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Mothers are understandably concerned about protecting the well-being of their offspring in every way possible, including providing oral dietary supplements (DSs). Up to now, there has been limited data on maternal knowledge and attitudes toward concomitant maternal–child DSs practices in Lebanon. This study evaluated the maternal knowledge and attitudes toward DSs and documented the DS-related practices in mothers and their under-5 children with their correlates. This cross-sectional study involved a representative stratified cluster random sample of 511 mother–child dyads (mothers: mean age ± SD = 30.25 ± 4.98 years; children: mean age ± SD = 18.7 ± 15.5 months, girls: 55.0%). A self-administered questionnaire was used to meet study aims. Most mothers lack awareness and hold unfavorable attitudes regarding DS use. Among all mothers, 47% were DS users, with the majority using vitamin D (82%). Almost 64% of mothers provide DSs for their children, with a predominant use of multivitamin drops (61.0%). “To keep the child healthy” was the reported reason by 60.0% of mothers to provide DSs for their children. Physicians were the primary information source about DSs for most mothers (64.0%). The usage of DSs among mothers was influenced by their pregnancy status, child’s age, number of children per household, and their awareness and attitudes towards DSs. DS usage among children was correlated with maternal DS use and their mothers’ attitudes towards DSs. DS usage among Lebanese mother–child dyads is common. Mothers should be the focus of education sessions regarding DS use.

Chronic dietary aluminum (Al) exposure can have various negative effects on health. The aim of our study is to (1) assess the contamination level of Al in infant formulas (n = 41) and baby food products (n = 76) available in the Lebanese market, and to (2) evaluate the margin of exposure of Al through the consumption of these foods among children under the age of five in Lebanon. Flame atomic absorption spectrometry (FAAS) was used to evaluate all of the samples. Al levels in all tested children’s food items were below the limit of detection. The highest Al level was detected in cornflakes (0.361 ± 0.049 mg/kg) and pureed foods (0.362 ± 0.079 mg/kg). Among infants aged 0–23 months, the average Al exposure due to the daily intake of infant formulas and baby foods was 0.01 and 0.0104 mg/kg BW/day for males and females, respectively. Babies aged 8–10 and 3–5 months had the highest and lowest levels of Al exposure, respectively. Additionally, the toxicological contribution of Al exposure determined for several age groups to a provisional tolerated weekly intake (PTWI) set by JECFA was