Could Isotretinoin Shorten Adult Height?

Analyses by treatment timing, cumulative dose, and stunting supported the overall finding, though early-initiation and female subgroup data were limited.

By
Kathryn Wighton
June 4, 2026
6 min

Conexiant

At a Glance

Category	Detail
Condition	Acne treatment with isotretinoin
Key Mechanisms	Potential effects on endochondral ossification via fibroblast growth factors, bone morphogenetic proteins, and sonic hedgehog signaling.
Target Population	Adolescents undergoing treatment for moderate to severe acne.
Care Setting	Military conscription examinations in Denmark.

Key Highlights

No clinically meaningful reductions in adult height associated with isotretinoin treatment.
Adjusted mean height differences were 0.3 cm for both men and women isotretinoin users.
Stunting occurred in 1.5% of isotretinoin users compared to 2.1% in the reference group.
Cumulative isotretinoin exposure showed no dose-response association with adult height.
Findings may reassure clinicians and patients regarding isotretinoin therapy.

Guideline-Based Recommendations

Diagnosis

Consider isotretinoin for moderate to severe acne.

Management

Monitor height in adolescents receiving isotretinoin, though no significant impact on height was found.

Monitoring & Follow-up

Assess for stunting and growth patterns in patients on isotretinoin.

Risks

No evidence of clinically relevant height reduction or stunting associated with isotretinoin.

Patient & Prescribing Data

Adolescents treated for acne, particularly those with moderate to severe cases.

Isotretinoin does not appear to adversely affect adult height.

Clinical Best Practices

Use dispensed prescription data to ensure accurate medication exposure.
Measure height by medical staff to strengthen outcome ascertainment.
Consider psychosocial factors when discussing isotretinoin treatment with patients.