic reaction you should notify your healthcare professional immediately.

How long does acyclovir take to work for cold sores?

May take up to three days for symptom reduction; however, acyclovir should be taken until the course prescribed is completed. Acyclovir works best when started within 48 hours of symptom onset.

Are cold sores still contagious after taking acyclovir?

Cold sores are contagious until they go away completely, which usually takes about two weeks. This means the common belief that cold sores aren’t contagious once they’ve scabbed over isn’t true. Keep reading to learn more about how cold sores spread and how you can protect those around you when you have one.

Can acyclovir make you feel sick?

For most infections, you should start to feel better after taking aciclovir for a few days. Common side effects include headaches, dizziness, and feeling or being sick. Wash your hands before and after using the cream.

Why does acyclovir make me tired?

Low red blood cells and platelets: This drug may cause thrombotic thrombocytopenic purpura (TTP) and hemolytic uremic syndrome (HUS). These conditions cause dangerously low levels of red blood cells and platelets in your body. This may be fatal (cause death). Symptoms can include fatigue and low energy.

How long are cold sores contagious after taking acyclovir?

Are cold sores autoimmune?

Key points about pemphigus vulgaris Pemphigus is a rare group of autoimmune diseases. It causes blisters on the skin and mucous membranes throughout the body. It can affect the mouth, nose, throat, eyes, and genitals.