What medicines and supplements should I avoid with isotretinoin?
Before starting isotretinoin, give your prescriber a complete list of everything you take: prescriptions, pharmacy medicines, vitamins, herbal products, gym supplements and skincare. The two clearest combinations to avoid are tetracycline antibiotics and vitamin A supplements. Some acne creams and other medicines also need an individual review. Do not stop an important medicine or start a new product without speaking to your isotretinoin team or a pharmacist. [1–3]
An interaction can increase side effects even when each product is safe on its own. Brand names can conceal the same ingredient, and “natural” does not mean interaction-free.
Tetracycline antibiotics: do not overlap without specialist advice
Tetracyclines include doxycycline, lymecycline and minocycline. They are commonly used for acne, so it is easy for an old course and a new isotretinoin plan to cross over.
UK product information says tetracyclines should not be taken with isotretinoin. The combination has been linked with benign intracranial hypertension: raised pressure around the brain. Arrange urgent medical advice if you develop a severe or persistent headache with nausea, vomiting or changes in vision. Do not restart either medicine until a clinician has reviewed you. [3,4]
There is no safe universal “gap” to copy from somebody else. Tell the isotretinoin prescriber exactly which antibiotic you took, the dose and the date of your last capsule. They can decide when a change is appropriate.
Vitamin A: check multivitamins and oils, not just the front label
Isotretinoin is related to vitamin A. Taking additional vitamin A can increase the risk of vitamin A toxicity and overlapping side effects. [1–3]
Avoid vitamin A supplements during treatment unless your specialist has given a specific reason and plan. Check the ingredients of:
multivitamins;
“skin, hair and nails” supplements;
retinol or retinyl-containing products; and
fish-liver oils, which may contain vitamin A.
Products change, so ask a pharmacist to check the packet. Do not restrict ordinary foods simply because they contain vitamin A unless your clinical team advises it.
Other acne treatments may make irritation worse
Isotretinoin commonly causes dryness and skin sensitivity. The UK product information advises avoiding topical keratolytic or exfoliating anti-acne products because irritation can increase. Depending on your skin and plan, this may include topical retinoids, exfoliating acids, abrasive scrubs or other strong acne products.
Do not assume every cream must be stopped. Your clinician may keep, pause or later reintroduce one. Until advised, use a gentle cleanser, non-comedogenic moisturiser and broad-spectrum sunscreen, and avoid adding new “active” products. [2,3]
Medicines that affect the liver or bleeding need review
Isotretinoin can affect liver enzymes and blood fats, which is why the prescriber reviews medical history and arranges monitoring. Some other medicines need extra care rather than an automatic ban.
NHS Specialist Pharmacy Service advice says isotretinoin and methotrexate can both increase liver-toxicity risk; the dermatology specialist should advise on their use together. NHS patient guidance also asks people using anticoagulants such as enoxaparin or dalteparin to tell their doctor. [1,5]
This is not a complete interaction list. A safe decision depends on the medicine, dose, indication, blood results and your health. Never stop anticoagulation, methotrexate or another prescribed treatment by yourself.
What about herbal, beauty and gym supplements?
Evidence for many supplements is limited, and blends may contain multiple ingredients. Bring a photo of the front and full ingredient panel for protein powders, pre-workout mixtures, herbal remedies and beauty supplements. Mention products bought abroad or online as well as those from a pharmacy.
Your clinician may recommend stopping a non-essential product if its ingredients are uncertain, it contains vitamin A or it could complicate monitoring. Never share isotretinoin or take leftover capsules.
Starting a new medicine during isotretinoin treatment
If a GP, dentist, pharmacist or urgent-care clinician suggests a new medicine:
Tell them you are taking oral isotretinoin.
Give the dose and the name of your prescribing clinic.
Ask them to check prescribed, over-the-counter and topical products.
Tell your isotretinoin team about the change, especially before the next prescription or blood test.
Seek prompt advice for a severe headache, visual disturbance, marked mood change, suspected pregnancy or another worrying new symptom.
Pregnancy prevention remains essential. Isotretinoin must not be used during pregnancy. If you can become pregnant, follow your agreed Pregnancy Prevention Programme and contact the clinical team promptly if contraception changes, fails or pregnancy is suspected.
Why a full acne assessment comes first
In the UK, isotretinoin is reserved for severe acne, or acne at risk of permanent scarring, when appropriate standard treatments have not worked. Current MHRA safeguards require a lead prescriber with systemic-retinoid expertise and monitoring of mental health, sexual function and other adverse effects. The initial assessment should be in person; later follow-up may be remote when clinically appropriate. [6,7]
The medication review is therefore part of deciding whether isotretinoin is suitable—not paperwork after a treatment decision. Alternatives may be safer or more appropriate, and an assessment does not guarantee a prescription.
Frequently asked questions
Can I take paracetamol with isotretinoin?
The right pain relief depends on liver health, other medicines and frequency. Ask a pharmacist or prescriber, particularly for repeated doses or a new severe headache.
Can I take a multivitamin?
Only after checking that it does not contain vitamin A and confirming it with your pharmacist or isotretinoin team. “Skin” supplements are not automatically safe.
Can I continue benzoyl peroxide or a retinoid cream?
Not unless your treatment plan says so. Some topical acne treatments may cause excessive irritation when combined with isotretinoin, while an individual clinician may occasionally recommend a tailored regimen.
What should I bring to an acne consultation?
Bring an up-to-date medicines list, supplement packets or photographs, allergies, previous acne treatments and relevant test results. Include recently finished antibiotics and contraception where applicable.
Taking the next step
If acne is painful, scarring, persistent or affecting your wellbeing, a structured assessment can clarify the diagnosis, review treatments already tried and identify safe next options. mySkinDoc offers a remote skin consultation for suitable concerns. If isotretinoin may be relevant, further in-person assessment and the current UK safeguards are still required. Start an acne assessment or read what to expect from isotretinoin blood tests and the first appointment.
References
NHS. Taking isotretinoin capsules with other medicines and herbal supplements. Accessed 27 October 2026.
British Association of Dermatologists. Isotretinoin patient information leaflet. Accessed 27 October 2026.
electronic Medicines Compendium. Isotretinoin 20 mg capsules: Summary of Product Characteristics. Accessed 27 October 2026.
electronic Medicines Compendium. Doxycycline 100 mg capsules: Summary of Product Characteristics. Accessed 27 October 2026.
NHS Specialist Pharmacy Service. Managing interactions with methotrexate. Accessed 27 October 2026.
MHRA. Isotretinoin: changes to prescribing guidance and additional risk-minimisation measures. Updated 22 January 2026; accessed 27 October 2026.
NICE. Acne vulgaris: management (NG198). Accessed 27 October 2026.
This article is general information and does not replace individual medical advice.
