Because no information is available on the use of oral triamcinolone during breastfeeding, an alternate drug may be preferred, especially while nursing a newborn or preterm infant. Use of triamcinolone as a nasal spray or local injections, such as for tendinitis, would not be expected to cause any adverse effects in breastfed infants. Expert opinion considers inhaled and oral corticosteroids acceptable to use during breastfeeding.[1,2] Local injections, such as for tendinitis, would not be expected to cause any adverse effects in breastfed infants. Single injections of triamcinolone acetonide into the breast for treating granulomatous mastitis appear to be acceptable. Medium to large doses of corticosteroids given systemically or injected into joints or the breast have been reported to cause temporary reduction of lactation. See also Triamcinolone, Topical.