How should I take Doxycycline for acne?

When taking Doxycycline for acne, it is generally recommended to take two 50mg capsules once daily with food. As with all oral antibiotics, it’s important to take Doxycycline at the same time every day for the entire duration of the prescription.

In general, you can expect your course to last around 3 to 4 months though this may vary, depending on the severity of your acne. Never increase your Doxycycline dosage without consulting your GP or pharmacist first.

Always try to take the capsules while standing or sitting upright, never lying down, and wash the capsules down with a large glass of water.

If you miss a dose of Doxycycline, be sure to take it as soon as you remember. However, if it’s almost time for your next scheduled dose, it’s better to skip the missed dose and continue with your regular dosing schedule. Do not take extra medicine to make up for the missed dose.

Doxycycline treats acne most effectively when taken exactly as prescribed, and your recovery may take longer if you miss doses. Always contact your pharmacist or doctor if you miss more than one dose.

Always complete the entire course of antibiotics as prescribed, even if your acne goes away. This helps to ensure that all the bacteria have been cleared from your pores, and it prevents the development of antibiotic resistance.

Doxycycline ingredients

Each Doxycycline capsule contains 50mg Doxycycline (as hyclate) as the active ingredient.

Each capsule also contains: gelatin, magnesium stearate, shellac glaze, sodium lauryl sulphate, starch, E104, E127, E131, E171, E172 & propylene glycol.

Sources

Doxycycline: Patient Information Leaflet

Doxycycline side effects

Common side effects (affecting around 1 in 10 people) include:

• Nausea
• Vomiting
• Headaches
• Sun sensitivity

Stop taking your treatment and see your doctor immediately if you experience any of the following symptoms that may indicate an allergic reaction:

• Wheezing/difficulty breathing
• Fever
• Swelling of the face, lips, throat, tongue, hands, or feet
• Increased heart rate
• Low blood pressure
• A rash
• Itching
• Diarrhoea
• Cramps

If you experience severe or persistent side effects, it's important to contact your healthcare provider. For a full list of side effects and information about taking Doxycycline, including interactions with other medication, see the Patient Information Leaflet.

Doxycycline warnings

Before deciding to use Doxycycline, you should consider the following warnings.

Do not take Doxycycline if:

• You have ever had an allergic reaction to any of the ingredients listed below.
• You are in or have passed the fourth month of pregnancy, as it may affect the unborn baby. If you become pregnant whilst taking Doxycycline, consult with your doctor as soon as possible.
• You are currently using any oral retinoids.
• You suffer from achlorhydria (an absence of stomach acid) or have had any surgery on the duodenum (upper part of the gut).

You should always consult with your doctor before beginning a course of Doxycycline if you:

• Have liver disease.
• Are predisposed to candidiasis overgrowth.
• Are currently suffering from an oral or vaginal fungal or yeast infection.
• Are currently suffering from a muscle disease.
• Are currently suffering from colitis.
• Experience any oesophageal ulceration or irritation.
• Expose yourself to strong UV light as sunburn can occur more easily.
• Always speak to your doctor if you are taking or have recently taken any other medication as this may interfere with Doxycycline.

What medications should I avoid when taking Doxycycline?

There are several medications that you should avoid taking while using Doxycycline to treat acne. These include:

• Blood thinners: Doxycycline may increase the risk of bleeding when taken with blood thinning medications such as warfarin (Coumadin) or aspirin.
• Retinoids: Doxycycline may increase the risk of skin irritation when taken with retinoids such as isotretinoin (Accutane).
• Oral contraceptives: Doxycycline can make birth control pills less effective.
• Any medication containing calcium, aluminium, magnesium, or iron, such as antacids.
• Antibiotics containing penicillin

Please refer to the Patient Information Leaflet for a full list of warnings. Always inform your doctor or pharmacist of any medications you are currently taking before starting Doxycycline.

Can I take Doxycycline during pregnancy?

Doxycycline is not typically recommended for use during pregnancy due to concerns that it may affect bone growth. If you are pregnant, your GP may suggest alternative treatment options such as erythromycin or topical acne treatments such as benzoyl peroxide.

Does Doxycycline cause weight gain?

It’s understood that Doxycycline may cause weight gain, particularly with prolonged use. Some research suggests that this may be related to the impact of the antibiotic on gut bacteria, which play a role in weight management. If you have any concerns about this, it’s best to speak to your GP before beginning your treatment.

What happens if I miss a dose of Doxycycline?

If you miss a dose of Doxycycline, take it as soon as you remember. However, if it is close to the time for your next dose, do not take the missed dose. Instead, continue with your regular schedule and take your next dose at the usual time.

Do not take extra medicine to make up for the missed dose. If you miss multiple doses, speak with your pharmacist or GP to determine the best course of action. It's important not to miss doses or stop taking Doxycycline early as this can lead to the development of antibiotic-resistant bacteria.

What happens if I overdose on Doxycycline?

An overdose of Doxycycline can be dangerous and may cause severe side effects. If you suspect an overdose, seek medical help right away. The symptoms of an overdose may include:

• Nausea and vomiting
• Diarrhoea
• Loss of appetite
• Abdominal pain
• Dizziness
• Headache
• Drowsiness
• Blurred vision

In severe cases, an overdose may lead to more serious side effects such as:

• Seizures
• Coma
• Kidney damage
• Liver damage

Overdosing on Doxycycline is not known to be fatal when taken alone. However, an overdose of any medication should be considered a medical emergency and treated immediately.

If you experience any side effects after taking Doxycycline, it is important to seek medical attention immediately.