ThickTails is suitable for all women of all races and hair types. ThickTails Hair Growth & Strengthening Food Supplement is not suitable for those under 18, those with an allergy to fish, shellfish, or women who may be pregnant/breastfeeding. Our food supplement is also not suitable for vegans, vegetarian and those on a Kosher diet. It is always advisable to consult with your doctor before taking any food supplement. ThickTails food supplement does not contain dairy, soya, nuts, eggs, gluten, or wheat.